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django/tests/forms_tests/tests/test_forms.py
David Smith c187f5f924 Refs #32819 -- Avoided adding 'aria-describedby' to hidden inputs.
Hidden elements are not visible for both accessibility tools and browsers presentation layer. This change therefore only reduces the size of the generated HTML.
2024-04-30 11:11:02 +02:00

5332 lines
218 KiB
Python

import copy
import datetime
import json
import uuid
from django.core.exceptions import NON_FIELD_ERRORS
from django.core.files.uploadedfile import SimpleUploadedFile
from django.core.validators import MaxValueValidator, RegexValidator
from django.forms import (
BooleanField,
CharField,
CheckboxSelectMultiple,
ChoiceField,
DateField,
DateTimeField,
EmailField,
Field,
FileField,
FileInput,
FloatField,
Form,
HiddenInput,
ImageField,
IntegerField,
MultipleChoiceField,
MultipleHiddenInput,
MultiValueField,
MultiWidget,
NullBooleanField,
PasswordInput,
RadioSelect,
Select,
SplitDateTimeField,
SplitHiddenDateTimeWidget,
Textarea,
TextInput,
TimeField,
ValidationError,
)
from django.forms.renderers import DjangoTemplates, get_default_renderer
from django.forms.utils import ErrorDict, ErrorList
from django.http import QueryDict
from django.template import Context, Template
from django.test import SimpleTestCase
from django.test.utils import override_settings
from django.utils.datastructures import MultiValueDict
from django.utils.safestring import mark_safe
from . import jinja2_tests
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(choices=[("P", "Python"), ("J", "Java")], widget=RadioSelect)
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
class PersonNew(Form):
first_name = CharField(widget=TextInput(attrs={"id": "first_name_id"}))
last_name = CharField()
birthday = DateField()
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[("J", "John Lennon"), ("P", "Paul McCartney")],
widget=CheckboxSelectMultiple,
)
class MultiValueDictLike(dict):
def getlist(self, key):
return [self[key]]
class FormsTestCase(SimpleTestCase):
# A Form is a collection of Fields. It knows how to validate a set of data and it
# knows how to render itself in a couple of default ways (e.g., an HTML table).
# You can pass it data in __init__(), as a dictionary.
def test_form(self):
# Pass a dictionary to a Form's __init__().
p = Person(
{"first_name": "John", "last_name": "Lennon", "birthday": "1940-10-9"}
)
self.assertTrue(p.is_bound)
self.assertEqual(p.errors, {})
self.assertIsInstance(p.errors, dict)
self.assertTrue(p.is_valid())
self.assertHTMLEqual(p.errors.as_ul(), "")
self.assertEqual(p.errors.as_text(), "")
self.assertEqual(p.cleaned_data["first_name"], "John")
self.assertEqual(p.cleaned_data["last_name"], "Lennon")
self.assertEqual(p.cleaned_data["birthday"], datetime.date(1940, 10, 9))
self.assertHTMLEqual(
str(p["first_name"]),
'<input type="text" name="first_name" value="John" id="id_first_name" '
"required>",
)
self.assertHTMLEqual(
str(p["last_name"]),
'<input type="text" name="last_name" value="Lennon" id="id_last_name" '
"required>",
)
self.assertHTMLEqual(
str(p["birthday"]),
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" '
"required>",
)
msg = (
"Key 'nonexistentfield' not found in 'Person'. Choices are: birthday, "
"first_name, last_name."
)
with self.assertRaisesMessage(KeyError, msg):
p["nonexistentfield"]
form_output = []
for boundfield in p:
form_output.append(str(boundfield))
self.assertHTMLEqual(
"\n".join(form_output),
'<input type="text" name="first_name" value="John" id="id_first_name" '
"required>"
'<input type="text" name="last_name" value="Lennon" id="id_last_name" '
"required>"
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" '
"required>",
)
form_output = []
for boundfield in p:
form_output.append([boundfield.label, boundfield.data])
self.assertEqual(
form_output,
[
["First name", "John"],
["Last name", "Lennon"],
["Birthday", "1940-10-9"],
],
)
self.assertHTMLEqual(
str(p),
'<div><label for="id_first_name">First name:</label><input type="text" '
'name="first_name" value="John" required id="id_first_name"></div><div>'
'<label for="id_last_name">Last name:</label><input type="text" '
'name="last_name" value="Lennon" required id="id_last_name"></div><div>'
'<label for="id_birthday">Birthday:</label><input type="text" '
'name="birthday" value="1940-10-9" required id="id_birthday"></div>',
)
self.assertHTMLEqual(
p.as_div(),
'<div><label for="id_first_name">First name:</label><input type="text" '
'name="first_name" value="John" required id="id_first_name"></div><div>'
'<label for="id_last_name">Last name:</label><input type="text" '
'name="last_name" value="Lennon" required id="id_last_name"></div><div>'
'<label for="id_birthday">Birthday:</label><input type="text" '
'name="birthday" value="1940-10-9" required id="id_birthday"></div>',
)
def test_empty_dict(self):
# Empty dictionaries are valid, too.
p = Person({})
self.assertTrue(p.is_bound)
self.assertEqual(p.errors["first_name"], ["This field is required."])
self.assertEqual(p.errors["last_name"], ["This field is required."])
self.assertEqual(p.errors["birthday"], ["This field is required."])
self.assertFalse(p.is_valid())
self.assertEqual(p.cleaned_data, {})
self.assertHTMLEqual(
str(p),
'<div><label for="id_first_name">First name:</label>'
'<ul class="errorlist"><li>This field is required.</li></ul>'
'<input type="text" name="first_name" aria-invalid="true" required '
'id="id_first_name"></div>'
'<div><label for="id_last_name">Last name:</label>'
'<ul class="errorlist"><li>This field is required.</li></ul>'
'<input type="text" name="last_name" aria-invalid="true" required '
'id="id_last_name"></div><div>'
'<label for="id_birthday">Birthday:</label>'
'<ul class="errorlist"><li>This field is required.</li></ul>'
'<input type="text" name="birthday" aria-invalid="true" required '
'id="id_birthday"></div>',
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="first_name" id="id_first_name" aria-invalid="true" required>
</td></tr><tr><th><label for="id_last_name">Last name:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="last_name" id="id_last_name" aria-invalid="true" required>
</td></tr><tr><th><label for="id_birthday">Birthday:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="birthday" id="id_birthday" aria-invalid="true" required>
</td></tr>""",
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
<label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" aria-invalid="true" required>
</li><li><ul class="errorlist"><li>This field is required.</li></ul>
<label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" aria-invalid="true" required>
</li><li><ul class="errorlist"><li>This field is required.</li></ul>
<label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" aria-invalid="true" required>
</li>""",
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist"><li>This field is required.</li></ul>
<p><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" aria-invalid="true" required>
</p><ul class="errorlist"><li>This field is required.</li></ul>
<p><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" aria-invalid="true" required>
</p><ul class="errorlist"><li>This field is required.</li></ul>
<p><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" aria-invalid="true" required>
</p>""",
)
self.assertHTMLEqual(
p.as_div(),
'<div><label for="id_first_name">First name:</label>'
'<ul class="errorlist"><li>This field is required.</li></ul>'
'<input type="text" name="first_name" aria-invalid="true" required '
'id="id_first_name"></div>'
'<div><label for="id_last_name">Last name:</label>'
'<ul class="errorlist"><li>This field is required.</li></ul>'
'<input type="text" name="last_name" aria-invalid="true" required '
'id="id_last_name"></div><div>'
'<label for="id_birthday">Birthday:</label>'
'<ul class="errorlist"><li>This field is required.</li></ul>'
'<input type="text" name="birthday" aria-invalid="true" required '
'id="id_birthday"></div>',
)
def test_empty_querydict_args(self):
data = QueryDict()
files = QueryDict()
p = Person(data, files)
self.assertIs(p.data, data)
self.assertIs(p.files, files)
def test_unbound_form(self):
# If you don't pass any values to the Form's __init__(), or if you pass None,
# the Form will be considered unbound and won't do any validation. Form.errors
# will be an empty dictionary *but* Form.is_valid() will return False.
p = Person()
self.assertFalse(p.is_bound)
self.assertEqual(p.errors, {})
self.assertFalse(p.is_valid())
with self.assertRaises(AttributeError):
p.cleaned_data
self.assertHTMLEqual(
str(p),
'<div><label for="id_first_name">First name:</label><input type="text" '
'name="first_name" id="id_first_name" required></div><div><label '
'for="id_last_name">Last name:</label><input type="text" name="last_name" '
'id="id_last_name" required></div><div><label for="id_birthday">'
'Birthday:</label><input type="text" name="birthday" id="id_birthday" '
"required></div>",
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" id="id_birthday" required></td></tr>""",
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></li>
<li><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></li>
<li><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required></li>""",
)
self.assertHTMLEqual(
p.as_p(),
"""<p><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></p>
<p><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></p>
<p><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required></p>""",
)
self.assertHTMLEqual(
p.as_div(),
'<div><label for="id_first_name">First name:</label><input type="text" '
'name="first_name" id="id_first_name" required></div><div><label '
'for="id_last_name">Last name:</label><input type="text" name="last_name" '
'id="id_last_name" required></div><div><label for="id_birthday">'
'Birthday:</label><input type="text" name="birthday" id="id_birthday" '
"required></div>",
)
def test_unicode_values(self):
# Unicode values are handled properly.
p = Person(
{
"first_name": "John",
"last_name": "\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111",
"birthday": "1940-10-9",
}
)
self.assertHTMLEqual(
p.as_table(),
'<tr><th><label for="id_first_name">First name:</label></th><td>'
'<input type="text" name="first_name" value="John" id="id_first_name" '
"required></td></tr>\n"
'<tr><th><label for="id_last_name">Last name:</label>'
'</th><td><input type="text" name="last_name" '
'value="\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111"'
'id="id_last_name" required></td></tr>\n'
'<tr><th><label for="id_birthday">Birthday:</label></th><td>'
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" '
"required></td></tr>",
)
self.assertHTMLEqual(
p.as_ul(),
'<li><label for="id_first_name">First name:</label> '
'<input type="text" name="first_name" value="John" id="id_first_name" '
"required></li>\n"
'<li><label for="id_last_name">Last name:</label> '
'<input type="text" name="last_name" '
'value="\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111" '
'id="id_last_name" required></li>\n'
'<li><label for="id_birthday">Birthday:</label> '
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" '
"required></li>",
)
self.assertHTMLEqual(
p.as_p(),
'<p><label for="id_first_name">First name:</label> '
'<input type="text" name="first_name" value="John" id="id_first_name" '
"required></p>\n"
'<p><label for="id_last_name">Last name:</label> '
'<input type="text" name="last_name" '
'value="\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111" '
'id="id_last_name" required></p>\n'
'<p><label for="id_birthday">Birthday:</label> '
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" '
"required></p>",
)
self.assertHTMLEqual(
p.as_div(),
'<div><label for="id_first_name">First name:</label>'
'<input type="text" name="first_name" value="John" id="id_first_name" '
'required></div><div><label for="id_last_name">Last name:</label>'
'<input type="text" name="last_name"'
'value="\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111" '
'id="id_last_name" required></div><div><label for="id_birthday">'
'Birthday:</label><input type="text" name="birthday" value="1940-10-9" '
'id="id_birthday" required></div>',
)
p = Person({"last_name": "Lennon"})
self.assertEqual(p.errors["first_name"], ["This field is required."])
self.assertEqual(p.errors["birthday"], ["This field is required."])
self.assertFalse(p.is_valid())
self.assertEqual(
p.errors,
{
"birthday": ["This field is required."],
"first_name": ["This field is required."],
},
)
self.assertEqual(p.cleaned_data, {"last_name": "Lennon"})
self.assertEqual(p["first_name"].errors, ["This field is required."])
self.assertHTMLEqual(
p["first_name"].errors.as_ul(),
'<ul class="errorlist"><li>This field is required.</li></ul>',
)
self.assertEqual(p["first_name"].errors.as_text(), "* This field is required.")
p = Person()
self.assertHTMLEqual(
str(p["first_name"]),
'<input type="text" name="first_name" id="id_first_name" required>',
)
self.assertHTMLEqual(
str(p["last_name"]),
'<input type="text" name="last_name" id="id_last_name" required>',
)
self.assertHTMLEqual(
str(p["birthday"]),
'<input type="text" name="birthday" id="id_birthday" required>',
)
def test_cleaned_data_only_fields(self):
# cleaned_data will always *only* contain a key for fields defined in the
# Form, even if you pass extra data when you define the Form. In this
# example, we pass a bunch of extra fields to the form constructor,
# but cleaned_data contains only the form's fields.
data = {
"first_name": "John",
"last_name": "Lennon",
"birthday": "1940-10-9",
"extra1": "hello",
"extra2": "hello",
}
p = Person(data)
self.assertTrue(p.is_valid())
self.assertEqual(p.cleaned_data["first_name"], "John")
self.assertEqual(p.cleaned_data["last_name"], "Lennon")
self.assertEqual(p.cleaned_data["birthday"], datetime.date(1940, 10, 9))
def test_optional_data(self):
# cleaned_data will include a key and value for *all* fields defined in
# the Form, even if the Form's data didn't include a value for fields
# that are not required. In this example, the data dictionary doesn't
# include a value for the "nick_name" field, but cleaned_data includes
# it. For CharFields, it's set to the empty string.
class OptionalPersonForm(Form):
first_name = CharField()
last_name = CharField()
nick_name = CharField(required=False)
data = {"first_name": "John", "last_name": "Lennon"}
f = OptionalPersonForm(data)
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data["nick_name"], "")
self.assertEqual(f.cleaned_data["first_name"], "John")
self.assertEqual(f.cleaned_data["last_name"], "Lennon")
# For DateFields, it's set to None.
class OptionalPersonForm(Form):
first_name = CharField()
last_name = CharField()
birth_date = DateField(required=False)
data = {"first_name": "John", "last_name": "Lennon"}
f = OptionalPersonForm(data)
self.assertTrue(f.is_valid())
self.assertIsNone(f.cleaned_data["birth_date"])
self.assertEqual(f.cleaned_data["first_name"], "John")
self.assertEqual(f.cleaned_data["last_name"], "Lennon")
def test_auto_id(self):
# "auto_id" tells the Form to add an "id" attribute to each form
# element. If it's a string that contains '%s', Django will use that as
# a format string into which the field's name will be inserted. It will
# also put a <label> around the human-readable labels for a field.
p = Person(auto_id="%s_id")
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="first_name_id">First name:</label></th><td>
<input type="text" name="first_name" id="first_name_id" required></td></tr>
<tr><th><label for="last_name_id">Last name:</label></th><td>
<input type="text" name="last_name" id="last_name_id" required></td></tr>
<tr><th><label for="birthday_id">Birthday:</label></th><td>
<input type="text" name="birthday" id="birthday_id" required></td></tr>""",
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name_id">First name:</label>
<input type="text" name="first_name" id="first_name_id" required></li>
<li><label for="last_name_id">Last name:</label>
<input type="text" name="last_name" id="last_name_id" required></li>
<li><label for="birthday_id">Birthday:</label>
<input type="text" name="birthday" id="birthday_id" required></li>""",
)
self.assertHTMLEqual(
p.as_p(),
"""<p><label for="first_name_id">First name:</label>
<input type="text" name="first_name" id="first_name_id" required></p>
<p><label for="last_name_id">Last name:</label>
<input type="text" name="last_name" id="last_name_id" required></p>
<p><label for="birthday_id">Birthday:</label>
<input type="text" name="birthday" id="birthday_id" required></p>""",
)
self.assertHTMLEqual(
p.as_div(),
'<div><label for="first_name_id">First name:</label><input type="text" '
'name="first_name" id="first_name_id" required></div><div><label '
'for="last_name_id">Last name:</label><input type="text" '
'name="last_name" id="last_name_id" required></div><div><label '
'for="birthday_id">Birthday:</label><input type="text" name="birthday" '
'id="birthday_id" required></div>',
)
def test_auto_id_true(self):
# If auto_id is any True value whose str() does not contain '%s', the "id"
# attribute will be the name of the field.
p = Person(auto_id=True)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name">First name:</label>
<input type="text" name="first_name" id="first_name" required></li>
<li><label for="last_name">Last name:</label>
<input type="text" name="last_name" id="last_name" required></li>
<li><label for="birthday">Birthday:</label>
<input type="text" name="birthday" id="birthday" required></li>""",
)
def test_auto_id_false(self):
# If auto_id is any False value, an "id" attribute won't be output unless it
# was manually entered.
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>""",
)
def test_id_on_field(self):
# In this example, auto_id is False, but the "id" attribute for the "first_name"
# field is given. Also note that field gets a <label>, while the others don't.
p = PersonNew(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name_id">First name:</label>
<input type="text" id="first_name_id" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>""",
)
def test_auto_id_on_form_and_field(self):
# If the "id" attribute is specified in the Form and auto_id is True, the "id"
# attribute in the Form gets precedence.
p = PersonNew(auto_id=True)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name_id">First name:</label>
<input type="text" id="first_name_id" name="first_name" required></li>
<li><label for="last_name">Last name:</label>
<input type="text" name="last_name" id="last_name" required></li>
<li><label for="birthday">Birthday:</label>
<input type="text" name="birthday" id="birthday" required></li>""",
)
def test_various_boolean_values(self):
class SignupForm(Form):
email = EmailField()
get_spam = BooleanField()
f = SignupForm(auto_id=False)
self.assertHTMLEqual(
str(f["email"]),
'<input type="email" name="email" maxlength="320" required>',
)
self.assertHTMLEqual(
str(f["get_spam"]), '<input type="checkbox" name="get_spam" required>'
)
f = SignupForm({"email": "test@example.com", "get_spam": True}, auto_id=False)
self.assertHTMLEqual(
str(f["email"]),
'<input type="email" name="email" maxlength="320" value="test@example.com" '
"required>",
)
self.assertHTMLEqual(
str(f["get_spam"]),
'<input checked type="checkbox" name="get_spam" required>',
)
# 'True' or 'true' should be rendered without a value attribute
f = SignupForm({"email": "test@example.com", "get_spam": "True"}, auto_id=False)
self.assertHTMLEqual(
str(f["get_spam"]),
'<input checked type="checkbox" name="get_spam" required>',
)
f = SignupForm({"email": "test@example.com", "get_spam": "true"}, auto_id=False)
self.assertHTMLEqual(
str(f["get_spam"]),
'<input checked type="checkbox" name="get_spam" required>',
)
# A value of 'False' or 'false' should be rendered unchecked
f = SignupForm(
{"email": "test@example.com", "get_spam": "False"}, auto_id=False
)
self.assertHTMLEqual(
str(f["get_spam"]),
'<input type="checkbox" name="get_spam" aria-invalid="true" required>',
)
f = SignupForm(
{"email": "test@example.com", "get_spam": "false"}, auto_id=False
)
self.assertHTMLEqual(
str(f["get_spam"]),
'<input type="checkbox" name="get_spam" aria-invalid="true" required>',
)
# A value of '0' should be interpreted as a True value (#16820)
f = SignupForm({"email": "test@example.com", "get_spam": "0"})
self.assertTrue(f.is_valid())
self.assertTrue(f.cleaned_data.get("get_spam"))
def test_widget_output(self):
# Any Field can have a Widget class passed to its constructor:
class ContactForm(Form):
subject = CharField()
message = CharField(widget=Textarea)
f = ContactForm(auto_id=False)
self.assertHTMLEqual(
str(f["subject"]), '<input type="text" name="subject" required>'
)
self.assertHTMLEqual(
str(f["message"]),
'<textarea name="message" rows="10" cols="40" required></textarea>',
)
# as_textarea(), as_text() and as_hidden() are shortcuts for changing the output
# widget type:
self.assertHTMLEqual(
f["subject"].as_textarea(),
'<textarea name="subject" rows="10" cols="40" required></textarea>',
)
self.assertHTMLEqual(
f["message"].as_text(), '<input type="text" name="message" required>'
)
self.assertHTMLEqual(
f["message"].as_hidden(), '<input type="hidden" name="message">'
)
# The 'widget' parameter to a Field can also be an instance:
class ContactForm(Form):
subject = CharField()
message = CharField(widget=Textarea(attrs={"rows": 80, "cols": 20}))
f = ContactForm(auto_id=False)
self.assertHTMLEqual(
str(f["message"]),
'<textarea name="message" rows="80" cols="20" required></textarea>',
)
# Instance-level attrs are *not* carried over to as_textarea(), as_text() and
# as_hidden():
self.assertHTMLEqual(
f["message"].as_text(), '<input type="text" name="message" required>'
)
f = ContactForm({"subject": "Hello", "message": "I love you."}, auto_id=False)
self.assertHTMLEqual(
f["subject"].as_textarea(),
'<textarea rows="10" cols="40" name="subject" required>Hello</textarea>',
)
self.assertHTMLEqual(
f["message"].as_text(),
'<input type="text" name="message" value="I love you." required>',
)
self.assertHTMLEqual(
f["message"].as_hidden(),
'<input type="hidden" name="message" value="I love you.">',
)
def test_forms_with_choices(self):
# For a form with a <select>, use ChoiceField:
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(choices=[("P", "Python"), ("J", "Java")])
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(
str(f["language"]),
"""<select name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""",
)
f = FrameworkForm({"name": "Django", "language": "P"}, auto_id=False)
self.assertHTMLEqual(
str(f["language"]),
"""<select name="language">
<option value="P" selected>Python</option>
<option value="J">Java</option>
</select>""",
)
# A subtlety: If one of the choices' value is the empty string and the form is
# unbound, then the <option> for the empty-string choice will get selected.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(
choices=[("", "------"), ("P", "Python"), ("J", "Java")]
)
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(
str(f["language"]),
"""<select name="language" required>
<option value="" selected>------</option>
<option value="P">Python</option>
<option value="J">Java</option>
</select>""",
)
# You can specify widget attributes in the Widget constructor.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(
choices=[("P", "Python"), ("J", "Java")],
widget=Select(attrs={"class": "foo"}),
)
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(
str(f["language"]),
"""<select class="foo" name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""",
)
f = FrameworkForm({"name": "Django", "language": "P"}, auto_id=False)
self.assertHTMLEqual(
str(f["language"]),
"""<select class="foo" name="language">
<option value="P" selected>Python</option>
<option value="J">Java</option>
</select>""",
)
# When passing a custom widget instance to ChoiceField, note that setting
# 'choices' on the widget is meaningless. The widget will use the choices
# defined on the Field, not the ones defined on the Widget.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(
choices=[("P", "Python"), ("J", "Java")],
widget=Select(
choices=[("R", "Ruby"), ("P", "Perl")], attrs={"class": "foo"}
),
)
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(
str(f["language"]),
"""<select class="foo" name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""",
)
f = FrameworkForm({"name": "Django", "language": "P"}, auto_id=False)
self.assertHTMLEqual(
str(f["language"]),
"""<select class="foo" name="language">
<option value="P" selected>Python</option>
<option value="J">Java</option>
</select>""",
)
# You can set a ChoiceField's choices after the fact.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField()
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(
str(f["language"]),
"""<select name="language">
</select>""",
)
f.fields["language"].choices = [("P", "Python"), ("J", "Java")]
self.assertHTMLEqual(
str(f["language"]),
"""<select name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""",
)
def test_forms_with_radio(self):
# Add widget=RadioSelect to use that widget with a ChoiceField.
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(
str(f["language"]),
"""<div>
<div><label><input type="radio" name="language" value="P" required> Python</label></div>
<div><label><input type="radio" name="language" value="J" required> Java</label></div>
</div>""",
)
self.assertHTMLEqual(
f.as_table(),
"""<tr><th>Name:</th><td><input type="text" name="name" required></td></tr>
<tr><th>Language:</th><td><div>
<div><label><input type="radio" name="language" value="P" required> Python</label></div>
<div><label><input type="radio" name="language" value="J" required> Java</label></div>
</div></td></tr>""",
)
self.assertHTMLEqual(
f.as_ul(),
"""<li>Name: <input type="text" name="name" required></li>
<li>Language: <div>
<div><label><input type="radio" name="language" value="P" required> Python</label></div>
<div><label><input type="radio" name="language" value="J" required> Java</label></div>
</div></li>""",
)
# Need an auto_id to generate legend.
self.assertHTMLEqual(
f.render(f.template_name_div),
'<div> Name: <input type="text" name="name" required></div><div><fieldset>'
'Language:<div><div><label><input type="radio" name="language" value="P" '
'required> Python</label></div><div><label><input type="radio" '
'name="language" value="J" required> Java</label></div></div></fieldset>'
"</div>",
)
# Regarding auto_id and <label>, RadioSelect is a special case. Each
# radio button gets a distinct ID, formed by appending an underscore
# plus the button's zero-based index.
f = FrameworkForm(auto_id="id_%s")
self.assertHTMLEqual(
str(f["language"]),
"""
<div id="id_language">
<div><label for="id_language_0">
<input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1">
<input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div>""",
)
# When RadioSelect is used with auto_id, and the whole form is printed
# using either as_table() or as_ul(), the label for the RadioSelect
# will **not** point to the ID of the *first* radio button to improve
# accessibility for screen reader users.
self.assertHTMLEqual(
f.as_table(),
"""
<tr><th><label for="id_name">Name:</label></th><td>
<input type="text" name="name" id="id_name" required></td></tr>
<tr><th><label>Language:</label></th><td><div id="id_language">
<div><label for="id_language_0">
<input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1">
<input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div></td></tr>""",
)
self.assertHTMLEqual(
f.as_ul(),
"""
<li><label for="id_name">Name:</label>
<input type="text" name="name" id="id_name" required></li>
<li><label>Language:</label> <div id="id_language">
<div><label for="id_language_0">
<input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1">
<input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div></li>
""",
)
self.assertHTMLEqual(
f.as_p(),
"""
<p><label for="id_name">Name:</label>
<input type="text" name="name" id="id_name" required></p>
<p><label>Language:</label> <div id="id_language">
<div><label for="id_language_0">
<input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1">
<input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div></p>
""",
)
self.assertHTMLEqual(
f.render(f.template_name_div),
'<div><label for="id_name">Name:</label><input type="text" name="name" '
'required id="id_name"></div><div><fieldset><legend>Language:</legend>'
'<div id="id_language"><div><label for="id_language_0"><input '
'type="radio" name="language" value="P" required id="id_language_0">'
'Python</label></div><div><label for="id_language_1"><input type="radio" '
'name="language" value="J" required id="id_language_1">Java</label></div>'
"</div></fieldset></div>",
)
def test_form_with_iterable_boundfield(self):
class BeatleForm(Form):
name = ChoiceField(
choices=[
("john", "John"),
("paul", "Paul"),
("george", "George"),
("ringo", "Ringo"),
],
widget=RadioSelect,
)
f = BeatleForm(auto_id=False)
self.assertHTMLEqual(
"\n".join(str(bf) for bf in f["name"]),
'<label><input type="radio" name="name" value="john" required> John</label>'
'<label><input type="radio" name="name" value="paul" required> Paul</label>'
'<label><input type="radio" name="name" value="george" required> George'
"</label>"
'<label><input type="radio" name="name" value="ringo" required> Ringo'
"</label>",
)
self.assertHTMLEqual(
"\n".join("<div>%s</div>" % bf for bf in f["name"]),
"""
<div><label>
<input type="radio" name="name" value="john" required> John</label></div>
<div><label>
<input type="radio" name="name" value="paul" required> Paul</label></div>
<div><label>
<input type="radio" name="name" value="george" required> George
</label></div>
<div><label>
<input type="radio" name="name" value="ringo" required> Ringo</label></div>
""",
)
def test_form_with_iterable_boundfield_id(self):
class BeatleForm(Form):
name = ChoiceField(
choices=[
("john", "John"),
("paul", "Paul"),
("george", "George"),
("ringo", "Ringo"),
],
widget=RadioSelect,
)
fields = list(BeatleForm()["name"])
self.assertEqual(len(fields), 4)
self.assertEqual(fields[0].id_for_label, "id_name_0")
self.assertEqual(fields[0].choice_label, "John")
self.assertHTMLEqual(
fields[0].tag(),
'<input type="radio" name="name" value="john" id="id_name_0" required>',
)
self.assertHTMLEqual(
str(fields[0]),
'<label for="id_name_0"><input type="radio" name="name" '
'value="john" id="id_name_0" required> John</label>',
)
self.assertEqual(fields[1].id_for_label, "id_name_1")
self.assertEqual(fields[1].choice_label, "Paul")
self.assertHTMLEqual(
fields[1].tag(),
'<input type="radio" name="name" value="paul" id="id_name_1" required>',
)
self.assertHTMLEqual(
str(fields[1]),
'<label for="id_name_1"><input type="radio" name="name" '
'value="paul" id="id_name_1" required> Paul</label>',
)
def test_iterable_boundfield_select(self):
class BeatleForm(Form):
name = ChoiceField(
choices=[
("john", "John"),
("paul", "Paul"),
("george", "George"),
("ringo", "Ringo"),
]
)
fields = list(BeatleForm(auto_id=False)["name"])
self.assertEqual(len(fields), 4)
self.assertIsNone(fields[0].id_for_label)
self.assertEqual(fields[0].choice_label, "John")
self.assertHTMLEqual(fields[0].tag(), '<option value="john">John</option>')
self.assertHTMLEqual(str(fields[0]), '<option value="john">John</option>')
def test_form_with_noniterable_boundfield(self):
# You can iterate over any BoundField, not just those with widget=RadioSelect.
class BeatleForm(Form):
name = CharField()
f = BeatleForm(auto_id=False)
self.assertHTMLEqual(
"\n".join(str(bf) for bf in f["name"]),
'<input type="text" name="name" required>',
)
def test_boundfield_slice(self):
class BeatleForm(Form):
name = ChoiceField(
choices=[
("john", "John"),
("paul", "Paul"),
("george", "George"),
("ringo", "Ringo"),
],
widget=RadioSelect,
)
f = BeatleForm()
bf = f["name"]
self.assertEqual(
[str(item) for item in bf[1:]],
[str(bf[1]), str(bf[2]), str(bf[3])],
)
def test_boundfield_invalid_index(self):
class TestForm(Form):
name = ChoiceField(choices=[])
field = TestForm()["name"]
msg = "BoundField indices must be integers or slices, not str."
with self.assertRaisesMessage(TypeError, msg):
field["foo"]
def test_boundfield_bool(self):
"""BoundField without any choices (subwidgets) evaluates to True."""
class TestForm(Form):
name = ChoiceField(choices=[])
self.assertIs(bool(TestForm()["name"]), True)
def test_forms_with_multiple_choice(self):
# MultipleChoiceField is a special case, as its data is required to be a list:
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField()
f = SongForm(auto_id=False)
self.assertHTMLEqual(
str(f["composers"]),
"""<select multiple name="composers" required>
</select>""",
)
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[("J", "John Lennon"), ("P", "Paul McCartney")]
)
f = SongForm(auto_id=False)
self.assertHTMLEqual(
str(f["composers"]),
"""<select multiple name="composers" required>
<option value="J">John Lennon</option>
<option value="P">Paul McCartney</option>
</select>""",
)
f = SongForm({"name": "Yesterday", "composers": ["P"]}, auto_id=False)
self.assertHTMLEqual(
str(f["name"]), '<input type="text" name="name" value="Yesterday" required>'
)
self.assertHTMLEqual(
str(f["composers"]),
"""<select multiple name="composers" required>
<option value="J">John Lennon</option>
<option value="P" selected>Paul McCartney</option>
</select>""",
)
f = SongForm()
self.assertHTMLEqual(
f.as_table(),
'<tr><th><label for="id_name">Name:</label></th>'
'<td><input type="text" name="name" required id="id_name"></td>'
'</tr><tr><th><label for="id_composers">Composers:</label></th>'
'<td><select name="composers" required id="id_composers" multiple>'
'<option value="J">John Lennon</option>'
'<option value="P">Paul McCartney</option>'
"</select></td></tr>",
)
self.assertHTMLEqual(
f.as_ul(),
'<li><label for="id_name">Name:</label>'
'<input type="text" name="name" required id="id_name"></li>'
'<li><label for="id_composers">Composers:</label>'
'<select name="composers" required id="id_composers" multiple>'
'<option value="J">John Lennon</option>'
'<option value="P">Paul McCartney</option>'
"</select></li>",
)
self.assertHTMLEqual(
f.as_p(),
'<p><label for="id_name">Name:</label>'
'<input type="text" name="name" required id="id_name"></p>'
'<p><label for="id_composers">Composers:</label>'
'<select name="composers" required id="id_composers" multiple>'
'<option value="J">John Lennon</option>'
'<option value="P">Paul McCartney</option>'
"</select></p>",
)
self.assertHTMLEqual(
f.render(f.template_name_div),
'<div><label for="id_name">Name:</label><input type="text" name="name" '
'required id="id_name"></div><div><label for="id_composers">Composers:'
'</label><select name="composers" required id="id_composers" multiple>'
'<option value="J">John Lennon</option><option value="P">Paul McCartney'
"</option></select></div>",
)
def test_multiple_checkbox_render(self):
f = SongForm()
self.assertHTMLEqual(
f.as_table(),
'<tr><th><label for="id_name">Name:</label></th><td>'
'<input type="text" name="name" required id="id_name"></td></tr>'
'<tr><th><label>Composers:</label></th><td><div id="id_composers">'
'<div><label for="id_composers_0">'
'<input type="checkbox" name="composers" value="J" '
'id="id_composers_0">John Lennon</label></div>'
'<div><label for="id_composers_1">'
'<input type="checkbox" name="composers" value="P" '
'id="id_composers_1">Paul McCartney</label></div>'
"</div></td></tr>",
)
self.assertHTMLEqual(
f.as_ul(),
'<li><label for="id_name">Name:</label>'
'<input type="text" name="name" required id="id_name"></li>'
'<li><label>Composers:</label><div id="id_composers">'
'<div><label for="id_composers_0">'
'<input type="checkbox" name="composers" value="J" '
'id="id_composers_0">John Lennon</label></div>'
'<div><label for="id_composers_1">'
'<input type="checkbox" name="composers" value="P" '
'id="id_composers_1">Paul McCartney</label></div>'
"</div></li>",
)
self.assertHTMLEqual(
f.as_p(),
'<p><label for="id_name">Name:</label>'
'<input type="text" name="name" required id="id_name"></p>'
'<p><label>Composers:</label><div id="id_composers">'
'<div><label for="id_composers_0">'
'<input type="checkbox" name="composers" value="J" '
'id="id_composers_0">John Lennon</label></div>'
'<div><label for="id_composers_1">'
'<input type="checkbox" name="composers" value="P" '
'id="id_composers_1">Paul McCartney</label></div>'
"</div></p>",
)
self.assertHTMLEqual(
f.render(f.template_name_div),
'<div><label for="id_name">Name:</label><input type="text" name="name" '
'required id="id_name"></div><div><fieldset><legend>Composers:</legend>'
'<div id="id_composers"><div><label for="id_composers_0"><input '
'type="checkbox" name="composers" value="J" id="id_composers_0">'
'John Lennon</label></div><div><label for="id_composers_1"><input '
'type="checkbox" name="composers" value="P" id="id_composers_1">'
"Paul McCartney</label></div></div></fieldset></div>",
)
def test_form_with_disabled_fields(self):
class PersonForm(Form):
name = CharField()
birthday = DateField(disabled=True)
class PersonFormFieldInitial(Form):
name = CharField()
birthday = DateField(disabled=True, initial=datetime.date(1974, 8, 16))
# Disabled fields are generally not transmitted by user agents.
# The value from the form's initial data is used.
f1 = PersonForm(
{"name": "John Doe"}, initial={"birthday": datetime.date(1974, 8, 16)}
)
f2 = PersonFormFieldInitial({"name": "John Doe"})
for form in (f1, f2):
self.assertTrue(form.is_valid())
self.assertEqual(
form.cleaned_data,
{"birthday": datetime.date(1974, 8, 16), "name": "John Doe"},
)
# Values provided in the form's data are ignored.
data = {"name": "John Doe", "birthday": "1984-11-10"}
f1 = PersonForm(data, initial={"birthday": datetime.date(1974, 8, 16)})
f2 = PersonFormFieldInitial(data)
for form in (f1, f2):
self.assertTrue(form.is_valid())
self.assertEqual(
form.cleaned_data,
{"birthday": datetime.date(1974, 8, 16), "name": "John Doe"},
)
# Initial data remains present on invalid forms.
data = {}
f1 = PersonForm(data, initial={"birthday": datetime.date(1974, 8, 16)})
f2 = PersonFormFieldInitial(data)
for form in (f1, f2):
self.assertFalse(form.is_valid())
self.assertEqual(form["birthday"].value(), datetime.date(1974, 8, 16))
def test_hidden_data(self):
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[("J", "John Lennon"), ("P", "Paul McCartney")]
)
# MultipleChoiceField rendered as_hidden() is a special case. Because it can
# have multiple values, its as_hidden() renders multiple <input type="hidden">
# tags.
f = SongForm({"name": "Yesterday", "composers": ["P"]}, auto_id=False)
self.assertHTMLEqual(
f["composers"].as_hidden(),
'<input type="hidden" name="composers" value="P">',
)
f = SongForm({"name": "From Me To You", "composers": ["P", "J"]}, auto_id=False)
self.assertHTMLEqual(
f["composers"].as_hidden(),
"""<input type="hidden" name="composers" value="P">
<input type="hidden" name="composers" value="J">""",
)
# DateTimeField rendered as_hidden() is special too
class MessageForm(Form):
when = SplitDateTimeField()
f = MessageForm({"when_0": "1992-01-01", "when_1": "01:01"})
self.assertTrue(f.is_valid())
self.assertHTMLEqual(
str(f["when"]),
'<input type="text" name="when_0" value="1992-01-01" id="id_when_0" '
"required>"
'<input type="text" name="when_1" value="01:01" id="id_when_1" required>',
)
self.assertHTMLEqual(
f["when"].as_hidden(),
'<input type="hidden" name="when_0" value="1992-01-01" id="id_when_0">'
'<input type="hidden" name="when_1" value="01:01" id="id_when_1">',
)
def test_multiple_choice_checkbox(self):
# MultipleChoiceField can also be used with the CheckboxSelectMultiple widget.
f = SongForm(auto_id=False)
self.assertHTMLEqual(
str(f["composers"]),
"""
<div>
<div><label><input type="checkbox" name="composers" value="J">
John Lennon</label></div>
<div><label><input type="checkbox" name="composers" value="P">
Paul McCartney</label></div>
</div>
""",
)
f = SongForm({"composers": ["J"]}, auto_id=False)
self.assertHTMLEqual(
str(f["composers"]),
"""
<div>
<div><label><input checked type="checkbox" name="composers" value="J">
John Lennon</label></div>
<div><label><input type="checkbox" name="composers" value="P">
Paul McCartney</label></div>
</div>
""",
)
f = SongForm({"composers": ["J", "P"]}, auto_id=False)
self.assertHTMLEqual(
str(f["composers"]),
"""
<div>
<div><label><input checked type="checkbox" name="composers" value="J">
John Lennon</label></div>
<div><label><input checked type="checkbox" name="composers" value="P">
Paul McCartney</label></div>
</div>
""",
)
def test_checkbox_auto_id(self):
# Regarding auto_id, CheckboxSelectMultiple is a special case. Each checkbox
# gets a distinct ID, formed by appending an underscore plus the checkbox's
# zero-based index.
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[("J", "John Lennon"), ("P", "Paul McCartney")],
widget=CheckboxSelectMultiple,
)
f = SongForm(auto_id="%s_id")
self.assertHTMLEqual(
str(f["composers"]),
"""
<div id="composers_id">
<div><label for="composers_id_0">
<input type="checkbox" name="composers" value="J" id="composers_id_0">
John Lennon</label></div>
<div><label for="composers_id_1">
<input type="checkbox" name="composers" value="P" id="composers_id_1">
Paul McCartney</label></div>
</div>
""",
)
def test_multiple_choice_list_data(self):
# Data for a MultipleChoiceField should be a list. QueryDict and
# MultiValueDict conveniently work with this.
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[("J", "John Lennon"), ("P", "Paul McCartney")],
widget=CheckboxSelectMultiple,
)
data = {"name": "Yesterday", "composers": ["J", "P"]}
f = SongForm(data)
self.assertEqual(f.errors, {})
data = QueryDict("name=Yesterday&composers=J&composers=P")
f = SongForm(data)
self.assertEqual(f.errors, {})
data = MultiValueDict({"name": ["Yesterday"], "composers": ["J", "P"]})
f = SongForm(data)
self.assertEqual(f.errors, {})
# SelectMultiple uses ducktyping so that MultiValueDictLike.getlist()
# is called.
f = SongForm(MultiValueDictLike({"name": "Yesterday", "composers": "J"}))
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data["composers"], ["J"])
def test_multiple_hidden(self):
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[("J", "John Lennon"), ("P", "Paul McCartney")],
widget=CheckboxSelectMultiple,
)
# The MultipleHiddenInput widget renders multiple values as hidden fields.
class SongFormHidden(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[("J", "John Lennon"), ("P", "Paul McCartney")],
widget=MultipleHiddenInput,
)
f = SongFormHidden(
MultiValueDict({"name": ["Yesterday"], "composers": ["J", "P"]}),
auto_id=False,
)
self.assertHTMLEqual(
f.as_ul(),
"""<li>Name: <input type="text" name="name" value="Yesterday" required>
<input type="hidden" name="composers" value="J">
<input type="hidden" name="composers" value="P"></li>""",
)
# When using CheckboxSelectMultiple, the framework expects a list of input and
# returns a list of input.
f = SongForm({"name": "Yesterday"}, auto_id=False)
self.assertEqual(f.errors["composers"], ["This field is required."])
f = SongForm({"name": "Yesterday", "composers": ["J"]}, auto_id=False)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data["composers"], ["J"])
self.assertEqual(f.cleaned_data["name"], "Yesterday")
f = SongForm({"name": "Yesterday", "composers": ["J", "P"]}, auto_id=False)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data["composers"], ["J", "P"])
self.assertEqual(f.cleaned_data["name"], "Yesterday")
# MultipleHiddenInput uses ducktyping so that
# MultiValueDictLike.getlist() is called.
f = SongForm(MultiValueDictLike({"name": "Yesterday", "composers": "J"}))
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data["composers"], ["J"])
def test_escaping(self):
# Validation errors are HTML-escaped when output as HTML.
class EscapingForm(Form):
special_name = CharField(label="<em>Special</em> Field")
special_safe_name = CharField(label=mark_safe("<em>Special</em> Field"))
def clean_special_name(self):
raise ValidationError(
"Something's wrong with '%s'" % self.cleaned_data["special_name"]
)
def clean_special_safe_name(self):
raise ValidationError(
mark_safe(
"'<b>%s</b>' is a safe string"
% self.cleaned_data["special_safe_name"]
)
)
f = EscapingForm(
{
"special_name": "Nothing to escape",
"special_safe_name": "Nothing to escape",
},
auto_id=False,
)
self.assertHTMLEqual(
f.as_table(),
"""
<tr><th>&lt;em&gt;Special&lt;/em&gt; Field:</th><td>
<ul class="errorlist">
<li>Something&#x27;s wrong with &#x27;Nothing to escape&#x27;</li></ul>
<input type="text" name="special_name" value="Nothing to escape"
aria-invalid="true" required></td></tr>
<tr><th><em>Special</em> Field:</th><td>
<ul class="errorlist">
<li>'<b>Nothing to escape</b>' is a safe string</li></ul>
<input type="text" name="special_safe_name" value="Nothing to escape"
aria-invalid="true" required></td></tr>
""",
)
f = EscapingForm(
{
"special_name": "Should escape < & > and <script>alert('xss')</script>",
"special_safe_name": "<i>Do not escape</i>",
},
auto_id=False,
)
self.assertHTMLEqual(
f.as_table(),
"<tr><th>&lt;em&gt;Special&lt;/em&gt; Field:</th><td>"
'<ul class="errorlist"><li>'
"Something&#x27;s wrong with &#x27;Should escape &lt; &amp; &gt; and "
"&lt;script&gt;alert(&#x27;xss&#x27;)&lt;/script&gt;&#x27;</li></ul>"
'<input type="text" name="special_name" value="Should escape &lt; &amp; '
'&gt; and &lt;script&gt;alert(&#x27;xss&#x27;)&lt;/script&gt;" '
'aria-invalid="true" required></td></tr>'
"<tr><th><em>Special</em> Field:</th><td>"
'<ul class="errorlist">'
"<li>'<b><i>Do not escape</i></b>' is a safe string</li></ul>"
'<input type="text" name="special_safe_name" '
'value="&lt;i&gt;Do not escape&lt;/i&gt;" aria-invalid="true" required>'
"</td></tr>",
)
def test_validating_multiple_fields(self):
# There are a couple of ways to do multiple-field validation. If you
# want the validation message to be associated with a particular field,
# implement the clean_XXX() method on the Form, where XXX is the field
# name. As in Field.clean(), the clean_XXX() method should return the
# cleaned value. In the clean_XXX() method, you have access to
# self.cleaned_data, which is a dictionary of all the data that has
# been cleaned *so far*, in order by the fields, including the current
# field (e.g., the field XXX if you're in clean_XXX()).
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean_password2(self):
if (
self.cleaned_data.get("password1")
and self.cleaned_data.get("password2")
and self.cleaned_data["password1"] != self.cleaned_data["password2"]
):
raise ValidationError("Please make sure your passwords match.")
return self.cleaned_data["password2"]
f = UserRegistration(auto_id=False)
self.assertEqual(f.errors, {})
f = UserRegistration({}, auto_id=False)
self.assertEqual(f.errors["username"], ["This field is required."])
self.assertEqual(f.errors["password1"], ["This field is required."])
self.assertEqual(f.errors["password2"], ["This field is required."])
f = UserRegistration(
{"username": "adrian", "password1": "foo", "password2": "bar"},
auto_id=False,
)
self.assertEqual(
f.errors["password2"], ["Please make sure your passwords match."]
)
f = UserRegistration(
{"username": "adrian", "password1": "foo", "password2": "foo"},
auto_id=False,
)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data["username"], "adrian")
self.assertEqual(f.cleaned_data["password1"], "foo")
self.assertEqual(f.cleaned_data["password2"], "foo")
# Another way of doing multiple-field validation is by implementing the
# Form's clean() method. Usually ValidationError raised by that method
# will not be associated with a particular field and will have a
# special-case association with the field named '__all__'. It's
# possible to associate the errors to particular field with the
# Form.add_error() method or by passing a dictionary that maps each
# field to one or more errors.
#
# Note that in Form.clean(), you have access to self.cleaned_data, a
# dictionary of all the fields/values that have *not* raised a
# ValidationError. Also note Form.clean() is required to return a
# dictionary of all clean data.
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean(self):
# Test raising a ValidationError as NON_FIELD_ERRORS.
if (
self.cleaned_data.get("password1")
and self.cleaned_data.get("password2")
and self.cleaned_data["password1"] != self.cleaned_data["password2"]
):
raise ValidationError("Please make sure your passwords match.")
# Test raising ValidationError that targets multiple fields.
errors = {}
if self.cleaned_data.get("password1") == "FORBIDDEN_VALUE":
errors["password1"] = "Forbidden value."
if self.cleaned_data.get("password2") == "FORBIDDEN_VALUE":
errors["password2"] = ["Forbidden value."]
if errors:
raise ValidationError(errors)
# Test Form.add_error()
if self.cleaned_data.get("password1") == "FORBIDDEN_VALUE2":
self.add_error(None, "Non-field error 1.")
self.add_error("password1", "Forbidden value 2.")
if self.cleaned_data.get("password2") == "FORBIDDEN_VALUE2":
self.add_error("password2", "Forbidden value 2.")
raise ValidationError("Non-field error 2.")
return self.cleaned_data
f = UserRegistration(auto_id=False)
self.assertEqual(f.errors, {})
f = UserRegistration({}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
"""<tr><th>Username:</th><td>
<ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="username" maxlength="10" aria-invalid="true" required>
</td></tr>
<tr><th>Password1:</th><td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="password" name="password1" aria-invalid="true" required></td></tr>
<tr><th>Password2:</th><td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="password" name="password2" aria-invalid="true" required></td></tr>""",
)
self.assertEqual(f.errors["username"], ["This field is required."])
self.assertEqual(f.errors["password1"], ["This field is required."])
self.assertEqual(f.errors["password2"], ["This field is required."])
f = UserRegistration(
{"username": "adrian", "password1": "foo", "password2": "bar"},
auto_id=False,
)
self.assertEqual(
f.errors["__all__"], ["Please make sure your passwords match."]
)
self.assertHTMLEqual(
f.as_table(),
"""
<tr><td colspan="2">
<ul class="errorlist nonfield">
<li>Please make sure your passwords match.</li></ul></td></tr>
<tr><th>Username:</th><td>
<input type="text" name="username" value="adrian" maxlength="10" required>
</td></tr>
<tr><th>Password1:</th><td>
<input type="password" name="password1" required></td></tr>
<tr><th>Password2:</th><td>
<input type="password" name="password2" required></td></tr>
""",
)
self.assertHTMLEqual(
f.as_ul(),
"""
<li><ul class="errorlist nonfield">
<li>Please make sure your passwords match.</li></ul></li>
<li>Username:
<input type="text" name="username" value="adrian" maxlength="10" required>
</li>
<li>Password1: <input type="password" name="password1" required></li>
<li>Password2: <input type="password" name="password2" required></li>
""",
)
self.assertHTMLEqual(
f.render(f.template_name_div),
'<ul class="errorlist nonfield"><li>Please make sure your passwords match.'
'</li></ul><div>Username: <input type="text" name="username" '
'value="adrian" maxlength="10" required></div><div>Password1: <input '
'type="password" name="password1" required></div><div>Password2: <input '
'type="password" name="password2" required></div>',
)
f = UserRegistration(
{"username": "adrian", "password1": "foo", "password2": "foo"},
auto_id=False,
)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data["username"], "adrian")
self.assertEqual(f.cleaned_data["password1"], "foo")
self.assertEqual(f.cleaned_data["password2"], "foo")
f = UserRegistration(
{
"username": "adrian",
"password1": "FORBIDDEN_VALUE",
"password2": "FORBIDDEN_VALUE",
},
auto_id=False,
)
self.assertEqual(f.errors["password1"], ["Forbidden value."])
self.assertEqual(f.errors["password2"], ["Forbidden value."])
f = UserRegistration(
{
"username": "adrian",
"password1": "FORBIDDEN_VALUE2",
"password2": "FORBIDDEN_VALUE2",
},
auto_id=False,
)
self.assertEqual(
f.errors["__all__"], ["Non-field error 1.", "Non-field error 2."]
)
self.assertEqual(f.errors["password1"], ["Forbidden value 2."])
self.assertEqual(f.errors["password2"], ["Forbidden value 2."])
with self.assertRaisesMessage(ValueError, "has no field named"):
f.add_error("missing_field", "Some error.")
def test_update_error_dict(self):
class CodeForm(Form):
code = CharField(max_length=10)
def clean(self):
try:
raise ValidationError({"code": [ValidationError("Code error 1.")]})
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError({"code": [ValidationError("Code error 2.")]})
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError({"code": ErrorList(["Code error 3."])})
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError("Non-field error 1.")
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError([ValidationError("Non-field error 2.")])
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
# The newly added list of errors is an instance of ErrorList.
for field, error_list in self._errors.items():
if not isinstance(error_list, self.error_class):
self._errors[field] = self.error_class(error_list)
form = CodeForm({"code": "hello"})
# Trigger validation.
self.assertFalse(form.is_valid())
# update_error_dict didn't lose track of the ErrorDict type.
self.assertIsInstance(form._errors, ErrorDict)
self.assertEqual(
dict(form.errors),
{
"code": ["Code error 1.", "Code error 2.", "Code error 3."],
NON_FIELD_ERRORS: ["Non-field error 1.", "Non-field error 2."],
},
)
def test_has_error(self):
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput, min_length=5)
password2 = CharField(widget=PasswordInput)
def clean(self):
if (
self.cleaned_data.get("password1")
and self.cleaned_data.get("password2")
and self.cleaned_data["password1"] != self.cleaned_data["password2"]
):
raise ValidationError(
"Please make sure your passwords match.",
code="password_mismatch",
)
f = UserRegistration(data={})
self.assertTrue(f.has_error("password1"))
self.assertTrue(f.has_error("password1", "required"))
self.assertFalse(f.has_error("password1", "anything"))
f = UserRegistration(data={"password1": "Hi", "password2": "Hi"})
self.assertTrue(f.has_error("password1"))
self.assertTrue(f.has_error("password1", "min_length"))
self.assertFalse(f.has_error("password1", "anything"))
self.assertFalse(f.has_error("password2"))
self.assertFalse(f.has_error("password2", "anything"))
f = UserRegistration(data={"password1": "Bonjour", "password2": "Hello"})
self.assertFalse(f.has_error("password1"))
self.assertFalse(f.has_error("password1", "required"))
self.assertTrue(f.has_error(NON_FIELD_ERRORS))
self.assertTrue(f.has_error(NON_FIELD_ERRORS, "password_mismatch"))
self.assertFalse(f.has_error(NON_FIELD_ERRORS, "anything"))
def test_html_output_with_hidden_input_field_errors(self):
class TestForm(Form):
hidden_input = CharField(widget=HiddenInput)
def clean(self):
self.add_error(None, "Form error")
f = TestForm(data={})
error_dict = {
"hidden_input": ["This field is required."],
"__all__": ["Form error"],
}
self.assertEqual(f.errors, error_dict)
f.as_table()
self.assertEqual(f.errors, error_dict)
self.assertHTMLEqual(
f.as_table(),
'<tr><td colspan="2"><ul class="errorlist nonfield"><li>Form error</li>'
"<li>(Hidden field hidden_input) This field is required.</li></ul>"
'<input type="hidden" name="hidden_input" id="id_hidden_input"></td></tr>',
)
self.assertHTMLEqual(
f.as_ul(),
'<li><ul class="errorlist nonfield"><li>Form error</li>'
"<li>(Hidden field hidden_input) This field is required.</li></ul>"
'<input type="hidden" name="hidden_input" id="id_hidden_input"></li>',
)
self.assertHTMLEqual(
f.as_p(),
'<ul class="errorlist nonfield"><li>Form error</li>'
"<li>(Hidden field hidden_input) This field is required.</li></ul>"
'<p><input type="hidden" name="hidden_input" id="id_hidden_input"></p>',
)
self.assertHTMLEqual(
f.render(f.template_name_div),
'<ul class="errorlist nonfield"><li>Form error</li>'
"<li>(Hidden field hidden_input) This field is required.</li></ul>"
'<div><input type="hidden" name="hidden_input" id="id_hidden_input"></div>',
)
def test_dynamic_construction(self):
# It's possible to construct a Form dynamically by adding to the self.fields
# dictionary in __init__(). Don't forget to call Form.__init__() within the
# subclass' __init__().
class Person(Form):
first_name = CharField()
last_name = CharField()
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.fields["birthday"] = DateField()
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_table(),
"""
<tr><th>First name:</th><td>
<input type="text" name="first_name" required></td></tr>
<tr><th>Last name:</th><td>
<input type="text" name="last_name" required></td></tr>
<tr><th>Birthday:</th><td>
<input type="text" name="birthday" required></td></tr>
""",
)
# Instances of a dynamic Form do not persist fields from one Form instance to
# the next.
class MyForm(Form):
def __init__(self, data=None, auto_id=False, field_list=[]):
Form.__init__(self, data, auto_id=auto_id)
for field in field_list:
self.fields[field[0]] = field[1]
field_list = [("field1", CharField()), ("field2", CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""
<tr><th>Field1:</th><td><input type="text" name="field1" required></td></tr>
<tr><th>Field2:</th><td><input type="text" name="field2" required></td></tr>
""",
)
field_list = [("field3", CharField()), ("field4", CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""
<tr><th>Field3:</th><td><input type="text" name="field3" required></td></tr>
<tr><th>Field4:</th><td><input type="text" name="field4" required></td></tr>
""",
)
class MyForm(Form):
default_field_1 = CharField()
default_field_2 = CharField()
def __init__(self, data=None, auto_id=False, field_list=[]):
Form.__init__(self, data, auto_id=auto_id)
for field in field_list:
self.fields[field[0]] = field[1]
field_list = [("field1", CharField()), ("field2", CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""
<tr><th>Default field 1:</th><td>
<input type="text" name="default_field_1" required></td></tr>
<tr><th>Default field 2:</th><td>
<input type="text" name="default_field_2" required></td></tr>
<tr><th>Field1:</th><td><input type="text" name="field1" required></td></tr>
<tr><th>Field2:</th><td><input type="text" name="field2" required></td></tr>
""",
)
field_list = [("field3", CharField()), ("field4", CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""
<tr><th>Default field 1:</th><td>
<input type="text" name="default_field_1" required></td></tr>
<tr><th>Default field 2:</th><td>
<input type="text" name="default_field_2" required></td></tr>
<tr><th>Field3:</th><td><input type="text" name="field3" required></td></tr>
<tr><th>Field4:</th><td><input type="text" name="field4" required></td></tr>
""",
)
# Similarly, changes to field attributes do not persist from one Form instance
# to the next.
class Person(Form):
first_name = CharField(required=False)
last_name = CharField(required=False)
def __init__(self, names_required=False, *args, **kwargs):
super().__init__(*args, **kwargs)
if names_required:
self.fields["first_name"].required = True
self.fields["first_name"].widget.attrs["class"] = "required"
self.fields["last_name"].required = True
self.fields["last_name"].widget.attrs["class"] = "required"
f = Person(names_required=False)
self.assertEqual(
f["first_name"].field.required,
f["last_name"].field.required,
(False, False),
)
self.assertEqual(
f["first_name"].field.widget.attrs,
f["last_name"].field.widget.attrs,
({}, {}),
)
f = Person(names_required=True)
self.assertEqual(
f["first_name"].field.required, f["last_name"].field.required, (True, True)
)
self.assertEqual(
f["first_name"].field.widget.attrs,
f["last_name"].field.widget.attrs,
({"class": "reuired"}, {"class": "required"}),
)
f = Person(names_required=False)
self.assertEqual(
f["first_name"].field.required,
f["last_name"].field.required,
(False, False),
)
self.assertEqual(
f["first_name"].field.widget.attrs,
f["last_name"].field.widget.attrs,
({}, {}),
)
class Person(Form):
first_name = CharField(max_length=30)
last_name = CharField(max_length=30)
def __init__(self, name_max_length=None, *args, **kwargs):
super().__init__(*args, **kwargs)
if name_max_length:
self.fields["first_name"].max_length = name_max_length
self.fields["last_name"].max_length = name_max_length
f = Person(name_max_length=None)
self.assertEqual(
f["first_name"].field.max_length, f["last_name"].field.max_length, (30, 30)
)
f = Person(name_max_length=20)
self.assertEqual(
f["first_name"].field.max_length, f["last_name"].field.max_length, (20, 20)
)
f = Person(name_max_length=None)
self.assertEqual(
f["first_name"].field.max_length, f["last_name"].field.max_length, (30, 30)
)
# Similarly, choices do not persist from one Form instance to the next.
# Refs #15127.
class Person(Form):
first_name = CharField(required=False)
last_name = CharField(required=False)
gender = ChoiceField(choices=(("f", "Female"), ("m", "Male")))
def __init__(self, allow_unspec_gender=False, *args, **kwargs):
super().__init__(*args, **kwargs)
if allow_unspec_gender:
self.fields["gender"].choices += (("u", "Unspecified"),)
f = Person()
self.assertEqual(f["gender"].field.choices, [("f", "Female"), ("m", "Male")])
f = Person(allow_unspec_gender=True)
self.assertEqual(
f["gender"].field.choices,
[("f", "Female"), ("m", "Male"), ("u", "Unspecified")],
)
f = Person()
self.assertEqual(f["gender"].field.choices, [("f", "Female"), ("m", "Male")])
def test_validators_independence(self):
"""
The list of form field validators can be modified without polluting
other forms.
"""
class MyForm(Form):
myfield = CharField(max_length=25)
f1 = MyForm()
f2 = MyForm()
f1.fields["myfield"].validators[0] = MaxValueValidator(12)
self.assertNotEqual(
f1.fields["myfield"].validators[0], f2.fields["myfield"].validators[0]
)
def test_hidden_widget(self):
# HiddenInput widgets are displayed differently in the as_table(), as_ul())
# and as_p() output of a Form -- their verbose names are not displayed, and a
# separate row is not displayed. They're displayed in the last row of the
# form, directly after that row's form element.
class Person(Form):
first_name = CharField()
last_name = CharField()
hidden_text = CharField(widget=HiddenInput)
birthday = DateField()
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_table(),
"""
<tr><th>First name:</th><td><input type="text" name="first_name" required>
</td></tr>
<tr><th>Last name:</th><td><input type="text" name="last_name" required>
</td></tr>
<tr><th>Birthday:</th>
<td><input type="text" name="birthday" required>
<input type="hidden" name="hidden_text"></td></tr>
""",
)
self.assertHTMLEqual(
p.as_ul(),
"""
<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required>
<input type="hidden" name="hidden_text"></li>
""",
)
self.assertHTMLEqual(
p.as_p(),
"""
<p>First name: <input type="text" name="first_name" required></p>
<p>Last name: <input type="text" name="last_name" required></p>
<p>Birthday: <input type="text" name="birthday" required>
<input type="hidden" name="hidden_text"></p>
""",
)
self.assertHTMLEqual(
p.as_div(),
'<div>First name: <input type="text" name="first_name" required></div>'
'<div>Last name: <input type="text" name="last_name" required></div><div>'
'Birthday: <input type="text" name="birthday" required><input '
'type="hidden" name="hidden_text"></div>',
)
# With auto_id set, a HiddenInput still gets an ID, but it doesn't get a label.
p = Person(auto_id="id_%s")
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" id="id_birthday" required>
<input type="hidden" name="hidden_text" id="id_hidden_text"></td></tr>""",
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></li>
<li><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></li>
<li><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required>
<input type="hidden" name="hidden_text" id="id_hidden_text"></li>""",
)
self.assertHTMLEqual(
p.as_p(),
"""<p><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></p>
<p><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></p>
<p><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required>
<input type="hidden" name="hidden_text" id="id_hidden_text"></p>""",
)
self.assertHTMLEqual(
p.as_div(),
'<div><label for="id_first_name">First name:</label><input type="text" '
'name="first_name" id="id_first_name" required></div><div><label '
'for="id_last_name">Last name:</label><input type="text" name="last_name" '
'id="id_last_name" required></div><div><label for="id_birthday">Birthday:'
'</label><input type="text" name="birthday" id="id_birthday" required>'
'<input type="hidden" name="hidden_text" id="id_hidden_text"></div>',
)
# If a field with a HiddenInput has errors, the as_table() and as_ul() output
# will include the error message(s) with the text "(Hidden field [fieldname]) "
# prepended. This message is displayed at the top of the output, regardless of
# its field's order in the form.
p = Person(
{"first_name": "John", "last_name": "Lennon", "birthday": "1940-10-9"},
auto_id=False,
)
self.assertHTMLEqual(
p.as_table(),
"""
<tr><td colspan="2">
<ul class="errorlist nonfield"><li>
(Hidden field hidden_text) This field is required.</li></ul></td></tr>
<tr><th>First name:</th><td>
<input type="text" name="first_name" value="John" required></td></tr>
<tr><th>Last name:</th><td>
<input type="text" name="last_name" value="Lennon" required></td></tr>
<tr><th>Birthday:</th><td>
<input type="text" name="birthday" value="1940-10-9" required>
<input type="hidden" name="hidden_text"></td></tr>
""",
)
self.assertHTMLEqual(
p.as_ul(),
"""
<li><ul class="errorlist nonfield"><li>
(Hidden field hidden_text) This field is required.</li></ul></li>
<li>First name: <input type="text" name="first_name" value="John" required>
</li>
<li>Last name: <input type="text" name="last_name" value="Lennon" required>
</li>
<li>Birthday: <input type="text" name="birthday" value="1940-10-9" required>
<input type="hidden" name="hidden_text"></li>
""",
)
self.assertHTMLEqual(
p.as_p(),
"""
<ul class="errorlist nonfield"><li>
(Hidden field hidden_text) This field is required.</li></ul>
<p>First name: <input type="text" name="first_name" value="John" required>
</p>
<p>Last name: <input type="text" name="last_name" value="Lennon" required>
</p>
<p>Birthday: <input type="text" name="birthday" value="1940-10-9" required>
<input type="hidden" name="hidden_text"></p>
""",
)
self.assertHTMLEqual(
p.as_div(),
'<ul class="errorlist nonfield"><li>(Hidden field hidden_text) This field '
'is required.</li></ul><div>First name: <input type="text" '
'name="first_name" value="John" required></div><div>Last name: <input '
'type="text" name="last_name" value="Lennon" required></div><div>'
'Birthday: <input type="text" name="birthday" value="1940-10-9" required>'
'<input type="hidden" name="hidden_text"></div>',
)
# A corner case: It's possible for a form to have only HiddenInputs.
class TestForm(Form):
foo = CharField(widget=HiddenInput)
bar = CharField(widget=HiddenInput)
p = TestForm(auto_id=False)
self.assertHTMLEqual(
p.as_table(),
'<input type="hidden" name="foo"><input type="hidden" name="bar">',
)
self.assertHTMLEqual(
p.as_ul(),
'<input type="hidden" name="foo"><input type="hidden" name="bar">',
)
self.assertHTMLEqual(
p.as_p(), '<input type="hidden" name="foo"><input type="hidden" name="bar">'
)
def test_hidden_widget_does_not_have_aria_describedby(self):
class TestForm(Form):
hidden_text = CharField(widget=HiddenInput, help_text="Help Text")
f = TestForm()
self.assertEqual(
str(f), '<input type="hidden" name="hidden_text" id="id_hidden_text">'
)
def test_field_order(self):
# A Form's fields are displayed in the same order in which they were defined.
class TestForm(Form):
field1 = CharField()
field2 = CharField()
field3 = CharField()
field4 = CharField()
field5 = CharField()
field6 = CharField()
field7 = CharField()
field8 = CharField()
field9 = CharField()
field10 = CharField()
field11 = CharField()
field12 = CharField()
field13 = CharField()
field14 = CharField()
p = TestForm(auto_id=False)
self.assertHTMLEqual(
p.as_table(),
"".join(
f"<tr><th>Field{i}:</th><td>"
f'<input type="text" name="field{i}" required></td></tr>'
for i in range(1, 15)
),
)
def test_explicit_field_order(self):
class TestFormParent(Form):
field1 = CharField()
field2 = CharField()
field4 = CharField()
field5 = CharField()
field6 = CharField()
field_order = ["field6", "field5", "field4", "field2", "field1"]
class TestForm(TestFormParent):
field3 = CharField()
field_order = ["field2", "field4", "field3", "field5", "field6"]
class TestFormRemove(TestForm):
field1 = None
class TestFormMissing(TestForm):
field_order = ["field2", "field4", "field3", "field5", "field6", "field1"]
field1 = None
class TestFormInit(TestFormParent):
field3 = CharField()
field_order = None
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.order_fields(field_order=TestForm.field_order)
p = TestFormParent()
self.assertEqual(list(p.fields), TestFormParent.field_order)
p = TestFormRemove()
self.assertEqual(list(p.fields), TestForm.field_order)
p = TestFormMissing()
self.assertEqual(list(p.fields), TestForm.field_order)
p = TestForm()
self.assertEqual(list(p.fields), TestFormMissing.field_order)
p = TestFormInit()
order = [*TestForm.field_order, "field1"]
self.assertEqual(list(p.fields), order)
TestForm.field_order = ["unknown"]
p = TestForm()
self.assertEqual(
list(p.fields), ["field1", "field2", "field4", "field5", "field6", "field3"]
)
def test_form_html_attributes(self):
# Some Field classes have an effect on the HTML attributes of their associated
# Widget. If you set max_length in a CharField and its associated widget is
# either a TextInput or PasswordInput, then the widget's rendered HTML will
# include the "maxlength" attribute.
class UserRegistration(Form):
username = CharField(max_length=10) # uses TextInput by default
password = CharField(max_length=10, widget=PasswordInput)
realname = CharField(
max_length=10, widget=TextInput
) # redundantly define widget, just to test
address = CharField() # no max_length defined here
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""
<li>Username: <input type="text" name="username" maxlength="10" required>
</li>
<li>Password: <input type="password" name="password" maxlength="10"
required></li>
<li>Realname: <input type="text" name="realname" maxlength="10" required>
</li>
<li>Address: <input type="text" name="address" required></li>
""",
)
# If you specify a custom "attrs" that includes the "maxlength"
# attribute, the Field's max_length attribute will override whatever
# "maxlength" you specify in "attrs".
class UserRegistration(Form):
username = CharField(
max_length=10, widget=TextInput(attrs={"maxlength": 20})
)
password = CharField(max_length=10, widget=PasswordInput)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
'<li>Username: <input type="text" name="username" maxlength="10" required>'
"</li>"
'<li>Password: <input type="password" name="password" maxlength="10" '
"required></li>",
)
def test_specifying_labels(self):
# You can specify the label for a field by using the 'label' argument to a Field
# class. If you don't specify 'label', Django will use the field name with
# underscores converted to spaces, and the initial letter capitalized.
class UserRegistration(Form):
username = CharField(max_length=10, label="Your username")
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput, label="Contraseña (de nuevo)")
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""
<li>Your username:
<input type="text" name="username" maxlength="10" required></li>
<li>Password1: <input type="password" name="password1" required></li>
<li>Contraseña (de nuevo):
<input type="password" name="password2" required></li>
""",
)
# Labels for as_* methods will only end in a colon if they don't end in other
# punctuation already.
class Questions(Form):
q1 = CharField(label="The first question")
q2 = CharField(label="What is your name?")
q3 = CharField(label="The answer to life is:")
q4 = CharField(label="Answer this question!")
q5 = CharField(label="The last question. Period.")
self.assertHTMLEqual(
Questions(auto_id=False).as_p(),
"""<p>The first question: <input type="text" name="q1" required></p>
<p>What is your name? <input type="text" name="q2" required></p>
<p>The answer to life is: <input type="text" name="q3" required></p>
<p>Answer this question! <input type="text" name="q4" required></p>
<p>The last question. Period. <input type="text" name="q5" required></p>""",
)
self.assertHTMLEqual(
Questions().as_p(),
"""
<p><label for="id_q1">The first question:</label>
<input type="text" name="q1" id="id_q1" required></p>
<p><label for="id_q2">What is your name?</label>
<input type="text" name="q2" id="id_q2" required></p>
<p><label for="id_q3">The answer to life is:</label>
<input type="text" name="q3" id="id_q3" required></p>
<p><label for="id_q4">Answer this question!</label>
<input type="text" name="q4" id="id_q4" required></p>
<p><label for="id_q5">The last question. Period.</label>
<input type="text" name="q5" id="id_q5" required></p>
""",
)
# If a label is set to the empty string for a field, that field won't
# get a label.
class UserRegistration(Form):
username = CharField(max_length=10, label="")
password = CharField(widget=PasswordInput)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li> <input type="text" name="username" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>""",
)
p = UserRegistration(auto_id="id_%s")
self.assertHTMLEqual(
p.as_ul(),
"""
<li>
<input id="id_username" type="text" name="username" maxlength="10" required>
</li>
<li><label for="id_password">Password:</label>
<input type="password" name="password" id="id_password" required></li>
""",
)
# If label is None, Django will auto-create the label from the field name. This
# is default behavior.
class UserRegistration(Form):
username = CharField(max_length=10, label=None)
password = CharField(widget=PasswordInput)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
'<li>Username: <input type="text" name="username" maxlength="10" required>'
"</li>"
'<li>Password: <input type="password" name="password" required></li>',
)
p = UserRegistration(auto_id="id_%s")
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_username">Username:</label>
<input id="id_username" type="text" name="username" maxlength="10" required></li>
<li><label for="id_password">Password:</label>
<input type="password" name="password" id="id_password" required></li>""",
)
def test_label_suffix(self):
# You can specify the 'label_suffix' argument to a Form class to modify
# the punctuation symbol used at the end of a label. By default, the
# colon (:) is used, and is only appended to the label if the label
# doesn't already end with a punctuation symbol: ., !, ? or :. If you
# specify a different suffix, it will be appended regardless of the
# last character of the label.
class FavoriteForm(Form):
color = CharField(label="Favorite color?")
animal = CharField(label="Favorite animal")
answer = CharField(label="Secret answer", label_suffix=" =")
f = FavoriteForm(auto_id=False)
self.assertHTMLEqual(
f.as_ul(),
"""<li>Favorite color? <input type="text" name="color" required></li>
<li>Favorite animal: <input type="text" name="animal" required></li>
<li>Secret answer = <input type="text" name="answer" required></li>""",
)
f = FavoriteForm(auto_id=False, label_suffix="?")
self.assertHTMLEqual(
f.as_ul(),
"""<li>Favorite color? <input type="text" name="color" required></li>
<li>Favorite animal? <input type="text" name="animal" required></li>
<li>Secret answer = <input type="text" name="answer" required></li>""",
)
f = FavoriteForm(auto_id=False, label_suffix="")
self.assertHTMLEqual(
f.as_ul(),
"""<li>Favorite color? <input type="text" name="color" required></li>
<li>Favorite animal <input type="text" name="animal" required></li>
<li>Secret answer = <input type="text" name="answer" required></li>""",
)
f = FavoriteForm(auto_id=False, label_suffix="\u2192")
self.assertHTMLEqual(
f.as_ul(),
'<li>Favorite color? <input type="text" name="color" required></li>\n'
"<li>Favorite animal\u2192 "
'<input type="text" name="animal" required></li>\n'
'<li>Secret answer = <input type="text" name="answer" required></li>',
)
def test_initial_data(self):
# You can specify initial data for a field by using the 'initial' argument to a
# Field class. This initial data is displayed when a Form is rendered with *no*
# data. It is not displayed when a Form is rendered with any data (including an
# empty dictionary). Also, the initial value is *not* used if data for a
# particular required field isn't provided.
class UserRegistration(Form):
username = CharField(max_length=10, initial="django")
password = CharField(widget=PasswordInput)
# Here, we're not submitting any data, so the initial value will be displayed.)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""
<li>Username: <input type="text" name="username" value="django"
maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
""",
)
# Here, we're submitting data, so the initial value will *not* be displayed.
p = UserRegistration({}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" aria-invalid="true"
required></li><li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" aria-invalid="true" required></li>""",
)
p = UserRegistration({"username": ""}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" aria-invalid="true"
required></li><li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" aria-invalid="true" required></li>""",
)
p = UserRegistration({"username": "foo"}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""
<li>Username: <input type="text" name="username" value="foo" maxlength="10"
required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" aria-invalid="true"
required></li>
""",
)
# An 'initial' value is *not* used as a fallback if data is not
# provided. In this example, we don't provide a value for 'username',
# and the form raises a validation error rather than using the initial
# value for 'username'.
p = UserRegistration({"password": "secret"})
self.assertEqual(p.errors["username"], ["This field is required."])
self.assertFalse(p.is_valid())
def test_dynamic_initial_data(self):
# The previous technique dealt with "hard-coded" initial data, but it's also
# possible to specify initial data after you've already created the Form class
# (i.e., at runtime). Use the 'initial' parameter to the Form constructor. This
# should be a dictionary containing initial values for one or more fields in the
# form, keyed by field name.
class UserRegistration(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
# Here, we're not submitting any data, so the initial value will be displayed.)
p = UserRegistration(initial={"username": "django"}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""
<li>Username: <input type="text" name="username" value="django"
maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
""",
)
p = UserRegistration(initial={"username": "stephane"}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""
<li>Username: <input type="text" name="username" value="stephane"
maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
""",
)
# The 'initial' parameter is meaningless if you pass data.
p = UserRegistration({}, initial={"username": "django"}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" aria-invalid="true"
required></li><li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" aria-invalid="true" required></li>""",
)
p = UserRegistration(
{"username": ""}, initial={"username": "django"}, auto_id=False
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" aria-invalid="true"
required></li><li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" aria-invalid="true" required></li>""",
)
p = UserRegistration(
{"username": "foo"}, initial={"username": "django"}, auto_id=False
)
self.assertHTMLEqual(
p.as_ul(),
"""
<li>Username: <input type="text" name="username" value="foo" maxlength="10"
required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" aria-invalid="true"
required></li>
""",
)
# A dynamic 'initial' value is *not* used as a fallback if data is not provided.
# In this example, we don't provide a value for 'username', and the
# form raises a validation error rather than using the initial value
# for 'username'.
p = UserRegistration({"password": "secret"}, initial={"username": "django"})
self.assertEqual(p.errors["username"], ["This field is required."])
self.assertFalse(p.is_valid())
# If a Form defines 'initial' *and* 'initial' is passed as a parameter
# to Form(), then the latter will get precedence.
class UserRegistration(Form):
username = CharField(max_length=10, initial="django")
password = CharField(widget=PasswordInput)
p = UserRegistration(initial={"username": "babik"}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""
<li>Username: <input type="text" name="username" value="babik"
maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
""",
)
def test_callable_initial_data(self):
# The previous technique dealt with raw values as initial data, but it's also
# possible to specify callable data.
class UserRegistration(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
options = MultipleChoiceField(
choices=[("f", "foo"), ("b", "bar"), ("w", "whiz")]
)
# We need to define functions that get called later.)
def initial_django():
return "django"
def initial_stephane():
return "stephane"
def initial_options():
return ["f", "b"]
def initial_other_options():
return ["b", "w"]
# Here, we're not submitting any data, so the initial value will be displayed.)
p = UserRegistration(
initial={"username": initial_django, "options": initial_options},
auto_id=False,
)
self.assertHTMLEqual(
p.as_ul(),
"""
<li>Username: <input type="text" name="username" value="django"
maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
<li>Options: <select multiple name="options" required>
<option value="f" selected>foo</option>
<option value="b" selected>bar</option>
<option value="w">whiz</option>
</select></li>
""",
)
# The 'initial' parameter is meaningless if you pass data.
p = UserRegistration(
{},
initial={"username": initial_django, "options": initial_options},
auto_id=False,
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" aria-invalid="true"
required></li><li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" aria-invalid="true"
required></li><li><ul class="errorlist"><li>This field is required.</li></ul>
Options: <select multiple name="options" aria-invalid="true" required>
<option value="f">foo</option>
<option value="b">bar</option>
<option value="w">whiz</option>
</select></li>""",
)
p = UserRegistration(
{"username": ""}, initial={"username": initial_django}, auto_id=False
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" aria-invalid="true"
required></li><li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" aria-invalid="true" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Options: <select multiple name="options" aria-invalid="true" required>
<option value="f">foo</option>
<option value="b">bar</option>
<option value="w">whiz</option>
</select></li>""",
)
p = UserRegistration(
{"username": "foo", "options": ["f", "b"]},
initial={"username": initial_django},
auto_id=False,
)
self.assertHTMLEqual(
p.as_ul(),
"""
<li>Username: <input type="text" name="username" value="foo" maxlength="10"
required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" aria-invalid="true"
required></li><li>Options: <select multiple name="options" required>
<option value="f" selected>foo</option>
<option value="b" selected>bar</option>
<option value="w">whiz</option>
</select></li>
""",
)
# A callable 'initial' value is *not* used as a fallback if data is not
# provided. In this example, we don't provide a value for 'username',
# and the form raises a validation error rather than using the initial
# value for 'username'.
p = UserRegistration(
{"password": "secret"},
initial={"username": initial_django, "options": initial_options},
)
self.assertEqual(p.errors["username"], ["This field is required."])
self.assertFalse(p.is_valid())
# If a Form defines 'initial' *and* 'initial' is passed as a parameter
# to Form(), then the latter will get precedence.
class UserRegistration(Form):
username = CharField(max_length=10, initial=initial_django)
password = CharField(widget=PasswordInput)
options = MultipleChoiceField(
choices=[("f", "foo"), ("b", "bar"), ("w", "whiz")],
initial=initial_other_options,
)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""
<li>Username: <input type="text" name="username" value="django"
maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
<li>Options: <select multiple name="options" required>
<option value="f">foo</option>
<option value="b" selected>bar</option>
<option value="w" selected>whiz</option>
</select></li>
""",
)
p = UserRegistration(
initial={"username": initial_stephane, "options": initial_options},
auto_id=False,
)
self.assertHTMLEqual(
p.as_ul(),
"""
<li>Username: <input type="text" name="username" value="stephane"
maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
<li>Options: <select multiple name="options" required>
<option value="f" selected>foo</option>
<option value="b" selected>bar</option>
<option value="w">whiz</option>
</select></li>
""",
)
def test_get_initial_for_field(self):
now = datetime.datetime(2006, 10, 25, 14, 30, 45, 123456)
class PersonForm(Form):
first_name = CharField(initial="John")
last_name = CharField(initial="Doe")
age = IntegerField()
occupation = CharField(initial=lambda: "Unknown")
dt_fixed = DateTimeField(initial=now)
dt_callable = DateTimeField(initial=lambda: now)
form = PersonForm(initial={"first_name": "Jane"})
cases = [
("age", None),
("last_name", "Doe"),
# Form.initial overrides Field.initial.
("first_name", "Jane"),
# Callables are evaluated.
("occupation", "Unknown"),
# Microseconds are removed from datetimes.
("dt_fixed", datetime.datetime(2006, 10, 25, 14, 30, 45)),
("dt_callable", datetime.datetime(2006, 10, 25, 14, 30, 45)),
]
for field_name, expected in cases:
with self.subTest(field_name=field_name):
field = form.fields[field_name]
actual = form.get_initial_for_field(field, field_name)
self.assertEqual(actual, expected)
def test_changed_data(self):
class Person(Form):
first_name = CharField(initial="Hans")
last_name = CharField(initial="Greatel")
birthday = DateField(initial=datetime.date(1974, 8, 16))
p = Person(
data={"first_name": "Hans", "last_name": "Scrmbl", "birthday": "1974-08-16"}
)
self.assertTrue(p.is_valid())
self.assertNotIn("first_name", p.changed_data)
self.assertIn("last_name", p.changed_data)
self.assertNotIn("birthday", p.changed_data)
# A field raising ValidationError is always in changed_data
class PedanticField(Field):
def to_python(self, value):
raise ValidationError("Whatever")
class Person2(Person):
pedantic = PedanticField(initial="whatever", show_hidden_initial=True)
p = Person2(
data={
"first_name": "Hans",
"last_name": "Scrmbl",
"birthday": "1974-08-16",
"initial-pedantic": "whatever",
}
)
self.assertFalse(p.is_valid())
self.assertIn("pedantic", p.changed_data)
def test_boundfield_values(self):
# It's possible to get to the value which would be used for rendering
# the widget for a field by using the BoundField's value method.
class UserRegistration(Form):
username = CharField(max_length=10, initial="djangonaut")
password = CharField(widget=PasswordInput)
unbound = UserRegistration()
bound = UserRegistration({"password": "foo"})
self.assertIsNone(bound["username"].value())
self.assertEqual(unbound["username"].value(), "djangonaut")
self.assertEqual(bound["password"].value(), "foo")
self.assertIsNone(unbound["password"].value())
def test_boundfield_initial_called_once(self):
"""
Multiple calls to BoundField().value() in an unbound form should return
the same result each time (#24391).
"""
class MyForm(Form):
name = CharField(max_length=10, initial=uuid.uuid4)
form = MyForm()
name = form["name"]
self.assertEqual(name.value(), name.value())
# BoundField is also cached
self.assertIs(form["name"], name)
def test_boundfield_value_disabled_callable_initial(self):
class PersonForm(Form):
name = CharField(initial=lambda: "John Doe", disabled=True)
# Without form data.
form = PersonForm()
self.assertEqual(form["name"].value(), "John Doe")
# With form data. As the field is disabled, the value should not be
# affected by the form data.
form = PersonForm({})
self.assertEqual(form["name"].value(), "John Doe")
def test_custom_boundfield(self):
class CustomField(CharField):
def get_bound_field(self, form, name):
return (form, name)
class SampleForm(Form):
name = CustomField()
f = SampleForm()
self.assertEqual(f["name"], (f, "name"))
def test_initial_datetime_values(self):
now = datetime.datetime.now()
# Nix microseconds (since they should be ignored). #22502
now_no_ms = now.replace(microsecond=0)
if now == now_no_ms:
now = now.replace(microsecond=1)
def delayed_now():
return now
def delayed_now_time():
return now.time()
class HiddenInputWithoutMicrosec(HiddenInput):
supports_microseconds = False
class TextInputWithoutMicrosec(TextInput):
supports_microseconds = False
class DateTimeForm(Form):
# Test a non-callable.
fixed = DateTimeField(initial=now)
auto_timestamp = DateTimeField(initial=delayed_now)
auto_time_only = TimeField(initial=delayed_now_time)
supports_microseconds = DateTimeField(initial=delayed_now, widget=TextInput)
hi_default_microsec = DateTimeField(initial=delayed_now, widget=HiddenInput)
hi_without_microsec = DateTimeField(
initial=delayed_now, widget=HiddenInputWithoutMicrosec
)
ti_without_microsec = DateTimeField(
initial=delayed_now, widget=TextInputWithoutMicrosec
)
unbound = DateTimeForm()
cases = [
("fixed", now_no_ms),
("auto_timestamp", now_no_ms),
("auto_time_only", now_no_ms.time()),
("supports_microseconds", now),
("hi_default_microsec", now),
("hi_without_microsec", now_no_ms),
("ti_without_microsec", now_no_ms),
]
for field_name, expected in cases:
with self.subTest(field_name=field_name):
actual = unbound[field_name].value()
self.assertEqual(actual, expected)
# Also check get_initial_for_field().
field = unbound.fields[field_name]
actual = unbound.get_initial_for_field(field, field_name)
self.assertEqual(actual, expected)
def get_datetime_form_with_callable_initial(self, disabled, microseconds=0):
class FakeTime:
def __init__(self):
self.elapsed_seconds = 0
def now(self):
self.elapsed_seconds += 1
return datetime.datetime(
2006,
10,
25,
14,
30,
45 + self.elapsed_seconds,
microseconds,
)
class DateTimeForm(Form):
dt = DateTimeField(initial=FakeTime().now, disabled=disabled)
return DateTimeForm({})
def test_datetime_clean_disabled_callable_initial_microseconds(self):
"""
Cleaning a form with a disabled DateTimeField and callable initial
removes microseconds.
"""
form = self.get_datetime_form_with_callable_initial(
disabled=True,
microseconds=123456,
)
self.assertEqual(form.errors, {})
self.assertEqual(
form.cleaned_data,
{
"dt": datetime.datetime(2006, 10, 25, 14, 30, 46),
},
)
def test_datetime_clean_disabled_callable_initial_bound_field(self):
"""
The cleaned value for a form with a disabled DateTimeField and callable
initial matches the bound field's cached initial value.
"""
form = self.get_datetime_form_with_callable_initial(disabled=True)
self.assertEqual(form.errors, {})
cleaned = form.cleaned_data["dt"]
self.assertEqual(cleaned, datetime.datetime(2006, 10, 25, 14, 30, 46))
bf = form["dt"]
self.assertEqual(cleaned, bf.initial)
def test_datetime_changed_data_callable_with_microseconds(self):
class DateTimeForm(Form):
dt = DateTimeField(
initial=lambda: datetime.datetime(2006, 10, 25, 14, 30, 45, 123456),
disabled=True,
)
form = DateTimeForm({"dt": "2006-10-25 14:30:45"})
self.assertEqual(form.changed_data, [])
def test_help_text(self):
# You can specify descriptive text for a field by using the 'help_text'
# argument.
class UserRegistration(Form):
username = CharField(max_length=10, help_text="e.g., user@example.com")
password = CharField(
widget=PasswordInput, help_text="Wählen Sie mit Bedacht."
)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required>
<span class="helptext">e.g., user@example.com</span></li>
<li>Password: <input type="password" name="password" required>
<span class="helptext">Wählen Sie mit Bedacht.</span></li>""",
)
self.assertHTMLEqual(
p.as_p(),
"""<p>Username: <input type="text" name="username" maxlength="10" required>
<span class="helptext">e.g., user@example.com</span></p>
<p>Password: <input type="password" name="password" required>
<span class="helptext">Wählen Sie mit Bedacht.</span></p>""",
)
self.assertHTMLEqual(
p.as_table(),
"""
<tr><th>Username:</th><td>
<input type="text" name="username" maxlength="10" required><br>
<span class="helptext">e.g., user@example.com</span></td></tr>
<tr><th>Password:</th><td><input type="password" name="password" required>
<br>
<span class="helptext">Wählen Sie mit Bedacht.</span></td></tr>""",
)
self.assertHTMLEqual(
p.as_div(),
'<div>Username: <div class="helptext">e.g., user@example.com</div>'
'<input type="text" name="username" maxlength="10" required></div>'
'<div>Password: <div class="helptext">Wählen Sie mit Bedacht.</div>'
'<input type="password" name="password" required></div>',
)
# The help text is displayed whether or not data is provided for the form.
p = UserRegistration({"username": "foo"}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
'<li>Username: <input type="text" name="username" value="foo" '
'maxlength="10" required>'
'<span class="helptext">e.g., user@example.com</span></li>'
'<li><ul class="errorlist"><li>This field is required.</li></ul>'
'Password: <input type="password" name="password" aria-invalid="true" '
'required><span class="helptext">Wählen Sie mit Bedacht.</span></li>',
)
# help_text is not displayed for hidden fields. It can be used for documentation
# purposes, though.
class UserRegistration(Form):
username = CharField(max_length=10, help_text="e.g., user@example.com")
password = CharField(widget=PasswordInput)
next = CharField(
widget=HiddenInput, initial="/", help_text="Redirect destination"
)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required>
<span class="helptext">e.g., user@example.com</span></li>
<li>Password: <input type="password" name="password" required>
<input type="hidden" name="next" value="/"></li>""",
)
def test_help_text_html_safe(self):
"""help_text should not be escaped."""
class UserRegistration(Form):
username = CharField(max_length=10, help_text="e.g., user@example.com")
password = CharField(
widget=PasswordInput,
help_text="Help text is <strong>escaped</strong>.",
)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
'<li>Username: <input type="text" name="username" maxlength="10" required>'
'<span class="helptext">e.g., user@example.com</span></li>'
'<li>Password: <input type="password" name="password" required>'
'<span class="helptext">Help text is <strong>escaped</strong>.</span></li>',
)
self.assertHTMLEqual(
p.as_p(),
'<p>Username: <input type="text" name="username" maxlength="10" required>'
'<span class="helptext">e.g., user@example.com</span></p>'
'<p>Password: <input type="password" name="password" required>'
'<span class="helptext">Help text is <strong>escaped</strong>.</span></p>',
)
self.assertHTMLEqual(
p.as_table(),
"<tr><th>Username:</th><td>"
'<input type="text" name="username" maxlength="10" required><br>'
'<span class="helptext">e.g., user@example.com</span></td></tr>'
"<tr><th>Password:</th><td>"
'<input type="password" name="password" required><br>'
'<span class="helptext">Help text is <strong>escaped</strong>.</span>'
"</td></tr>",
)
def test_widget_attrs_custom_aria_describedby(self):
# aria-describedby provided to the widget overrides the default.
class UserRegistration(Form):
username = CharField(
max_length=255,
help_text="e.g., user@example.com",
widget=TextInput(attrs={"aria-describedby": "custom-description"}),
)
password = CharField(
widget=PasswordInput, help_text="Wählen Sie mit Bedacht."
)
p = UserRegistration()
self.assertHTMLEqual(
p.as_div(),
'<div><label for="id_username">Username:</label>'
'<div class="helptext" id="id_username_helptext">e.g., user@example.com'
'</div><input type="text" name="username" maxlength="255" required '
'aria-describedby="custom-description" id="id_username">'
"</div><div>"
'<label for="id_password">Password:</label>'
'<div class="helptext" id="id_password_helptext">Wählen Sie mit Bedacht.'
'</div><input type="password" name="password" required '
'aria-describedby="id_password_helptext" id="id_password"></div>',
)
self.assertHTMLEqual(
p.as_ul(),
'<li><label for="id_username">Username:</label><input type="text" '
'name="username" maxlength="255" required '
'aria-describedby="custom-description" id="id_username">'
'<span class="helptext" id="id_username_helptext">e.g., user@example.com'
"</span></li><li>"
'<label for="id_password">Password:</label>'
'<input type="password" name="password" required '
'aria-describedby="id_password_helptext" id="id_password">'
'<span class="helptext" id="id_password_helptext">Wählen Sie mit Bedacht.'
"</span></li>",
)
self.assertHTMLEqual(
p.as_p(),
'<p><label for="id_username">Username:</label><input type="text" '
'name="username" maxlength="255" required '
'aria-describedby="custom-description" id="id_username">'
'<span class="helptext" id="id_username_helptext">e.g., user@example.com'
"</span></p><p>"
'<label for="id_password">Password:</label>'
'<input type="password" name="password" required '
'aria-describedby="id_password_helptext" id="id_password">'
'<span class="helptext" id="id_password_helptext">Wählen Sie mit Bedacht.'
"</span></p>",
)
self.assertHTMLEqual(
p.as_table(),
'<tr><th><label for="id_username">Username:</label></th><td>'
'<input type="text" name="username" maxlength="255" required '
'aria-describedby="custom-description" id="id_username"><br>'
'<span class="helptext" id="id_username_helptext">e.g., user@example.com'
"</span></td></tr><tr><th>"
'<label for="id_password">Password:</label></th><td>'
'<input type="password" name="password" required '
'aria-describedby="id_password_helptext" id="id_password"><br>'
'<span class="helptext" id="id_password_helptext">Wählen Sie mit Bedacht.'
"</span></td></tr>",
)
def test_aria_describedby_custom_widget_id(self):
class UserRegistration(Form):
username = CharField(
max_length=255,
help_text="e.g., user@example.com",
widget=TextInput(attrs={"id": "custom-id"}),
)
f = UserRegistration()
self.assertHTMLEqual(
str(f),
'<div><label for="custom-id">Username:</label>'
'<div class="helptext" id="id_username_helptext">e.g., user@example.com'
'</div><input type="text" name="username" id="custom-id" maxlength="255" '
'required aria-describedby="id_username_helptext"></div>',
)
def test_fieldset_aria_describedby(self):
class FieldsetForm(Form):
checkbox = MultipleChoiceField(
choices=[("a", "A"), ("b", "B")],
widget=CheckboxSelectMultiple,
help_text="Checkbox help text",
)
radio = MultipleChoiceField(
choices=[("a", "A"), ("b", "B")],
widget=RadioSelect,
help_text="Radio help text",
)
datetime = SplitDateTimeField(help_text="Enter Date and Time")
f = FieldsetForm()
self.assertHTMLEqual(
str(f),
'<div><fieldset aria-describedby="id_checkbox_helptext">'
"<legend>Checkbox:</legend>"
'<div class="helptext" id="id_checkbox_helptext">Checkbox help text</div>'
'<div id="id_checkbox"><div>'
'<label for="id_checkbox_0"><input type="checkbox" name="checkbox" '
'value="a" id="id_checkbox_0" /> A</label>'
"</div><div>"
'<label for="id_checkbox_1"><input type="checkbox" name="checkbox" '
'value="b" id="id_checkbox_1" /> B</label>'
"</div></div></fieldset></div>"
'<div><fieldset aria-describedby="id_radio_helptext">'
"<legend>Radio:</legend>"
'<div class="helptext" id="id_radio_helptext">Radio help text</div>'
'<div id="id_radio"><div>'
'<label for="id_radio_0"><input type="radio" name="radio" value="a" '
'required id="id_radio_0" />A</label>'
"</div><div>"
'<label for="id_radio_1"><input type="radio" name="radio" value="b" '
'required id="id_radio_1" /> B</label>'
"</div></div></fieldset></div>"
'<div><fieldset aria-describedby="id_datetime_helptext">'
"<legend>Datetime:</legend>"
'<div class="helptext" id="id_datetime_helptext">Enter Date and Time</div>'
'<input type="text" name="datetime_0" required id="id_datetime_0" />'
'<input type="text" name="datetime_1" required id="id_datetime_1" />'
"</fieldset></div>",
)
f = FieldsetForm(auto_id=False)
# aria-describedby is not included.
self.assertIn("<fieldset>", str(f))
self.assertIn('<div class="helptext">', str(f))
f = FieldsetForm(auto_id="custom_%s")
# aria-describedby uses custom auto_id.
self.assertIn('fieldset aria-describedby="custom_checkbox_helptext"', str(f))
self.assertIn('<div class="helptext" id="custom_checkbox_helptext">', str(f))
def test_fieldset_custom_aria_describedby(self):
# aria-describedby set on widget results in aria-describedby being
# added to widget and not the <fieldset>.
class FieldsetForm(Form):
checkbox = MultipleChoiceField(
choices=[("a", "A"), ("b", "B")],
widget=CheckboxSelectMultiple(attrs={"aria-describedby": "custom-id"}),
help_text="Checkbox help text",
)
f = FieldsetForm()
self.assertHTMLEqual(
str(f),
"<div><fieldset><legend>Checkbox:</legend>"
'<div class="helptext" id="id_checkbox_helptext">Checkbox help text</div>'
'<div id="id_checkbox"><div>'
'<label for="id_checkbox_0"><input type="checkbox" name="checkbox" '
'value="a" aria-describedby="custom-id" id="id_checkbox_0" />A</label>'
"</div><div>"
'<label for="id_checkbox_1"><input type="checkbox" name="checkbox" '
'value="b" aria-describedby="custom-id" id="id_checkbox_1" />B</label>'
"</div></div></fieldset></div>",
)
def test_as_widget_custom_aria_describedby(self):
class FoodForm(Form):
intl_name = CharField(help_text="The food's international name.")
form = FoodForm({"intl_name": "Rendang"})
self.assertHTMLEqual(
form["intl_name"].as_widget(attrs={"aria-describedby": "some_custom_id"}),
'<input type="text" name="intl_name" value="Rendang"'
'aria-describedby="some_custom_id" required id="id_intl_name">',
)
def test_subclassing_forms(self):
# You can subclass a Form to add fields. The resulting form subclass will have
# all of the fields of the parent Form, plus whichever fields you define in the
# subclass.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
class Musician(Person):
instrument = CharField()
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>""",
)
m = Musician(auto_id=False)
self.assertHTMLEqual(
m.as_ul(),
"""<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>
<li>Instrument: <input type="text" name="instrument" required></li>""",
)
# Yes, you can subclass multiple forms. The fields are added in the order in
# which the parent classes are listed.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
class Instrument(Form):
instrument = CharField()
class Beatle(Person, Instrument):
haircut_type = CharField()
b = Beatle(auto_id=False)
self.assertHTMLEqual(
b.as_ul(),
"""<li>Instrument: <input type="text" name="instrument" required></li>
<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>
<li>Haircut type: <input type="text" name="haircut_type" required></li>""",
)
def test_forms_with_prefixes(self):
# Sometimes it's necessary to have multiple forms display on the same
# HTML page, or multiple copies of the same form. We can accomplish
# this with form prefixes. Pass the keyword argument 'prefix' to the
# Form constructor to use this feature. This value will be prepended to
# each HTML form field name. One way to think about this is "namespaces
# for HTML forms". Notice that in the data argument, each field's key
# has the prefix, in this case 'person1', prepended to the actual field
# name.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
data = {
"person1-first_name": "John",
"person1-last_name": "Lennon",
"person1-birthday": "1940-10-9",
}
p = Person(data, prefix="person1")
self.assertHTMLEqual(
p.as_ul(),
"""
<li><label for="id_person1-first_name">First name:</label>
<input type="text" name="person1-first_name" value="John"
id="id_person1-first_name" required></li>
<li><label for="id_person1-last_name">Last name:</label>
<input type="text" name="person1-last_name" value="Lennon"
id="id_person1-last_name" required></li>
<li><label for="id_person1-birthday">Birthday:</label>
<input type="text" name="person1-birthday" value="1940-10-9"
id="id_person1-birthday" required></li>
""",
)
self.assertHTMLEqual(
str(p["first_name"]),
'<input type="text" name="person1-first_name" value="John" '
'id="id_person1-first_name" required>',
)
self.assertHTMLEqual(
str(p["last_name"]),
'<input type="text" name="person1-last_name" value="Lennon" '
'id="id_person1-last_name" required>',
)
self.assertHTMLEqual(
str(p["birthday"]),
'<input type="text" name="person1-birthday" value="1940-10-9" '
'id="id_person1-birthday" required>',
)
self.assertEqual(p.errors, {})
self.assertTrue(p.is_valid())
self.assertEqual(p.cleaned_data["first_name"], "John")
self.assertEqual(p.cleaned_data["last_name"], "Lennon")
self.assertEqual(p.cleaned_data["birthday"], datetime.date(1940, 10, 9))
# Let's try submitting some bad data to make sure form.errors and field.errors
# work as expected.
data = {
"person1-first_name": "",
"person1-last_name": "",
"person1-birthday": "",
}
p = Person(data, prefix="person1")
self.assertEqual(p.errors["first_name"], ["This field is required."])
self.assertEqual(p.errors["last_name"], ["This field is required."])
self.assertEqual(p.errors["birthday"], ["This field is required."])
self.assertEqual(p["first_name"].errors, ["This field is required."])
# Accessing a nonexistent field.
with self.assertRaises(KeyError):
p["person1-first_name"].errors
# In this example, the data doesn't have a prefix, but the form requires it, so
# the form doesn't "see" the fields.
data = {"first_name": "John", "last_name": "Lennon", "birthday": "1940-10-9"}
p = Person(data, prefix="person1")
self.assertEqual(p.errors["first_name"], ["This field is required."])
self.assertEqual(p.errors["last_name"], ["This field is required."])
self.assertEqual(p.errors["birthday"], ["This field is required."])
# With prefixes, a single data dictionary can hold data for multiple instances
# of the same form.
data = {
"person1-first_name": "John",
"person1-last_name": "Lennon",
"person1-birthday": "1940-10-9",
"person2-first_name": "Jim",
"person2-last_name": "Morrison",
"person2-birthday": "1943-12-8",
}
p1 = Person(data, prefix="person1")
self.assertTrue(p1.is_valid())
self.assertEqual(p1.cleaned_data["first_name"], "John")
self.assertEqual(p1.cleaned_data["last_name"], "Lennon")
self.assertEqual(p1.cleaned_data["birthday"], datetime.date(1940, 10, 9))
p2 = Person(data, prefix="person2")
self.assertTrue(p2.is_valid())
self.assertEqual(p2.cleaned_data["first_name"], "Jim")
self.assertEqual(p2.cleaned_data["last_name"], "Morrison")
self.assertEqual(p2.cleaned_data["birthday"], datetime.date(1943, 12, 8))
# By default, forms append a hyphen between the prefix and the field name, but a
# form can alter that behavior by implementing the add_prefix() method. This
# method takes a field name and returns the prefixed field, according to
# self.prefix.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
def add_prefix(self, field_name):
return (
"%s-prefix-%s" % (self.prefix, field_name)
if self.prefix
else field_name
)
p = Person(prefix="foo")
self.assertHTMLEqual(
p.as_ul(),
"""
<li><label for="id_foo-prefix-first_name">First name:</label>
<input type="text" name="foo-prefix-first_name"
id="id_foo-prefix-first_name" required></li>
<li><label for="id_foo-prefix-last_name">Last name:</label>
<input type="text" name="foo-prefix-last_name" id="id_foo-prefix-last_name"
required></li>
<li><label for="id_foo-prefix-birthday">Birthday:</label>
<input type="text" name="foo-prefix-birthday" id="id_foo-prefix-birthday"
required></li>
""",
)
data = {
"foo-prefix-first_name": "John",
"foo-prefix-last_name": "Lennon",
"foo-prefix-birthday": "1940-10-9",
}
p = Person(data, prefix="foo")
self.assertTrue(p.is_valid())
self.assertEqual(p.cleaned_data["first_name"], "John")
self.assertEqual(p.cleaned_data["last_name"], "Lennon")
self.assertEqual(p.cleaned_data["birthday"], datetime.date(1940, 10, 9))
def test_class_prefix(self):
# Prefix can be also specified at the class level.
class Person(Form):
first_name = CharField()
prefix = "foo"
p = Person()
self.assertEqual(p.prefix, "foo")
p = Person(prefix="bar")
self.assertEqual(p.prefix, "bar")
def test_forms_with_null_boolean(self):
# NullBooleanField is a bit of a special case because its presentation (widget)
# is different than its data. This is handled transparently, though.
class Person(Form):
name = CharField()
is_cool = NullBooleanField()
p = Person({"name": "Joe"}, auto_id=False)
self.assertHTMLEqual(
str(p["is_cool"]),
"""<select name="is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select>""",
)
p = Person({"name": "Joe", "is_cool": "1"}, auto_id=False)
self.assertHTMLEqual(
str(p["is_cool"]),
"""<select name="is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select>""",
)
p = Person({"name": "Joe", "is_cool": "2"}, auto_id=False)
self.assertHTMLEqual(
str(p["is_cool"]),
"""<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true" selected>Yes</option>
<option value="false">No</option>
</select>""",
)
p = Person({"name": "Joe", "is_cool": "3"}, auto_id=False)
self.assertHTMLEqual(
str(p["is_cool"]),
"""<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true">Yes</option>
<option value="false" selected>No</option>
</select>""",
)
p = Person({"name": "Joe", "is_cool": True}, auto_id=False)
self.assertHTMLEqual(
str(p["is_cool"]),
"""<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true" selected>Yes</option>
<option value="false">No</option>
</select>""",
)
p = Person({"name": "Joe", "is_cool": False}, auto_id=False)
self.assertHTMLEqual(
str(p["is_cool"]),
"""<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true">Yes</option>
<option value="false" selected>No</option>
</select>""",
)
p = Person({"name": "Joe", "is_cool": "unknown"}, auto_id=False)
self.assertHTMLEqual(
str(p["is_cool"]),
"""<select name="is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select>""",
)
p = Person({"name": "Joe", "is_cool": "true"}, auto_id=False)
self.assertHTMLEqual(
str(p["is_cool"]),
"""<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true" selected>Yes</option>
<option value="false">No</option>
</select>""",
)
p = Person({"name": "Joe", "is_cool": "false"}, auto_id=False)
self.assertHTMLEqual(
str(p["is_cool"]),
"""<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true">Yes</option>
<option value="false" selected>No</option>
</select>""",
)
def test_forms_with_file_fields(self):
# FileFields are a special case because they take their data from the
# request.FILES, not request.POST.
class FileForm(Form):
file1 = FileField()
f = FileForm(auto_id=False)
self.assertHTMLEqual(
f.as_table(),
"<tr><th>File1:</th><td>"
'<input type="file" name="file1" required></td></tr>',
)
f = FileForm(data={}, files={}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
"<tr><th>File1:</th><td>"
'<ul class="errorlist"><li>This field is required.</li></ul>'
'<input type="file" name="file1" aria-invalid="true" required></td></tr>',
)
f = FileForm(
data={}, files={"file1": SimpleUploadedFile("name", b"")}, auto_id=False
)
self.assertHTMLEqual(
f.as_table(),
"<tr><th>File1:</th><td>"
'<ul class="errorlist"><li>The submitted file is empty.</li></ul>'
'<input type="file" name="file1" aria-invalid="true" required></td></tr>',
)
f = FileForm(
data={}, files={"file1": "something that is not a file"}, auto_id=False
)
self.assertHTMLEqual(
f.as_table(),
"<tr><th>File1:</th><td>"
'<ul class="errorlist"><li>No file was submitted. Check the '
"encoding type on the form.</li></ul>"
'<input type="file" name="file1" aria-invalid="true" required></td></tr>',
)
f = FileForm(
data={},
files={"file1": SimpleUploadedFile("name", b"some content")},
auto_id=False,
)
self.assertHTMLEqual(
f.as_table(),
"<tr><th>File1:</th><td>"
'<input type="file" name="file1" required></td></tr>',
)
self.assertTrue(f.is_valid())
file1 = SimpleUploadedFile(
"我隻氣墊船裝滿晒鱔.txt", "मेरी मँडराने वाली नाव सर्पमीनों से भरी ह".encode()
)
f = FileForm(data={}, files={"file1": file1}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
"<tr><th>File1:</th><td>"
'<input type="file" name="file1" required></td></tr>',
)
# A required file field with initial data should not contain the
# required HTML attribute. The file input is left blank by the user to
# keep the existing, initial value.
f = FileForm(initial={"file1": "resume.txt"}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1"></td></tr>',
)
def test_filefield_initial_callable(self):
class FileForm(Form):
file1 = FileField(initial=lambda: "resume.txt")
f = FileForm({})
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data["file1"], "resume.txt")
def test_filefield_with_fileinput_required(self):
class FileForm(Form):
file1 = FileField(widget=FileInput)
f = FileForm(auto_id=False)
self.assertHTMLEqual(
f.as_table(),
"<tr><th>File1:</th><td>"
'<input type="file" name="file1" required></td></tr>',
)
# A required file field with initial data doesn't contain the required
# HTML attribute. The file input is left blank by the user to keep the
# existing, initial value.
f = FileForm(initial={"file1": "resume.txt"}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1"></td></tr>',
)
def test_empty_permitted(self):
# Sometimes (pretty much in formsets) we want to allow a form to pass validation
# if it is completely empty. We can accomplish this by using the empty_permitted
# argument to a form constructor.
class SongForm(Form):
artist = CharField()
name = CharField()
# First let's show what happens id empty_permitted=False (the default):
data = {"artist": "", "song": ""}
form = SongForm(data, empty_permitted=False)
self.assertFalse(form.is_valid())
self.assertEqual(
form.errors,
{
"name": ["This field is required."],
"artist": ["This field is required."],
},
)
self.assertEqual(form.cleaned_data, {})
# Now let's show what happens when empty_permitted=True and the form is empty.
form = SongForm(data, empty_permitted=True, use_required_attribute=False)
self.assertTrue(form.is_valid())
self.assertEqual(form.errors, {})
self.assertEqual(form.cleaned_data, {})
# But if we fill in data for one of the fields, the form is no longer empty and
# the whole thing must pass validation.
data = {"artist": "The Doors", "song": ""}
form = SongForm(data, empty_permitted=False)
self.assertFalse(form.is_valid())
self.assertEqual(form.errors, {"name": ["This field is required."]})
self.assertEqual(form.cleaned_data, {"artist": "The Doors"})
# If a field is not given in the data then None is returned for its data. Lets
# make sure that when checking for empty_permitted that None is treated
# accordingly.
data = {"artist": None, "song": ""}
form = SongForm(data, empty_permitted=True, use_required_attribute=False)
self.assertTrue(form.is_valid())
# However, we *really* need to be sure we are checking for None as any data in
# initial that returns False on a boolean call needs to be treated literally.
class PriceForm(Form):
amount = FloatField()
qty = IntegerField()
data = {"amount": "0.0", "qty": ""}
form = PriceForm(
data,
initial={"amount": 0.0},
empty_permitted=True,
use_required_attribute=False,
)
self.assertTrue(form.is_valid())
def test_empty_permitted_and_use_required_attribute(self):
msg = (
"The empty_permitted and use_required_attribute arguments may not "
"both be True."
)
with self.assertRaisesMessage(ValueError, msg):
Person(empty_permitted=True, use_required_attribute=True)
def test_extracting_hidden_and_visible(self):
class SongForm(Form):
token = CharField(widget=HiddenInput)
artist = CharField()
name = CharField()
form = SongForm()
self.assertEqual([f.name for f in form.hidden_fields()], ["token"])
self.assertEqual([f.name for f in form.visible_fields()], ["artist", "name"])
def test_hidden_initial_gets_id(self):
class MyForm(Form):
field1 = CharField(max_length=50, show_hidden_initial=True)
self.assertHTMLEqual(
MyForm().as_table(),
'<tr><th><label for="id_field1">Field1:</label></th><td>'
'<input id="id_field1" type="text" name="field1" maxlength="50" required>'
'<input type="hidden" name="initial-field1" id="initial-id_field1">'
"</td></tr>",
)
def test_error_html_required_html_classes(self):
class Person(Form):
name = CharField()
is_cool = NullBooleanField()
email = EmailField(required=False)
age = IntegerField()
p = Person({})
p.error_css_class = "error"
p.required_css_class = "required"
self.assertHTMLEqual(
p.as_ul(),
"""
<li class="required error"><ul class="errorlist">
<li>This field is required.</li></ul>
<label class="required" for="id_name">Name:</label>
<input type="text" name="name" id="id_name" aria-invalid="true" required>
</li><li class="required">
<label class="required" for="id_is_cool">Is cool:</label>
<select name="is_cool" id="id_is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select></li>
<li><label for="id_email">Email:</label>
<input type="email" name="email" id="id_email" maxlength="320"></li>
<li class="required error"><ul class="errorlist">
<li>This field is required.</li></ul>
<label class="required" for="id_age">Age:</label>
<input type="number" name="age" id="id_age" aria-invalid="true" required>
</li>""",
)
self.assertHTMLEqual(
p.as_p(),
"""
<ul class="errorlist"><li>This field is required.</li></ul>
<p class="required error">
<label class="required" for="id_name">Name:</label>
<input type="text" name="name" id="id_name" aria-invalid="true" required>
</p><p class="required">
<label class="required" for="id_is_cool">Is cool:</label>
<select name="is_cool" id="id_is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select></p>
<p><label for="id_email">Email:</label>
<input type="email" name="email" id="id_email" maxlength="320"></p>
<ul class="errorlist"><li>This field is required.</li></ul>
<p class="required error"><label class="required" for="id_age">Age:</label>
<input type="number" name="age" id="id_age" aria-invalid="true" required>
</p>""",
)
self.assertHTMLEqual(
p.as_table(),
"""<tr class="required error">
<th><label class="required" for="id_name">Name:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="name" id="id_name" aria-invalid="true" required></td></tr>
<tr class="required"><th><label class="required" for="id_is_cool">Is cool:</label></th>
<td><select name="is_cool" id="id_is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select></td></tr>
<tr><th><label for="id_email">Email:</label></th><td>
<input type="email" name="email" id="id_email" maxlength="320"></td></tr>
<tr class="required error"><th><label class="required" for="id_age">Age:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="number" name="age" id="id_age" aria-invalid="true" required></td></tr>""",
)
self.assertHTMLEqual(
p.as_div(),
'<div class="required error"><label for="id_name" class="required">Name:'
'</label><ul class="errorlist"><li>This field is required.</li></ul>'
'<input type="text" name="name" required id="id_name" '
'aria-invalid="true" /></div>'
'<div class="required"><label for="id_is_cool" class="required">Is cool:'
'</label><select name="is_cool" id="id_is_cool">'
'<option value="unknown" selected>Unknown</option>'
'<option value="true">Yes</option><option value="false">No</option>'
'</select></div><div><label for="id_email">Email:</label>'
'<input type="email" name="email" id="id_email" maxlength="320"/></div>'
'<div class="required error"><label for="id_age" class="required">Age:'
'</label><ul class="errorlist"><li>This field is required.</li></ul>'
'<input type="number" name="age" required id="id_age" '
'aria-invalid="true" /></div>',
)
def test_label_has_required_css_class(self):
"""
required_css_class is added to label_tag() and legend_tag() of required
fields.
"""
class SomeForm(Form):
required_css_class = "required"
field = CharField(max_length=10)
field2 = IntegerField(required=False)
f = SomeForm({"field": "test"})
self.assertHTMLEqual(
f["field"].label_tag(),
'<label for="id_field" class="required">Field:</label>',
)
self.assertHTMLEqual(
f["field"].legend_tag(),
'<legend for="id_field" class="required">Field:</legend>',
)
self.assertHTMLEqual(
f["field"].label_tag(attrs={"class": "foo"}),
'<label for="id_field" class="foo required">Field:</label>',
)
self.assertHTMLEqual(
f["field"].legend_tag(attrs={"class": "foo"}),
'<legend for="id_field" class="foo required">Field:</legend>',
)
self.assertHTMLEqual(
f["field2"].label_tag(), '<label for="id_field2">Field2:</label>'
)
self.assertHTMLEqual(
f["field2"].legend_tag(),
'<legend for="id_field2">Field2:</legend>',
)
def test_label_split_datetime_not_displayed(self):
class EventForm(Form):
happened_at = SplitDateTimeField(widget=SplitHiddenDateTimeWidget)
form = EventForm()
self.assertHTMLEqual(
form.as_ul(),
'<input type="hidden" name="happened_at_0" id="id_happened_at_0">'
'<input type="hidden" name="happened_at_1" id="id_happened_at_1">',
)
def test_multivalue_field_validation(self):
def bad_names(value):
if value == "bad value":
raise ValidationError("bad value not allowed")
class NameField(MultiValueField):
def __init__(self, fields=(), *args, **kwargs):
fields = (
CharField(label="First name", max_length=10),
CharField(label="Last name", max_length=10),
)
super().__init__(fields=fields, *args, **kwargs)
def compress(self, data_list):
return " ".join(data_list)
class NameForm(Form):
name = NameField(validators=[bad_names])
form = NameForm(data={"name": ["bad", "value"]})
form.full_clean()
self.assertFalse(form.is_valid())
self.assertEqual(form.errors, {"name": ["bad value not allowed"]})
form = NameForm(data={"name": ["should be overly", "long for the field names"]})
self.assertFalse(form.is_valid())
self.assertEqual(
form.errors,
{
"name": [
"Ensure this value has at most 10 characters (it has 16).",
"Ensure this value has at most 10 characters (it has 24).",
],
},
)
form = NameForm(data={"name": ["fname", "lname"]})
self.assertTrue(form.is_valid())
self.assertEqual(form.cleaned_data, {"name": "fname lname"})
def test_multivalue_deep_copy(self):
"""
#19298 -- MultiValueField needs to override the default as it needs
to deep-copy subfields:
"""
class ChoicesField(MultiValueField):
def __init__(self, fields=(), *args, **kwargs):
fields = (
ChoiceField(label="Rank", choices=((1, 1), (2, 2))),
CharField(label="Name", max_length=10),
)
super().__init__(fields=fields, *args, **kwargs)
field = ChoicesField()
field2 = copy.deepcopy(field)
self.assertIsInstance(field2, ChoicesField)
self.assertIsNot(field2.fields, field.fields)
self.assertIsNot(field2.fields[0].choices, field.fields[0].choices)
def test_multivalue_initial_data(self):
"""
#23674 -- invalid initial data should not break form.changed_data()
"""
class DateAgeField(MultiValueField):
def __init__(self, fields=(), *args, **kwargs):
fields = (DateField(label="Date"), IntegerField(label="Age"))
super().__init__(fields=fields, *args, **kwargs)
class DateAgeForm(Form):
date_age = DateAgeField()
data = {"date_age": ["1998-12-06", 16]}
form = DateAgeForm(data, initial={"date_age": ["200-10-10", 14]})
self.assertTrue(form.has_changed())
def test_multivalue_optional_subfields(self):
class PhoneField(MultiValueField):
def __init__(self, *args, **kwargs):
fields = (
CharField(
label="Country Code",
validators=[
RegexValidator(
r"^\+[0-9]{1,2}$", message="Enter a valid country code."
)
],
),
CharField(label="Phone Number"),
CharField(
label="Extension",
error_messages={"incomplete": "Enter an extension."},
),
CharField(
label="Label", required=False, help_text="E.g. home, work."
),
)
super().__init__(fields, *args, **kwargs)
def compress(self, data_list):
if data_list:
return "%s.%s ext. %s (label: %s)" % tuple(data_list)
return None
# An empty value for any field will raise a `required` error on a
# required `MultiValueField`.
f = PhoneField()
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean("")
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(None)
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean([])
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(["+61"])
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(["+61", "287654321", "123"])
self.assertEqual(
"+61.287654321 ext. 123 (label: Home)",
f.clean(["+61", "287654321", "123", "Home"]),
)
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(["61", "287654321", "123", "Home"])
# Empty values for fields will NOT raise a `required` error on an
# optional `MultiValueField`
f = PhoneField(required=False)
self.assertIsNone(f.clean(""))
self.assertIsNone(f.clean(None))
self.assertIsNone(f.clean([]))
self.assertEqual("+61. ext. (label: )", f.clean(["+61"]))
self.assertEqual(
"+61.287654321 ext. 123 (label: )", f.clean(["+61", "287654321", "123"])
)
self.assertEqual(
"+61.287654321 ext. 123 (label: Home)",
f.clean(["+61", "287654321", "123", "Home"]),
)
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(["61", "287654321", "123", "Home"])
# For a required `MultiValueField` with `require_all_fields=False`, a
# `required` error will only be raised if all fields are empty. Fields
# can individually be required or optional. An empty value for any
# required field will raise an `incomplete` error.
f = PhoneField(require_all_fields=False)
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean("")
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(None)
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean([])
with self.assertRaisesMessage(ValidationError, "'Enter a complete value.'"):
f.clean(["+61"])
self.assertEqual(
"+61.287654321 ext. 123 (label: )", f.clean(["+61", "287654321", "123"])
)
with self.assertRaisesMessage(
ValidationError, "'Enter a complete value.', 'Enter an extension.'"
):
f.clean(["", "", "", "Home"])
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(["61", "287654321", "123", "Home"])
# For an optional `MultiValueField` with `require_all_fields=False`, we
# don't get any `required` error but we still get `incomplete` errors.
f = PhoneField(required=False, require_all_fields=False)
self.assertIsNone(f.clean(""))
self.assertIsNone(f.clean(None))
self.assertIsNone(f.clean([]))
with self.assertRaisesMessage(ValidationError, "'Enter a complete value.'"):
f.clean(["+61"])
self.assertEqual(
"+61.287654321 ext. 123 (label: )", f.clean(["+61", "287654321", "123"])
)
with self.assertRaisesMessage(
ValidationError, "'Enter a complete value.', 'Enter an extension.'"
):
f.clean(["", "", "", "Home"])
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(["61", "287654321", "123", "Home"])
def test_multivalue_optional_subfields_rendering(self):
class PhoneWidget(MultiWidget):
def __init__(self, attrs=None):
widgets = [TextInput(), TextInput()]
super().__init__(widgets, attrs)
def decompress(self, value):
return [None, None]
class PhoneField(MultiValueField):
def __init__(self, *args, **kwargs):
fields = [CharField(), CharField(required=False)]
super().__init__(fields, *args, **kwargs)
class PhoneForm(Form):
phone1 = PhoneField(widget=PhoneWidget)
phone2 = PhoneField(widget=PhoneWidget, required=False)
phone3 = PhoneField(widget=PhoneWidget, require_all_fields=False)
phone4 = PhoneField(
widget=PhoneWidget,
required=False,
require_all_fields=False,
)
form = PhoneForm(auto_id=False)
self.assertHTMLEqual(
form.as_p(),
"""
<p>Phone1:<input type="text" name="phone1_0" required>
<input type="text" name="phone1_1" required></p>
<p>Phone2:<input type="text" name="phone2_0">
<input type="text" name="phone2_1"></p>
<p>Phone3:<input type="text" name="phone3_0" required>
<input type="text" name="phone3_1"></p>
<p>Phone4:<input type="text" name="phone4_0">
<input type="text" name="phone4_1"></p>
""",
)
def test_custom_empty_values(self):
"""
Form fields can customize what is considered as an empty value
for themselves (#19997).
"""
class CustomJSONField(CharField):
empty_values = [None, ""]
def to_python(self, value):
# Fake json.loads
if value == "{}":
return {}
return super().to_python(value)
class JSONForm(Form):
json = CustomJSONField()
form = JSONForm(data={"json": "{}"})
form.full_clean()
self.assertEqual(form.cleaned_data, {"json": {}})
def test_boundfield_label_tag(self):
class SomeForm(Form):
field = CharField()
boundfield = SomeForm()["field"]
testcases = [ # (args, kwargs, expected)
# without anything: just print the <label>
((), {}, '<%(tag)s for="id_field">Field:</%(tag)s>'),
# passing just one argument: overrides the field's label
(("custom",), {}, '<%(tag)s for="id_field">custom:</%(tag)s>'),
# the overridden label is escaped
(("custom&",), {}, '<%(tag)s for="id_field">custom&amp;:</%(tag)s>'),
((mark_safe("custom&"),), {}, '<%(tag)s for="id_field">custom&:</%(tag)s>'),
# Passing attrs to add extra attributes on the <label>
(
(),
{"attrs": {"class": "pretty"}},
'<%(tag)s for="id_field" class="pretty">Field:</%(tag)s>',
),
]
for args, kwargs, expected in testcases:
with self.subTest(args=args, kwargs=kwargs):
self.assertHTMLEqual(
boundfield.label_tag(*args, **kwargs),
expected % {"tag": "label"},
)
self.assertHTMLEqual(
boundfield.legend_tag(*args, **kwargs),
expected % {"tag": "legend"},
)
def test_boundfield_label_tag_no_id(self):
"""
If a widget has no id, label_tag() and legend_tag() return the text
with no surrounding <label>.
"""
class SomeForm(Form):
field = CharField()
boundfield = SomeForm(auto_id="")["field"]
self.assertHTMLEqual(boundfield.label_tag(), "Field:")
self.assertHTMLEqual(boundfield.legend_tag(), "Field:")
self.assertHTMLEqual(boundfield.label_tag("Custom&"), "Custom&amp;:")
self.assertHTMLEqual(boundfield.legend_tag("Custom&"), "Custom&amp;:")
def test_boundfield_label_tag_custom_widget_id_for_label(self):
class CustomIdForLabelTextInput(TextInput):
def id_for_label(self, id):
return "custom_" + id
class EmptyIdForLabelTextInput(TextInput):
def id_for_label(self, id):
return None
class SomeForm(Form):
custom = CharField(widget=CustomIdForLabelTextInput)
empty = CharField(widget=EmptyIdForLabelTextInput)
form = SomeForm()
self.assertHTMLEqual(
form["custom"].label_tag(), '<label for="custom_id_custom">Custom:</label>'
)
self.assertHTMLEqual(
form["custom"].legend_tag(),
'<legend for="custom_id_custom">Custom:</legend>',
)
self.assertHTMLEqual(form["empty"].label_tag(), "<label>Empty:</label>")
self.assertHTMLEqual(form["empty"].legend_tag(), "<legend>Empty:</legend>")
def test_boundfield_empty_label(self):
class SomeForm(Form):
field = CharField(label="")
boundfield = SomeForm()["field"]
self.assertHTMLEqual(boundfield.label_tag(), '<label for="id_field"></label>')
self.assertHTMLEqual(
boundfield.legend_tag(),
'<legend for="id_field"></legend>',
)
def test_boundfield_id_for_label(self):
class SomeForm(Form):
field = CharField(label="")
self.assertEqual(SomeForm()["field"].id_for_label, "id_field")
def test_boundfield_id_for_label_override_by_attrs(self):
"""
If an id is provided in `Widget.attrs`, it overrides the generated ID,
unless it is `None`.
"""
class SomeForm(Form):
field = CharField(widget=TextInput(attrs={"id": "myCustomID"}))
field_none = CharField(widget=TextInput(attrs={"id": None}))
form = SomeForm()
self.assertEqual(form["field"].id_for_label, "myCustomID")
self.assertEqual(form["field_none"].id_for_label, "id_field_none")
def test_boundfield_subwidget_id_for_label(self):
"""
If auto_id is provided when initializing the form, the generated ID in
subwidgets must reflect that prefix.
"""
class SomeForm(Form):
field = MultipleChoiceField(
choices=[("a", "A"), ("b", "B")],
widget=CheckboxSelectMultiple,
)
form = SomeForm(auto_id="prefix_%s")
subwidgets = form["field"].subwidgets
self.assertEqual(subwidgets[0].id_for_label, "prefix_field_0")
self.assertEqual(subwidgets[1].id_for_label, "prefix_field_1")
def test_boundfield_widget_type(self):
class SomeForm(Form):
first_name = CharField()
birthday = SplitDateTimeField(widget=SplitHiddenDateTimeWidget)
f = SomeForm()
self.assertEqual(f["first_name"].widget_type, "text")
self.assertEqual(f["birthday"].widget_type, "splithiddendatetime")
def test_boundfield_css_classes(self):
form = Person()
field = form["first_name"]
self.assertEqual(field.css_classes(), "")
self.assertEqual(field.css_classes(extra_classes=""), "")
self.assertEqual(field.css_classes(extra_classes="test"), "test")
self.assertEqual(field.css_classes(extra_classes="test test"), "test")
def test_label_suffix_override(self):
"""
BoundField label_suffix (if provided) overrides Form label_suffix
"""
class SomeForm(Form):
field = CharField()
boundfield = SomeForm(label_suffix="!")["field"]
self.assertHTMLEqual(
boundfield.label_tag(label_suffix="$"),
'<label for="id_field">Field$</label>',
)
self.assertHTMLEqual(
boundfield.legend_tag(label_suffix="$"),
'<legend for="id_field">Field$</legend>',
)
def test_error_dict(self):
class MyForm(Form):
foo = CharField()
bar = CharField()
def clean(self):
raise ValidationError(
"Non-field error.", code="secret", params={"a": 1, "b": 2}
)
form = MyForm({})
self.assertIs(form.is_valid(), False)
errors = form.errors.as_text()
control = [
"* foo\n * This field is required.",
"* bar\n * This field is required.",
"* __all__\n * Non-field error.",
]
for error in control:
self.assertIn(error, errors)
errors = form.errors.as_ul()
control = [
'<li>foo<ul class="errorlist"><li>This field is required.</li></ul></li>',
'<li>bar<ul class="errorlist"><li>This field is required.</li></ul></li>',
'<li>__all__<ul class="errorlist nonfield"><li>Non-field error.</li></ul>'
"</li>",
]
for error in control:
self.assertInHTML(error, errors)
errors = form.errors.get_json_data()
control = {
"foo": [{"code": "required", "message": "This field is required."}],
"bar": [{"code": "required", "message": "This field is required."}],
"__all__": [{"code": "secret", "message": "Non-field error."}],
}
self.assertEqual(errors, control)
self.assertEqual(json.dumps(errors), form.errors.as_json())
def test_error_dict_as_json_escape_html(self):
"""#21962 - adding html escape flag to ErrorDict"""
class MyForm(Form):
foo = CharField()
bar = CharField()
def clean(self):
raise ValidationError(
"<p>Non-field error.</p>",
code="secret",
params={"a": 1, "b": 2},
)
control = {
"foo": [{"code": "required", "message": "This field is required."}],
"bar": [{"code": "required", "message": "This field is required."}],
"__all__": [{"code": "secret", "message": "<p>Non-field error.</p>"}],
}
form = MyForm({})
self.assertFalse(form.is_valid())
errors = json.loads(form.errors.as_json())
self.assertEqual(errors, control)
escaped_error = "&lt;p&gt;Non-field error.&lt;/p&gt;"
self.assertEqual(
form.errors.get_json_data(escape_html=True)["__all__"][0]["message"],
escaped_error,
)
errors = json.loads(form.errors.as_json(escape_html=True))
control["__all__"][0]["message"] = escaped_error
self.assertEqual(errors, control)
def test_error_list(self):
e = ErrorList()
e.append("Foo")
e.append(ValidationError("Foo%(bar)s", code="foobar", params={"bar": "bar"}))
self.assertIsInstance(e, list)
self.assertIn("Foo", e)
self.assertIn("Foo", ValidationError(e))
self.assertEqual(e.as_text(), "* Foo\n* Foobar")
self.assertEqual(
e.as_ul(), '<ul class="errorlist"><li>Foo</li><li>Foobar</li></ul>'
)
errors = e.get_json_data()
self.assertEqual(
errors,
[{"message": "Foo", "code": ""}, {"message": "Foobar", "code": "foobar"}],
)
self.assertEqual(json.dumps(errors), e.as_json())
def test_error_list_class_not_specified(self):
e = ErrorList()
e.append("Foo")
e.append(ValidationError("Foo%(bar)s", code="foobar", params={"bar": "bar"}))
self.assertEqual(
e.as_ul(), '<ul class="errorlist"><li>Foo</li><li>Foobar</li></ul>'
)
def test_error_list_class_has_one_class_specified(self):
e = ErrorList(error_class="foobar-error-class")
e.append("Foo")
e.append(ValidationError("Foo%(bar)s", code="foobar", params={"bar": "bar"}))
self.assertEqual(
e.as_ul(),
'<ul class="errorlist foobar-error-class"><li>Foo</li><li>Foobar</li></ul>',
)
def test_error_list_with_hidden_field_errors_has_correct_class(self):
class Person(Form):
first_name = CharField()
last_name = CharField(widget=HiddenInput)
p = Person({"first_name": "John"})
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist nonfield">
<li>(Hidden field last_name) This field is required.</li></ul></li><li>
<label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John" required>
<input id="id_last_name" name="last_name" type="hidden"></li>""",
)
self.assertHTMLEqual(
p.as_p(),
"""
<ul class="errorlist nonfield">
<li>(Hidden field last_name) This field is required.</li></ul>
<p><label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John"
required>
<input id="id_last_name" name="last_name" type="hidden"></p>
""",
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><td colspan="2"><ul class="errorlist nonfield">
<li>(Hidden field last_name) This field is required.</li></ul></td></tr>
<tr><th><label for="id_first_name">First name:</label></th><td>
<input id="id_first_name" name="first_name" type="text" value="John" required>
<input id="id_last_name" name="last_name" type="hidden"></td></tr>""",
)
self.assertHTMLEqual(
p.as_div(),
'<ul class="errorlist nonfield"><li>(Hidden field last_name) This field '
'is required.</li></ul><div><label for="id_first_name">First name:</label>'
'<input id="id_first_name" name="first_name" type="text" value="John" '
'required><input id="id_last_name" name="last_name" type="hidden"></div>',
)
def test_error_list_with_non_field_errors_has_correct_class(self):
class Person(Form):
first_name = CharField()
last_name = CharField()
def clean(self):
raise ValidationError("Generic validation error")
p = Person({"first_name": "John", "last_name": "Lennon"})
self.assertHTMLEqual(
str(p.non_field_errors()),
'<ul class="errorlist nonfield"><li>Generic validation error</li></ul>',
)
self.assertHTMLEqual(
p.as_ul(),
"""<li>
<ul class="errorlist nonfield"><li>Generic validation error</li></ul></li>
<li><label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John" required></li>
<li><label for="id_last_name">Last name:</label>
<input id="id_last_name" name="last_name" type="text" value="Lennon" required></li>""",
)
self.assertHTMLEqual(
p.non_field_errors().as_text(), "* Generic validation error"
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist nonfield"><li>Generic validation error</li></ul>
<p><label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John" required></p>
<p><label for="id_last_name">Last name:</label>
<input id="id_last_name" name="last_name" type="text" value="Lennon" required></p>""",
)
self.assertHTMLEqual(
p.as_table(),
"""
<tr><td colspan="2"><ul class="errorlist nonfield">
<li>Generic validation error</li></ul></td></tr>
<tr><th><label for="id_first_name">First name:</label></th><td>
<input id="id_first_name" name="first_name" type="text" value="John"
required>
</td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input id="id_last_name" name="last_name" type="text" value="Lennon"
required>
</td></tr>
""",
)
self.assertHTMLEqual(
p.as_div(),
'<ul class="errorlist nonfield"><li>Generic validation error</li></ul>'
'<div><label for="id_first_name">First name:</label><input '
'id="id_first_name" name="first_name" type="text" value="John" required>'
'</div><div><label for="id_last_name">Last name:</label><input '
'id="id_last_name" name="last_name" type="text" value="Lennon" required>'
"</div>",
)
def test_error_escaping(self):
class TestForm(Form):
hidden = CharField(widget=HiddenInput(), required=False)
visible = CharField()
def clean_hidden(self):
raise ValidationError('Foo & "bar"!')
clean_visible = clean_hidden
form = TestForm({"hidden": "a", "visible": "b"})
form.is_valid()
self.assertHTMLEqual(
form.as_ul(),
'<li><ul class="errorlist nonfield">'
"<li>(Hidden field hidden) Foo &amp; &quot;bar&quot;!</li></ul></li>"
'<li><ul class="errorlist"><li>Foo &amp; &quot;bar&quot;!</li></ul>'
'<label for="id_visible">Visible:</label> '
'<input type="text" name="visible" aria-invalid="true" value="b" '
'id="id_visible" required>'
'<input type="hidden" name="hidden" value="a" id="id_hidden"></li>',
)
def test_baseform_repr(self):
"""
BaseForm.__repr__() should contain some basic information about the
form.
"""
p = Person()
self.assertEqual(
repr(p),
"<Person bound=False, valid=Unknown, "
"fields=(first_name;last_name;birthday)>",
)
p = Person(
{"first_name": "John", "last_name": "Lennon", "birthday": "1940-10-9"}
)
self.assertEqual(
repr(p),
"<Person bound=True, valid=Unknown, "
"fields=(first_name;last_name;birthday)>",
)
p.is_valid()
self.assertEqual(
repr(p),
"<Person bound=True, valid=True, fields=(first_name;last_name;birthday)>",
)
p = Person(
{"first_name": "John", "last_name": "Lennon", "birthday": "fakedate"}
)
p.is_valid()
self.assertEqual(
repr(p),
"<Person bound=True, valid=False, fields=(first_name;last_name;birthday)>",
)
def test_baseform_repr_dont_trigger_validation(self):
"""
BaseForm.__repr__() shouldn't trigger the form validation.
"""
p = Person(
{"first_name": "John", "last_name": "Lennon", "birthday": "fakedate"}
)
repr(p)
with self.assertRaises(AttributeError):
p.cleaned_data
self.assertFalse(p.is_valid())
self.assertEqual(p.cleaned_data, {"first_name": "John", "last_name": "Lennon"})
def test_accessing_clean(self):
class UserForm(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
def clean(self):
data = self.cleaned_data
if not self.errors:
data["username"] = data["username"].lower()
return data
f = UserForm({"username": "SirRobin", "password": "blue"})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data["username"], "sirrobin")
def test_changing_cleaned_data_nothing_returned(self):
class UserForm(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
def clean(self):
self.cleaned_data["username"] = self.cleaned_data["username"].lower()
# don't return anything
f = UserForm({"username": "SirRobin", "password": "blue"})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data["username"], "sirrobin")
def test_changing_cleaned_data_in_clean(self):
class UserForm(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
def clean(self):
data = self.cleaned_data
# Return a different dict. We have not changed self.cleaned_data.
return {
"username": data["username"].lower(),
"password": "this_is_not_a_secret",
}
f = UserForm({"username": "SirRobin", "password": "blue"})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data["username"], "sirrobin")
def test_multipart_encoded_form(self):
class FormWithoutFile(Form):
username = CharField()
class FormWithFile(Form):
username = CharField()
file = FileField()
class FormWithImage(Form):
image = ImageField()
self.assertFalse(FormWithoutFile().is_multipart())
self.assertTrue(FormWithFile().is_multipart())
self.assertTrue(FormWithImage().is_multipart())
def test_html_safe(self):
class SimpleForm(Form):
username = CharField()
form = SimpleForm()
self.assertTrue(hasattr(SimpleForm, "__html__"))
self.assertEqual(str(form), form.__html__())
self.assertTrue(hasattr(form["username"], "__html__"))
self.assertEqual(str(form["username"]), form["username"].__html__())
def test_use_required_attribute_true(self):
class MyForm(Form):
use_required_attribute = True
f1 = CharField(max_length=30)
f2 = CharField(max_length=30, required=False)
f3 = CharField(widget=Textarea)
f4 = ChoiceField(choices=[("P", "Python"), ("J", "Java")])
form = MyForm()
self.assertHTMLEqual(
form.as_p(),
'<p><label for="id_f1">F1:</label>'
'<input id="id_f1" maxlength="30" name="f1" type="text" required></p>'
'<p><label for="id_f2">F2:</label>'
'<input id="id_f2" maxlength="30" name="f2" type="text"></p>'
'<p><label for="id_f3">F3:</label>'
'<textarea cols="40" id="id_f3" name="f3" rows="10" required>'
"</textarea></p>"
'<p><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
"</select></p>",
)
self.assertHTMLEqual(
form.as_ul(),
'<li><label for="id_f1">F1:</label> '
'<input id="id_f1" maxlength="30" name="f1" type="text" required></li>'
'<li><label for="id_f2">F2:</label>'
'<input id="id_f2" maxlength="30" name="f2" type="text"></li>'
'<li><label for="id_f3">F3:</label>'
'<textarea cols="40" id="id_f3" name="f3" rows="10" required>'
"</textarea></li>"
'<li><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
"</select></li>",
)
self.assertHTMLEqual(
form.as_table(),
'<tr><th><label for="id_f1">F1:</label></th>'
'<td><input id="id_f1" maxlength="30" name="f1" type="text" required>'
"</td></tr>"
'<tr><th><label for="id_f2">F2:</label></th>'
'<td><input id="id_f2" maxlength="30" name="f2" type="text"></td></tr>'
'<tr><th><label for="id_f3">F3:</label></th>'
'<td><textarea cols="40" id="id_f3" name="f3" rows="10" required>'
"</textarea></td></tr>"
'<tr><th><label for="id_f4">F4:</label></th><td>'
'<select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
"</select></td></tr>",
)
self.assertHTMLEqual(
form.render(form.template_name_div),
'<div><label for="id_f1">F1:</label><input id="id_f1" maxlength="30" '
'name="f1" type="text" required></div><div><label for="id_f2">F2:</label>'
'<input id="id_f2" maxlength="30" name="f2" type="text"></div><div><label '
'for="id_f3">F3:</label><textarea cols="40" id="id_f3" name="f3" '
'rows="10" required></textarea></div><div><label for="id_f4">F4:</label>'
'<select id="id_f4" name="f4"><option value="P">Python</option>'
'<option value="J">Java</option></select></div>',
)
def test_use_required_attribute_false(self):
class MyForm(Form):
use_required_attribute = False
f1 = CharField(max_length=30)
f2 = CharField(max_length=30, required=False)
f3 = CharField(widget=Textarea)
f4 = ChoiceField(choices=[("P", "Python"), ("J", "Java")])
form = MyForm()
self.assertHTMLEqual(
form.as_p(),
'<p><label for="id_f1">F1:</label>'
'<input id="id_f1" maxlength="30" name="f1" type="text"></p>'
'<p><label for="id_f2">F2:</label>'
'<input id="id_f2" maxlength="30" name="f2" type="text"></p>'
'<p><label for="id_f3">F3:</label>'
'<textarea cols="40" id="id_f3" name="f3" rows="10"></textarea></p>'
'<p><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
"</select></p>",
)
self.assertHTMLEqual(
form.as_ul(),
'<li><label for="id_f1">F1:</label>'
'<input id="id_f1" maxlength="30" name="f1" type="text"></li>'
'<li><label for="id_f2">F2:</label>'
'<input id="id_f2" maxlength="30" name="f2" type="text"></li>'
'<li><label for="id_f3">F3:</label>'
'<textarea cols="40" id="id_f3" name="f3" rows="10"></textarea></li>'
'<li><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
"</select></li>",
)
self.assertHTMLEqual(
form.as_table(),
'<tr><th><label for="id_f1">F1:</label></th>'
'<td><input id="id_f1" maxlength="30" name="f1" type="text"></td></tr>'
'<tr><th><label for="id_f2">F2:</label></th>'
'<td><input id="id_f2" maxlength="30" name="f2" type="text"></td></tr>'
'<tr><th><label for="id_f3">F3:</label></th><td>'
'<textarea cols="40" id="id_f3" name="f3" rows="10">'
"</textarea></td></tr>"
'<tr><th><label for="id_f4">F4:</label></th><td>'
'<select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
"</select></td></tr>",
)
self.assertHTMLEqual(
form.render(form.template_name_div),
'<div><label for="id_f1">F1:</label> <input id="id_f1" maxlength="30" '
'name="f1" type="text"></div><div><label for="id_f2">F2:</label>'
'<input id="id_f2" maxlength="30" name="f2" type="text"></div><div>'
'<label for="id_f3">F3:</label> <textarea cols="40" id="id_f3" name="f3" '
'rows="10"></textarea></div><div><label for="id_f4">F4:</label>'
'<select id="id_f4" name="f4"><option value="P">Python</option>'
'<option value="J">Java</option></select></div>',
)
def test_only_hidden_fields(self):
# A form with *only* hidden fields that has errors is going to be very unusual.
class HiddenForm(Form):
data = IntegerField(widget=HiddenInput)
f = HiddenForm({})
self.assertHTMLEqual(
f.as_p(),
'<ul class="errorlist nonfield">'
"<li>(Hidden field data) This field is required.</li></ul>\n<p> "
'<input type="hidden" name="data" id="id_data"></p>',
)
self.assertHTMLEqual(
f.as_table(),
'<tr><td colspan="2"><ul class="errorlist nonfield">'
"<li>(Hidden field data) This field is required.</li></ul>"
'<input type="hidden" name="data" id="id_data"></td></tr>',
)
def test_field_named_data(self):
class DataForm(Form):
data = CharField(max_length=10)
f = DataForm({"data": "xyzzy"})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data, {"data": "xyzzy"})
def test_empty_data_files_multi_value_dict(self):
p = Person()
self.assertIsInstance(p.data, MultiValueDict)
self.assertIsInstance(p.files, MultiValueDict)
def test_field_deep_copy_error_messages(self):
class CustomCharField(CharField):
def __init__(self, **kwargs):
kwargs["error_messages"] = {"invalid": "Form custom error message."}
super().__init__(**kwargs)
field = CustomCharField()
field_copy = copy.deepcopy(field)
self.assertIsInstance(field_copy, CustomCharField)
self.assertIsNot(field_copy.error_messages, field.error_messages)
def test_label_does_not_include_new_line(self):
form = Person()
field = form["first_name"]
self.assertEqual(
field.label_tag(), '<label for="id_first_name">First name:</label>'
)
self.assertEqual(
field.legend_tag(),
'<legend for="id_first_name">First name:</legend>',
)
@override_settings(USE_THOUSAND_SEPARATOR=True)
def test_label_attrs_not_localized(self):
form = Person()
field = form["first_name"]
self.assertHTMLEqual(
field.label_tag(attrs={"number": 9999}),
'<label number="9999" for="id_first_name">First name:</label>',
)
self.assertHTMLEqual(
field.legend_tag(attrs={"number": 9999}),
'<legend number="9999" for="id_first_name">First name:</legend>',
)
def test_remove_cached_field(self):
class TestForm(Form):
name = CharField(max_length=10)
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
# Populate fields cache.
[field for field in self]
# Removed cached field.
del self.fields["name"]
f = TestForm({"name": "abcde"})
with self.assertRaises(KeyError):
f["name"]
@jinja2_tests
class Jinja2FormsTestCase(FormsTestCase):
pass
class CustomRenderer(DjangoTemplates):
form_template_name = "forms_tests/form_snippet.html"
field_template_name = "forms_tests/custom_field.html"
class RendererTests(SimpleTestCase):
def test_default(self):
form = Form()
self.assertEqual(form.renderer, get_default_renderer())
def test_kwarg_instance(self):
custom = CustomRenderer()
form = Form(renderer=custom)
self.assertEqual(form.renderer, custom)
def test_kwarg_class(self):
custom = CustomRenderer()
form = Form(renderer=custom)
self.assertEqual(form.renderer, custom)
def test_attribute_instance(self):
class CustomForm(Form):
default_renderer = DjangoTemplates()
form = CustomForm()
self.assertEqual(form.renderer, CustomForm.default_renderer)
def test_attribute_class(self):
class CustomForm(Form):
default_renderer = CustomRenderer
form = CustomForm()
self.assertIsInstance(form.renderer, CustomForm.default_renderer)
def test_attribute_override(self):
class CustomForm(Form):
default_renderer = DjangoTemplates()
custom = CustomRenderer()
form = CustomForm(renderer=custom)
self.assertEqual(form.renderer, custom)
class TemplateTests(SimpleTestCase):
def test_iterate_radios(self):
f = FrameworkForm(auto_id="id_%s")
t = Template(
"{% for radio in form.language %}"
'<div class="myradio">{{ radio }}</div>'
"{% endfor %}"
)
self.assertHTMLEqual(
t.render(Context({"form": f})),
'<div class="myradio"><label for="id_language_0">'
'<input id="id_language_0" name="language" type="radio" value="P" '
"required> Python</label></div>"
'<div class="myradio"><label for="id_language_1">'
'<input id="id_language_1" name="language" type="radio" value="J" '
"required> Java</label></div>",
)
def test_iterate_checkboxes(self):
f = SongForm({"composers": ["J", "P"]}, auto_id=False)
t = Template(
"{% for checkbox in form.composers %}"
'<div class="mycheckbox">{{ checkbox }}</div>'
"{% endfor %}"
)
self.assertHTMLEqual(
t.render(Context({"form": f})),
'<div class="mycheckbox"><label>'
'<input checked name="composers" type="checkbox" value="J"> '
"John Lennon</label></div>"
'<div class="mycheckbox"><label>'
'<input checked name="composers" type="checkbox" value="P"> '
"Paul McCartney</label></div>",
)
def test_templates_with_forms(self):
class UserRegistration(Form):
username = CharField(
max_length=10,
help_text=("Good luck picking a username that doesn't already exist."),
)
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean(self):
if (
self.cleaned_data.get("password1")
and self.cleaned_data.get("password2")
and self.cleaned_data["password1"] != self.cleaned_data["password2"]
):
raise ValidationError("Please make sure your passwords match.")
return self.cleaned_data
# There is full flexibility in displaying form fields in a template.
# Just pass a Form instance to the template, and use "dot" access to
# refer to individual fields. However, this flexibility comes with the
# responsibility of displaying all the errors, including any that might
# not be associated with a particular field.
t = Template(
"<form>"
"{{ form.username.errors.as_ul }}"
"<p><label>Your username: {{ form.username }}</label></p>"
"{{ form.password1.errors.as_ul }}"
"<p><label>Password: {{ form.password1 }}</label></p>"
"{{ form.password2.errors.as_ul }}"
"<p><label>Password (again): {{ form.password2 }}</label></p>"
'<input type="submit" required>'
"</form>"
)
f = UserRegistration(auto_id=False)
self.assertHTMLEqual(
t.render(Context({"form": f})),
"<form>"
"<p><label>Your username: "
'<input type="text" name="username" maxlength="10" required></label></p>'
"<p><label>Password: "
'<input type="password" name="password1" required></label></p>'
"<p><label>Password (again): "
'<input type="password" name="password2" required></label></p>'
'<input type="submit" required>'
"</form>",
)
f = UserRegistration({"username": "django"}, auto_id=False)
self.assertHTMLEqual(
t.render(Context({"form": f})),
"<form>"
"<p><label>Your username: "
'<input type="text" name="username" value="django" maxlength="10" required>'
"</label></p>"
'<ul class="errorlist"><li>This field is required.</li></ul><p>'
"<label>Password: "
'<input type="password" name="password1" aria-invalid="true" required>'
"</label></p>"
'<ul class="errorlist"><li>This field is required.</li></ul>'
"<p><label>Password (again): "
'<input type="password" name="password2" aria-invalid="true" required>'
"</label></p>"
'<input type="submit" required>'
"</form>",
)
# Use form.[field].label to output a field's label. 'label' for a field
# can by specified by using the 'label' argument to a Field class. If
# 'label' is not specified, Django will use the field name with
# underscores converted to spaces, and the initial letter capitalized.
t = Template(
"<form>"
"<p><label>{{ form.username.label }}: {{ form.username }}</label></p>"
"<p><label>{{ form.password1.label }}: {{ form.password1 }}</label></p>"
"<p><label>{{ form.password2.label }}: {{ form.password2 }}</label></p>"
'<input type="submit" required>'
"</form>"
)
f = UserRegistration(auto_id=False)
self.assertHTMLEqual(
t.render(Context({"form": f})),
"<form>"
"<p><label>Username: "
'<input type="text" name="username" maxlength="10" required></label></p>'
"<p><label>Password1: "
'<input type="password" name="password1" required></label></p>'
"<p><label>Password2: "
'<input type="password" name="password2" required></label></p>'
'<input type="submit" required>'
"</form>",
)
# Use form.[field].label_tag to output a field's label with a <label>
# tag wrapped around it, but *only* if the given field has an "id"
# attribute. Recall from above that passing the "auto_id" argument to a
# Form gives each field an "id" attribute.
t = Template(
"<form>"
"<p>{{ form.username.label_tag }} {{ form.username }}"
'<span {% if form.username.id_for_label %}id="'
'{{ form.username.id_for_label }}_helptext"{% endif %}>'
"{{ form.username.help_text}}</span></p>"
"<p>{{ form.password1.label_tag }} {{ form.password1 }}</p>"
"<p>{{ form.password2.label_tag }} {{ form.password2 }}</p>"
'<input type="submit" required>'
"</form>"
)
self.assertHTMLEqual(
t.render(Context({"form": f})),
"<form>"
"<p>Username: "
'<input type="text" name="username" maxlength="10" required>'
"<span>Good luck picking a username that doesn't already exist.</span></p>"
'<p>Password1: <input type="password" name="password1" required></p>'
'<p>Password2: <input type="password" name="password2" required></p>'
'<input type="submit" required>'
"</form>",
)
f = UserRegistration(auto_id="id_%s")
self.assertHTMLEqual(
t.render(Context({"form": f})),
"<form>"
'<p><label for="id_username">Username:</label>'
'<input id="id_username" type="text" name="username" maxlength="10" '
'aria-describedby="id_username_helptext" required>'
'<span id="id_username_helptext">'
"Good luck picking a username that doesn't already exist.</span></p>"
'<p><label for="id_password1">Password1:</label>'
'<input type="password" name="password1" id="id_password1" required></p>'
'<p><label for="id_password2">Password2:</label>'
'<input type="password" name="password2" id="id_password2" required></p>'
'<input type="submit" required>'
"</form>",
)
# Use form.[field].legend_tag to output a field's label with a <legend>
# tag wrapped around it, but *only* if the given field has an "id"
# attribute. Recall from above that passing the "auto_id" argument to a
# Form gives each field an "id" attribute.
t = Template(
"<form>"
"<p>{{ form.username.legend_tag }} {{ form.username }}</p>"
"<p>{{ form.password1.legend_tag }} {{ form.password1 }}</p>"
"<p>{{ form.password2.legend_tag }} {{ form.password2 }}</p>"
'<input type="submit" required>'
"</form>"
)
f = UserRegistration(auto_id=False)
self.assertHTMLEqual(
t.render(Context({"form": f})),
"<form>"
"<p>Username: "
'<input type="text" name="username" maxlength="10" required></p>'
'<p>Password1: <input type="password" name="password1" required></p>'
'<p>Password2: <input type="password" name="password2" required></p>'
'<input type="submit" required>'
"</form>",
)
f = UserRegistration(auto_id="id_%s")
self.assertHTMLEqual(
t.render(Context({"form": f})),
"<form>"
'<p><legend for="id_username">Username:</legend>'
'<input id="id_username" type="text" name="username" maxlength="10" '
'aria-describedby="id_username_helptext" required></p>'
'<p><legend for="id_password1">Password1:</legend>'
'<input type="password" name="password1" id="id_password1" required></p>'
'<p><legend for="id_password2">Password2:</legend>'
'<input type="password" name="password2" id="id_password2" required></p>'
'<input type="submit" required>'
"</form>",
)
# Use form.[field].help_text to output a field's help text. If the
# given field does not have help text, nothing will be output.
t = Template(
"<form>"
"<p>{{ form.username.label_tag }} {{ form.username }}<br>"
"{{ form.username.help_text }}</p>"
"<p>{{ form.password1.label_tag }} {{ form.password1 }}</p>"
"<p>{{ form.password2.label_tag }} {{ form.password2 }}</p>"
'<input type="submit" required>'
"</form>"
)
f = UserRegistration(auto_id=False)
self.assertHTMLEqual(
t.render(Context({"form": f})),
"<form>"
"<p>Username: "
'<input type="text" name="username" maxlength="10" required><br>'
"Good luck picking a username that doesn&#x27;t already exist.</p>"
'<p>Password1: <input type="password" name="password1" required></p>'
'<p>Password2: <input type="password" name="password2" required></p>'
'<input type="submit" required>'
"</form>",
)
self.assertEqual(
Template("{{ form.password1.help_text }}").render(Context({"form": f})),
"",
)
# To display the errors that aren't associated with a particular field
# e.g. the errors caused by Form.clean() -- use
# {{ form.non_field_errors }} in the template. If used on its own, it
# is displayed as a <ul> (or an empty string, if the list of errors is
# empty).
t = Template(
"<form>"
"{{ form.username.errors.as_ul }}"
"<p><label>Your username: {{ form.username }}</label></p>"
"{{ form.password1.errors.as_ul }}"
"<p><label>Password: {{ form.password1 }}</label></p>"
"{{ form.password2.errors.as_ul }}"
"<p><label>Password (again): {{ form.password2 }}</label></p>"
'<input type="submit" required>'
"</form>"
)
f = UserRegistration(
{"username": "django", "password1": "foo", "password2": "bar"},
auto_id=False,
)
self.assertHTMLEqual(
t.render(Context({"form": f})),
"<form>"
"<p><label>Your username: "
'<input type="text" name="username" value="django" maxlength="10" required>'
"</label></p>"
"<p><label>Password: "
'<input type="password" name="password1" required></label></p>'
"<p><label>Password (again): "
'<input type="password" name="password2" required></label></p>'
'<input type="submit" required>'
"</form>",
)
t = Template(
"<form>"
"{{ form.non_field_errors }}"
"{{ form.username.errors.as_ul }}"
"<p><label>Your username: {{ form.username }}</label></p>"
"{{ form.password1.errors.as_ul }}"
"<p><label>Password: {{ form.password1 }}</label></p>"
"{{ form.password2.errors.as_ul }}"
"<p><label>Password (again): {{ form.password2 }}</label></p>"
'<input type="submit" required>'
"</form>"
)
self.assertHTMLEqual(
t.render(Context({"form": f})),
"<form>"
'<ul class="errorlist nonfield">'
"<li>Please make sure your passwords match.</li></ul>"
"<p><label>Your username: "
'<input type="text" name="username" value="django" maxlength="10" required>'
"</label></p>"
"<p><label>Password: "
'<input type="password" name="password1" required></label></p>'
"<p><label>Password (again): "
'<input type="password" name="password2" required></label></p>'
'<input type="submit" required>'
"</form>",
)
def test_basic_processing_in_view(self):
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean(self):
if (
self.cleaned_data.get("password1")
and self.cleaned_data.get("password2")
and self.cleaned_data["password1"] != self.cleaned_data["password2"]
):
raise ValidationError("Please make sure your passwords match.")
return self.cleaned_data
def my_function(method, post_data):
if method == "POST":
form = UserRegistration(post_data, auto_id=False)
else:
form = UserRegistration(auto_id=False)
if form.is_valid():
return "VALID: %r" % sorted(form.cleaned_data.items())
t = Template(
'<form method="post">'
"{{ form }}"
'<input type="submit" required>'
"</form>"
)
return t.render(Context({"form": form}))
# GET with an empty form and no errors.
self.assertHTMLEqual(
my_function("GET", {}),
'<form method="post">'
"<div>Username:"
'<input type="text" name="username" maxlength="10" required></div>'
"<div>Password1:"
'<input type="password" name="password1" required></div>'
"<div>Password2:"
'<input type="password" name="password2" required></div>'
'<input type="submit" required>'
"</form>",
)
# POST with erroneous data, a redisplayed form, with errors.
self.assertHTMLEqual(
my_function(
"POST",
{
"username": "this-is-a-long-username",
"password1": "foo",
"password2": "bar",
},
),
'<form method="post">'
'<ul class="errorlist nonfield">'
"<li>Please make sure your passwords match.</li></ul>"
'<div>Username:<ul class="errorlist">'
"<li>Ensure this value has at most 10 characters (it has 23).</li></ul>"
'<input type="text" name="username" aria-invalid="true" '
'value="this-is-a-long-username" maxlength="10" required></div>'
"<div>Password1:"
'<input type="password" name="password1" required></div>'
"<div>Password2:"
'<input type="password" name="password2" required></div>'
'<input type="submit" required>'
"</form>",
)
# POST with valid data (the success message).
self.assertEqual(
my_function(
"POST",
{
"username": "adrian",
"password1": "secret",
"password2": "secret",
},
),
"VALID: [('password1', 'secret'), ('password2', 'secret'), "
"('username', 'adrian')]",
)
def test_custom_field_template(self):
class MyForm(Form):
first_name = CharField(template_name="forms_tests/custom_field.html")
f = MyForm()
self.assertHTMLEqual(
f.render(),
'<div><label for="id_first_name">First name:</label><p>Custom Field<p>'
'<input type="text" name="first_name" required id="id_first_name"></div>',
)
def test_custom_field_render_template(self):
class MyForm(Form):
first_name = CharField()
f = MyForm()
self.assertHTMLEqual(
f["first_name"].render(template_name="forms_tests/custom_field.html"),
'<label for="id_first_name">First name:</label><p>Custom Field<p>'
'<input type="text" name="first_name" required id="id_first_name">',
)
class OverrideTests(SimpleTestCase):
@override_settings(FORM_RENDERER="forms_tests.tests.test_forms.CustomRenderer")
def test_custom_renderer_template_name(self):
class Person(Form):
first_name = CharField()
t = Template("{{ form }}")
html = t.render(Context({"form": Person()}))
expected = """
<div class="fieldWrapper"><label for="id_first_name">First name:</label>
<input type="text" name="first_name" required id="id_first_name"></div>
"""
self.assertHTMLEqual(html, expected)
@override_settings(FORM_RENDERER="forms_tests.tests.test_forms.CustomRenderer")
def test_custom_renderer_field_template_name(self):
class Person(Form):
first_name = CharField()
t = Template("{{ form.first_name.as_field_group }}")
html = t.render(Context({"form": Person()}))
expected = """
<label for="id_first_name">First name:</label>
<p>Custom Field<p>
<input type="text" name="first_name" required id="id_first_name">
"""
self.assertHTMLEqual(html, expected)
def test_per_form_template_name(self):
class Person(Form):
first_name = CharField()
template_name = "forms_tests/form_snippet.html"
t = Template("{{ form }}")
html = t.render(Context({"form": Person()}))
expected = """
<div class="fieldWrapper"><label for="id_first_name">First name:</label>
<input type="text" name="first_name" required id="id_first_name"></div>
"""
self.assertHTMLEqual(html, expected)
def test_errorlist_override(self):
class CustomErrorList(ErrorList):
template_name = "forms_tests/error.html"
class CommentForm(Form):
name = CharField(max_length=50, required=False)
email = EmailField()
comment = CharField()
data = {"email": "invalid"}
f = CommentForm(data, auto_id=False, error_class=CustomErrorList)
self.assertHTMLEqual(
f.as_p(),
'<p>Name: <input type="text" name="name" maxlength="50"></p>'
'<div class="errorlist">'
'<div class="error">Enter a valid email address.</div></div>'
"<p>Email: "
'<input type="email" name="email" value="invalid" maxlength="320" '
'aria-invalid="true" required></p><div class="errorlist">'
'<div class="error">This field is required.</div></div>'
'<p>Comment: <input type="text" name="comment" aria-invalid="true" '
"required></p>",
)
def test_cyclic_context_boundfield_render(self):
class FirstNameForm(Form):
first_name = CharField()
template_name_label = "forms_tests/cyclic_context_boundfield_render.html"
f = FirstNameForm()
try:
f.render()
except RecursionError:
self.fail("Cyclic reference in BoundField.render().")
def test_legend_tag(self):
class CustomFrameworkForm(FrameworkForm):
template_name = "forms_tests/legend_test.html"
required_css_class = "required"
f = CustomFrameworkForm()
self.assertHTMLEqual(
str(f),
'<label for="id_name" class="required">Name:</label>'
'<legend class="required">Language:</legend>',
)