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newforms-admin: Fixed #5353. Added FormSet validation hook. Separated a few things out from the original patch and added more tests. Thanks, Honza Kral.

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git-svn-id: http://code.djangoproject.com/svn/django/branches/newforms-admin@6419 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Joseph Kocherhans
2007-09-25 02:42:26 +00:00
parent 9687447e31
commit b40f9b63bb
2 changed files with 111 additions and 24 deletions
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65
tests/regressiontests/forms/formsets.py
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@@ -5,8 +5,8 @@ formset_tests = """
FormSet allows us to use multiple instance of the same form on 1 page. For now,
the best way to create a FormSet is by using the formset_for_form function.
>>> from django.newforms import Form, CharField, IntegerField
>>> from django.newforms.formsets import formset_for_form
>>> from django.newforms import Form, CharField, IntegerField, ValidationError
>>> from django.newforms.formsets import formset_for_form, BaseFormSet
>>> class Choice(Form):
... choice = CharField()
@@ -420,4 +420,65 @@ True
[{'votes': 900, 'DELETE': True, 'ORDER': 2, 'choice': u'Fergie'}]
# FormSet clean hook ##########################################################
FormSets have a hook for doing extra validation that shouldn't be tied to any
particular form. It follows the same pattern as the clean hook on Forms.
Let's define a FormSet that takes a list of favorite drinks, but raises am
error if there are any duplicates.
>>> class FavoriteDrinkForm(Form):
... name = CharField()
...
>>> class FavoriteDrinksFormSet(BaseFormSet):
... form_class = FavoriteDrinkForm
... num_extra = 2
... orderable = False
... deletable = False
...
... def clean(self):
... seen_drinks = []
... for drink in self.cleaned_data:
... if drink['name'] in seen_drinks:
... raise ValidationError('You may only specify a drink once.')
... seen_drinks.append(drink['name'])
... return self.cleaned_data
...
We start out with a some duplicate data.
>>> data = {
... 'drinks-COUNT': '2',
... 'drinks-0-name': 'Gin and Tonic',
... 'drinks-1-name': 'Gin and Tonic',
... }
>>> formset = FavoriteDrinksFormSet(data, prefix='drinks')
>>> formset.is_valid()
False
Any errors raised by formset.clean() are available via the
formset.non_form_errors() method.
>>> for error in formset.non_form_errors():
... print error
You may only specify a drink once.
Make sure we didn't break the valid case.
>>> data = {
... 'drinks-COUNT': '2',
... 'drinks-0-name': 'Gin and Tonic',
... 'drinks-1-name': 'Bloody Mary',
... }
>>> formset = FavoriteDrinksFormSet(data, prefix='drinks')
>>> formset.is_valid()
True
>>> for error in formset.non_form_errors():
... print error
"""