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Fixed #22640 -- Raised TypeError when instantiating model with keyword and positional args for the same field.

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This commit is contained in:
Jacob Walls
2021-02-27 18:56:44 -05:00
committed by Mariusz Felisiak
parent 712fe12466
commit 73b1b225ce
2 changed files with 14 additions and 1 deletions
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6
django/db/models/base.py
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@@ -442,7 +442,11 @@ class Model(metaclass=ModelBase):
if val is _DEFERRED:
continue
_setattr(self, field.attname, val)
kwargs.pop(field.name, None)
if kwargs.pop(field.name, NOT_PROVIDED) is not NOT_PROVIDED:
raise TypeError(
f"{cls.__qualname__}() got both positional and "
f"keyword arguments for field '{field.name}'."
)
# Now we're left with the unprocessed fields that *must* come from
# keywords, or default.

9
tests/basic/tests.py
View File

@@ -68,6 +68,15 @@ class ModelInstanceCreationTests(TestCase):
a.save()
self.assertEqual(a.headline, 'Fourth article')
def test_positional_and_keyword_args_for_the_same_field(self):
msg = "Article() got both positional and keyword arguments for field '%s'."
with self.assertRaisesMessage(TypeError, msg % 'headline'):
Article(None, 'Fifth article', headline='Other headline.')
with self.assertRaisesMessage(TypeError, msg % 'headline'):
Article(None, 'Sixth article', headline='')
with self.assertRaisesMessage(TypeError, msg % 'pub_date'):
Article(None, 'Seventh article', datetime(2021, 3, 1), pub_date=None)
def test_cannot_create_instance_with_invalid_kwargs(self):
with self.assertRaisesMessage(TypeError, "Article() got an unexpected keyword argument 'foo'"):
Article(