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Code Issues 32 Releases Wiki Activity

Fixed #4136 -- Made ModelForm save empty values for nullable CharFields as NULL.

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Previously, empty values were saved as strings.
This commit is contained in:
Jon Dufresne
2016-05-18 07:30:42 -07:00
committed by Tim Graham
parent f2c0eb19e9
commit 267dc4addd
9 changed files with 66 additions and 18 deletions
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34
tests/model_forms/tests.py
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@@ -28,9 +28,10 @@ from .models import (
CustomErrorMessage, CustomFF, CustomFieldForExclusionModel, DateTimePost,
DerivedBook, DerivedPost, Document, ExplicitPK, FilePathModel,
FlexibleDatePost, Homepage, ImprovedArticle, ImprovedArticleWithParentLink,
Inventory, Person, Photo, Post, Price, Product, Publication,
PublicationDefaults, StrictAssignmentAll, StrictAssignmentFieldSpecific,
Student, StumpJoke, TextFile, Triple, Writer, WriterProfile, test_images,
Inventory, NullableUniqueCharFieldModel, Person, Photo, Post, Price,
Product, Publication, PublicationDefaults, StrictAssignmentAll,
StrictAssignmentFieldSpecific, Student, StumpJoke, TextFile, Triple,
Writer, WriterProfile, test_images,
)
if test_images:
@@ -270,6 +271,21 @@ class ModelFormBaseTest(TestCase):
obj = form.save()
self.assertEqual(obj.name, '')
def test_save_blank_null_unique_charfield_saves_null(self):
form_class = modelform_factory(model=NullableUniqueCharFieldModel, fields=['codename'])
empty_value = '' if connection.features.interprets_empty_strings_as_nulls else None
form = form_class(data={'codename': ''})
self.assertTrue(form.is_valid())
form.save()
self.assertEqual(form.instance.codename, empty_value)
# Save a second form to verify there isn't a unique constraint violation.
form = form_class(data={'codename': ''})
self.assertTrue(form.is_valid())
form.save()
self.assertEqual(form.instance.codename, empty_value)
def test_missing_fields_attribute(self):
message = (
"Creating a ModelForm without either the 'fields' attribute "
@@ -800,10 +816,14 @@ class UniqueTest(TestCase):
form.save()
form = ExplicitPKForm({'key': 'key1', 'desc': ''})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 3)
self.assertEqual(form.errors['__all__'], ['Explicit pk with this Key and Desc already exists.'])
self.assertEqual(form.errors['desc'], ['Explicit pk with this Desc already exists.'])
self.assertEqual(form.errors['key'], ['Explicit pk with this Key already exists.'])
if connection.features.interprets_empty_strings_as_nulls:
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['key'], ['Explicit pk with this Key already exists.'])
else:
self.assertEqual(len(form.errors), 3)
self.assertEqual(form.errors['__all__'], ['Explicit pk with this Key and Desc already exists.'])
self.assertEqual(form.errors['desc'], ['Explicit pk with this Desc already exists.'])
self.assertEqual(form.errors['key'], ['Explicit pk with this Key already exists.'])
def test_unique_for_date(self):
p = Post.objects.create(