Commit e118e3af authored by Adam DePue's avatar Adam DePue Committed by Tim Graham
Browse files

Fixed #23761 -- Added test for MySQL validator and db_type is None. 

The issue was fixed on master in e9103402
so this just forwardports the test and release notes from stable/1.7.x.

Forwardport of 2d12a599 from stable/1.7.x
parent 7ef81b5c

docs/releases/1.7.2.txt

+4 −1
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@@ -51,8 +51,11 @@ Bugfixes 
  (:ticket:`23420`).



* Fixed a migration serializing bug involving ``float("nan")`` and

  ``float("inf")`` (:ticket:23770:).

  ``float("inf")`` (:ticket:`23770`).



* Fixed a regression where custom form fields having a ``queryset`` attribute

  but no ``limit_choices_to`` could not be used in a

  :class:`~django.forms.ModelForm` (:ticket:`23795`).



* Fixed a custom field type validation error with MySQL backend when

  ``db_type`` returned ``None`` (:ticket:`23761`).

tests/invalid_models_tests/test_custom_fields.py

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from django.db import models



from .base import IsolatedModelsTestCase





class CustomFieldTest(IsolatedModelsTestCase):



    def test_none_column(self):

        class NoColumnField(models.AutoField):

            def db_type(self, connection):

                # None indicates not to create a column in the database.

                return None



        class Model(models.Model):

            field = NoColumnField(primary_key=True, db_column="other_field")

            other_field = models.IntegerField()



        field = Model._meta.get_field('field')

        errors = field.check()

        self.assertEqual(errors, [])