#30238: Exception when saving model created with string for DateField
-------------------------------------+-------------------------------------
     Reporter:  Mitchell Harvey      |                    Owner:  nobody
         Type:  Bug                  |                   Status:  closed
    Component:  Database layer       |                  Version:  2.1
  (models, ORM)                      |
     Severity:  Normal               |               Resolution:  invalid
     Keywords:                       |             Triage Stage:
                                     |  Unreviewed
    Has patch:  0                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  1                    |                    UI/UX:  0
-------------------------------------+-------------------------------------
Changes (by Carlton Gibson):

 * status:  new => closed
 * resolution:   => invalid


Comment:

 The `AttributeError` is not raised. This test fails as the
 `assertRaisesMessage()` call:

 {{{
 class Tests(TestCase):

     def test_attribute_error_stops_save(self):

         my_model_args = { 'worthless_field' : '2019-02-07'}
         myExceptionalModel = MyModel( **my_model_args)

         msg = "'str' object has no attribute 'isoformat'"
         with self.assertRaisesMessage(AttributeError, msg):
             myExceptionalModel.save()

         self.assertEqual(0, MyModel.objects.count())
 }}}

 Behaviour is as expected:


 {{{
 >>> myExceptionalModel.save()
 >>> myExceptionalModel.refresh_from_db()
 >>> myExceptionalModel.worthless_field
 datetime.date(2019, 2, 7)
 }}}

 Sample app with model and test case attached.

-- 
Ticket URL: <https://code.djangoproject.com/ticket/30238#comment:1>
Django <https://code.djangoproject.com/>
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