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Ticket #17648: ticket-17648-contenttype-manager-get_for_model-proxy.diff

File ticket-17648-contenttype-manager-get_for_model-proxy.diff, 1.3 KB (added by Simon Charette, 13 years ago)
Make sure `ContentType.get_for_model(s)` returns the correct `ContentType` for proxy models without breaking dereferred model compatibility introduced for #10738.

diff --git a/django/contrib/contenttypes/models.py b/django/contrib/contenttypes/models.py
index 1bb07e0..d03f770 100644

                def get_by_natural_key(self, app_label, model):
     def _get_opts(self, model):
         opts = model._meta
+        while opts.proxy:
+            model = opts.proxy_for_model
+            opts = model._meta
+        if model._deferred:
+            opts = opts.proxy_for_model._meta
         return opts
     def _get_from_cache(self, opts):

diff --git a/tests/modeltests/proxy_models/tests.py b/tests/modeltests/proxy_models/tests.py
index 3ec8465..04ea203 100644

                def _handler(*args, **kwargs):
         signals.post_save.disconnect(h6, sender=MyPersonProxy)
     def test_content_type(self):
+        # A model and a proxy of this model do not
+        # share the same ContentType see #17648
         ctype = ContentType.objects.get_for_model
         self.assertTrue(ctype(Person) is ctype(OtherPerson))
+        self.assertFalse(ctype(Person) is ctype(OtherPerson))
     def test_user_userproxy_userproxyproxy(self):
         User.objects.create(name='Bruce')