Fixed #6755: model inheritance now works in the admin. Thanks, sloonz and Michael Placentra.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@8033 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/model_inheritance_regress/models.py

@@ -159,4 +159,19 @@ Traceback (most recent call last):
 ...
 DoesNotExist: ItalianRestaurant matching query does not exist.
 
+# Regression test for #6755
+>>> r = Restaurant(serves_pizza=False)
+>>> r.save()
+>>> r.id
+3
+>>> r.place_ptr_id
+3
+>>> r = Restaurant(place_ptr_id=3, serves_pizza=True)
+>>> r.save()
+>>> r.id
+3
+>>> r.place_ptr_id
+3
+
+
 """}