Ticket #6214: models.base.diff

base.py

@@ -40 +40 @@
 
         # Build complete list of parents
         for base in bases:
-            # TODO: Checking for the presence of '_meta' is hackish.
-            if '_meta' in dir(base):
+            if base is not Model and issubclass(base, Model):
                 new_class._meta.parents.append(base)
                 new_class._meta.parents.extend(base._meta.parents)