Ticket #1972: management.diff

management.py

@@ -456 +456 @@
     for app in models.get_apps():
         model_list = models.get_models(app)
         for model in model_list:
+            # If the model has no fields, throw an error.
+            if len(model._meta.fields) == 1 and model._meta.fields[0].get_internal_type() == 'AutoField':
+                raise ImproperlyConfigured, "model '%s' in application '%s' has no fields; models must have at least one explicit non-primary-key field" % (model._meta.object_name, model._meta.app_label)
             # Create the model's database table, if it doesn't already exist.
             if model._meta.db_table in table_list:
                 continue