gis: Fixed `_post_create_sql` hook to not generate additional SQL for fields belonging to a parent model via model inheritance. Thanks, robotika.

git-svn-id: http://code.djangoproject.com/svn/django/branches/gis@7513 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 6 insertions, 3 deletions

diff --git a/django/core/management/sql.py b/django/core/management/sql.py
index 42119915af..dcfe60e95b 100644
--- a/django/core/management/sql.py
+++ b/django/core/management/sql.py
@@ -436,9 +436,12 @@ def custom_sql_for_model(model, style):
     output = []
 
     # Post-creation SQL should come before any initial SQL data is loaded.
-    for f in opts.fields:
-        if hasattr(f, '_post_create_sql'):
-            output.extend(f._post_create_sql(style, model._meta.db_table))
+    # However, this should not be done for fields that are part of a 
+    # a parent model (via model inheritance).
+    nm = opts.init_name_map()
+    post_sql_fields = [f for f in opts.fields if nm[f.name][1] is None and hasattr(f, '_post_create_sql')]
+    for f in post_sql_fields:
+        output.extend(f._post_create_sql(style, model._meta.db_table))
 
     # Some backends can't execute more than one SQL statement at a time,
     # so split into separate statements.