Ticket #3480: 3480.diff

django/core/management/sql.py

@@ -116 +116 @@
     "Returns a list of the DROP TABLE SQL statements for the given app."
     from django.db import connection, models, get_introspection_module
     from django.db.backends.util import truncate_name
+    from django.contrib.contenttypes import generic
     introspection = get_introspection_module()
 
     # This should work even if a connection isn't available
@@ -179 +180 @@
     for model in app_models:
         opts = model._meta
         for f in opts.many_to_many:
-            if cursor and table_name_converter(f.m2m_db_table()) in table_names:
-                output.append("%s %s;" % (style.SQL_KEYWORD('DROP TABLE'),
-                    style.SQL_TABLE(qn(f.m2m_db_table()))))
-                ds = connection.ops.drop_sequence_sql("%s_%s" % (model._meta.db_table, f.column))
-                if ds:
-                    output.append(ds)
+            if not isinstance(f.rel, generic.GenericRel):
+                if cursor and table_name_converter(f.m2m_db_table()) in table_names:
+                    output.append("%s %s;" % (style.SQL_KEYWORD('DROP TABLE'),
+                        style.SQL_TABLE(qn(f.m2m_db_table()))))
+                    ds = connection.ops.drop_sequence_sql("%s_%s" % (model._meta.db_table, f.column))
+                    if ds:
+                        output.append(ds)
 
     app_label = app_models[0]._meta.app_label