Ticket #12105: isnull_false_filter.patch

lib/django/contrib/admin/views/main.py

@@ -184 +184 @@
             # if key ends with __in, split parameter into separate values
             if key.endswith('__in'):
                 lookup_params[key] = value.split(',')
+            elif key.endswith('__isnull'):
+                if value.lower() in ('', 'false'):
+                    lookup_params[key] = False
+                else:
+                    lookup_params[key] = True
 
         # Apply lookup parameters from the query string.
         try: