Opened 16 years ago
Last modified 13 years ago
#10205 closed
Update on a QuerySet with filter of field__in='' causes AttributeError — at Initial Version
| Reported by: | anonymous | Owned by: | nobody |
|---|---|---|---|
| Component: | Database layer (models, ORM) | Version: | dev |
| Severity: | Keywords: | ||
| Cc: | rico.bl@… | Triage Stage: | Accepted |
| Has patch: | yes | Needs documentation: | no |
| Needs tests: | no | Patch needs improvement: | no |
| Easy pickings: | no | UI/UX: | no |
Description
Let testfield be models.CharField TestModel.objects.filter(testfield__in='') >>> [] TestModel.objects.filter(testfield__in=()) >>> [] TestModel.objects.filter(testfield__in=()).delete() >>> TestModel.objects.filter(testfield__in='non-existent-entry').update(testfield='test') >>> 0 TestModel.objects.filter(testfield__in='').update(testfield='test') as well as TestModel.objects.filter(testfield__in=()).update(testfield='test') >>> causes following trackback:
'NoneType' object has no attribute 'rowcount'
File "C:\Python25\lib\site-packages\django\db\models\query.py" in update
- rows = query.execute_sql(None)
File "C:\Python25\lib\site-packages\django\db\models\sql\subqueries.py" in execute_sql
- rows = cursor.rowcount
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