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| author | Keryn Knight <keryn@kerynknight.com> | 2026-01-10 08:39:45 +0100 |
|---|---|---|
| committer | Mariusz Felisiak <felisiak.mariusz@gmail.com> | 2026-03-11 18:05:44 +0100 |
| commit | 804607df0e174c524a3ea880b8ecbb555ecb4abb (patch) | |
| tree | 8d602a76d9cdcbec2357a96588e68886bb3bd705 /django/contrib/contenttypes | |
| parent | 8d8a8713432a88737c4400610eef11c5c8457b86 (diff) | |
Refs #28455 -- Avoided QuerySet cloning in simple prefetch_related() usages.
manager.get_queryset() always returns freshly instantiated per-instance
QuerySet which doesn't need subsequent cloning.
Based on work originally done by Anssi Kääriäinen and Tim Graham.
Diffstat (limited to 'django/contrib/contenttypes')
| -rw-r--r-- | django/contrib/contenttypes/fields.py | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/django/contrib/contenttypes/fields.py b/django/contrib/contenttypes/fields.py index 300fec4289..0d7ef0f256 100644 --- a/django/contrib/contenttypes/fields.py +++ b/django/contrib/contenttypes/fields.py @@ -651,11 +651,12 @@ def create_generic_related_manager(superclass, rel): Filter the queryset for the instance this manager is bound to. """ db = self._db or router.db_for_read(self.model, instance=self.instance) - return ( - queryset.using(db) - .fetch_mode(self.instance._state.fetch_mode) - .filter(**self.core_filters) - ) + with queryset._avoid_cloning(): + return ( + queryset.using(db) + .fetch_mode(self.instance._state.fetch_mode) + .filter(**self.core_filters) + ) def _remove_prefetched_objects(self): try: |