diff options
Diffstat (limited to 'django/db')
| -rw-r--r-- | django/db/models/query.py | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/django/db/models/query.py b/django/db/models/query.py index 5069c419d1..c5e8b432fe 100644 --- a/django/db/models/query.py +++ b/django/db/models/query.py @@ -1471,10 +1471,15 @@ def prefetch_related_objects(model_instances, *related_lookups): # that we can continue with nullable or reverse relations. new_obj_list = [] for obj in obj_list: - try: - new_obj = getattr(obj, through_attr) - except exceptions.ObjectDoesNotExist: - continue + if through_attr in getattr(obj, '_prefetched_objects_cache', ()): + # If related objects have been prefetched, use the + # cache rather than the object's through_attr. + new_obj = list(obj._prefetched_objects_cache.get(through_attr)) + else: + try: + new_obj = getattr(obj, through_attr) + except exceptions.ObjectDoesNotExist: + continue if new_obj is None: continue # We special-case `list` rather than something more generic |