diff options
| author | Iain Watts <iain@rover.com> | 2019-05-15 16:09:16 -0700 |
|---|---|---|
| committer | Mariusz Felisiak <felisiak.mariusz@gmail.com> | 2019-05-16 21:39:55 +0200 |
| commit | 59ffafa1d2f466fa7aacbe74fe2787b2004b7871 (patch) | |
| tree | 40f3bcab87648184de222f72c17608f680dbeba6 /django/db | |
| parent | 4442ee8a51ad04730e4af2833728c345042b69cf (diff) | |
Fixed #30482 -- Prevented unnecessary evaluation of lookup.queryset in prefetch_related_objects().
Diffstat (limited to 'django/db')
| -rw-r--r-- | django/db/models/query.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/django/db/models/query.py b/django/db/models/query.py index a21a091af0..1544beb613 100644 --- a/django/db/models/query.py +++ b/django/db/models/query.py @@ -1556,7 +1556,7 @@ def prefetch_related_objects(model_instances, *related_lookups): while all_lookups: lookup = all_lookups.pop() if lookup.prefetch_to in done_queries: - if lookup.queryset: + if lookup.queryset is not None: raise ValueError("'%s' lookup was already seen with a different queryset. " "You may need to adjust the ordering of your lookups." % lookup.prefetch_to) |