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Fixed #34779 -- Avoided unnecessary selection of non-nullable m2m fields without natural keys during serialization.

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By using `select_related(None)` instead of `select_related()`, the
unnecessary joins are completely avoided. Note that the current tests
already covers the change, when the field is not `null=True`.

Regression in f9936deed1.
This commit is contained in:
Juan Alvarez
2023-08-15 16:53:30 -03:00
committed by Mariusz Felisiak
parent 6b965c6000
commit 517d3bb4dd
4 changed files with 13 additions and 3 deletions
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4
docs/releases/4.2.5.txt
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@@ -16,3 +16,7 @@ Bugfixes
* Fixed a bug in Django 4.2 where the deprecated ``DEFAULT_FILE_STORAGE`` and
``STATICFILES_STORAGE`` settings were not synced with ``STORAGES``
(:ticket:`34773`).
* Fixed a regression in Django 4.2.2 that caused an unnecessary selection of a
non-nullable ``ManyToManyField`` without a natural key during serialization
(:ticket:`34779`).