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Fixed #32682 -- Made admin changelist use Exists() instead of distinct() for preventing duplicates.

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Thanks Zain Patel for the report and Simon Charette for reviews.

The exception introduced in 6307c3f1a1
revealed a possible data loss issue in the admin.
This commit is contained in:
Mariusz Felisiak 2021-04-26 09:22:46 +02:00
parent cd74aad90e
commit 1871182031
3 changed files with 70 additions and 32 deletions
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6
docs/releases/3.2.1.txt
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@ -59,3 +59,9 @@ Bugfixes
* Fixed a bug in Django 3.2 where variable lookup errors were logged when
rendering some admin templates (:ticket:`32681`).
* Fixed a bug in Django 3.2 where an admin changelist would crash when deleting
objects filtered against multi-valued relationships (:ticket:`32682`). The
admin changelist now uses ``Exists()`` instead ``QuerySet.distinct()``
because calling ``delete()`` after ``distinct()`` is not allowed in Django
3.2 to address a data loss possibility.