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c8b6594305
Subquery deconstruction support required implementing complex and
expensive equality rules for sql.Query objects for little benefit as
the latter cannot themselves be made deconstructible to their reference
to model classes.
Making Expression @deconstructible and not BaseExpression allows
interested parties to conform to the "expression" API even if they are
not deconstructible as it's only a requirement for expressions allowed
in Model fields and meta options (e.g. constraints, indexes).
Thanks Phillip Cutter for the report.
This also fixes a performance regression in bbf141bcdc.
75 lines
3.1 KiB
Plaintext
75 lines
3.1 KiB
Plaintext
==========================
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Django 3.2.1 release notes
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==========================
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*Expected May 4, 2021*
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Django 3.2.1 fixes several bugs in 3.2.
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Bugfixes
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========
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* Corrected detection of GDAL 3.2 on Windows (:ticket:`32544`).
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* Fixed a bug in Django 3.2 where subclasses of ``BigAutoField`` and
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``SmallAutoField`` were not allowed for the :setting:`DEFAULT_AUTO_FIELD`
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setting (:ticket:`32620`).
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* Fixed a regression in Django 3.2 that caused a crash of
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``QuerySet.values()/values_list()`` after ``QuerySet.union()``,
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``intersection()``, and ``difference()`` when it was ordered by an
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unannotated field (:ticket:`32627`).
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* Restored, following a regression in Django 3.2, displaying an exception
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message on the technical 404 debug page (:ticket:`32637`).
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* Fixed a bug in Django 3.2 where a system check would crash on a reverse
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one-to-one relationships in ``CheckConstraint.check`` or
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``UniqueConstraint.condition`` (:ticket:`32635`).
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* Fixed a regression in Django 3.2 that caused a crash of
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:attr:`.ModelAdmin.search_fields` when searching against phrases with
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unbalanced quotes (:ticket:`32649`).
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* Fixed a bug in Django 3.2 where variable lookup errors were logged rendering
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the sitemap template if alternates were not defined (:ticket:`32648`).
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* Fixed a regression in Django 3.2 that caused a crash when combining ``Q()``
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objects which contains boolean expressions (:ticket:`32548`).
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* Fixed a regression in Django 3.2 that caused a crash of ``QuerySet.update()``
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on a queryset ordered by inherited or joined fields on MySQL and MariaDB
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(:ticket:`32645`).
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* Fixed a regression in Django 3.2 that caused a crash when decoding a cookie
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value, used by ``django.contrib.messages.storage.cookie.CookieStorage``, in
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the pre-Django 3.2 format (:ticket:`32643`).
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* Fixed a regression in Django 3.2 that stopped the shift-key modifier
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selecting multiple rows in the admin changelist (:ticket:`32647`).
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* Fixed a bug in Django 3.2 where a system check would crash on the
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:setting:`STATICFILES_DIRS` setting with a list of 2-tuples of
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``(prefix, path)`` (:ticket:`32665`).
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* Fixed a long standing bug involving queryset bitwise combination when used
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with subqueries that began manifesting in Django 3.2, due to a separate fix
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using ``Exists`` to ``exclude()`` multi-valued relationships
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(:ticket:`32650`).
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* Fixed a bug in Django 3.2 where variable lookup errors were logged when
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rendering some admin templates (:ticket:`32681`).
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* Fixed a bug in Django 3.2 where an admin changelist would crash when deleting
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objects filtered against multi-valued relationships (:ticket:`32682`). The
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admin changelist now uses ``Exists()`` instead ``QuerySet.distinct()``
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because calling ``delete()`` after ``distinct()`` is not allowed in Django
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3.2 to address a data loss possibility.
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* Fixed a regression in Django 3.2 where the calling process environment would
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not be passed to the ``dbshell`` command on PostgreSQL (:ticket:`32687`).
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* Fixed a performance regression in Django 3.2 when building complex filters
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with subqueries (:ticket:`32632`). As a side-effect the private API to check
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``django.db.sql.query.Query`` equality is removed.
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