Update django to 3.1.2

[pyup-bot]

This PR updates Django from 3.1 to 3.1.2.

Changelog

3.1.2

==========================

*October 1, 2020*

Django 3.1.2 fixes several bugs in 3.1.1.

Bugfixes
========

* Fixed a bug in Django 3.1 where ``FileField`` instances with a callable
storage were not correctly deconstructed (:ticket:`31941`).

* Fixed a regression in Django 3.1 where the :attr:`.QuerySet.ordered`
attribute returned incorrectly ``True`` for ``GROUP BY`` queries (e.g.
``.annotate().values()``) on models with ``Meta.ordering``. A model's
``Meta.ordering`` doesn't affect such queries (:ticket:`31990`).

* Fixed a regression in Django 3.1 where a queryset would crash if it contained
an aggregation and a ``Q`` object annotation (:ticket:`32007`).

* Fixed a bug in Django 3.1 where a test database was not synced during
creation when using the :setting:`MIGRATE <TEST_MIGRATE>` test database
setting (:ticket:`32012`).

* Fixed a ``django.contrib.admin.EmptyFieldListFilter`` crash when using on a
``GenericRelation`` (:ticket:`32038`).

* Fixed a regression in Django 3.1.1 where the admin changelist filter sidebar
would not scroll for a long list of available filters (:ticket:`31986`).


==========================

3.1.1

==========================

*September 1, 2020*

Django 3.1.1 fixes two security issues and several bugs in 3.1.

CVE-2020-24583: Incorrect permissions on intermediate-level directories on Python 3.7+
======================================================================================

On Python 3.7+, :setting:`FILE_UPLOAD_DIRECTORY_PERMISSIONS` mode was not
applied to intermediate-level directories created in the process of uploading
files and to intermediate-level collected static directories when using the
:djadmin:`collectstatic` management command.

You should review and manually fix permissions on existing intermediate-level
directories.

CVE-2020-24584: Permission escalation in intermediate-level directories of the file system cache on Python 3.7+
===============================================================================================================

On Python 3.7+, the intermediate-level directories of the file system cache had
the system's standard umask rather than ``0o077`` (no group or others
permissions).

Bugfixes
========

* Fixed wrapping of translated action labels in the admin's navigation sidebar
for East Asian languages (:ticket:`31853`).

* Fixed wrapping of long model names in the admin's navigation sidebar
(:ticket:`31854`).

* Fixed encoding session data while upgrading multiple instances of the same
project to Django 3.1 (:ticket:`31864`).

* Adjusted admin's navigation sidebar template to reduce debug logging when
rendering (:ticket:`31865`).

* Fixed a data loss possibility in the
:meth:`~django.db.models.query.QuerySet.select_for_update()`. When using
related fields pointing to a proxy model in the ``of`` argument, the
corresponding model was not locked (:ticket:`31866`).

* Fixed a data loss possibility, following a regression in Django 2.0, when
copying model instances with a cached fields value (:ticket:`31863`).

* Fixed a regression in Django 3.1 that caused a crash when decoding an invalid
session data (:ticket:`31895`).

* Reverted a deprecation in Django 3.1 that caused a crash when passing
deprecated keyword arguments to a queryset in
``TemplateView.get_context_data()`` (:ticket:`31877`).

* Enforced thread sensitivity of the :class:`MiddlewareMixin.process_request()
<django.utils.deprecation.MiddlewareMixin>` and ``process_response()`` hooks
when in an async context (:ticket:`31905`).

* Fixed ``__in`` lookup on key transforms for
:class:`~django.db.models.JSONField` with MariaDB, MySQL, Oracle, and SQLite
(:ticket:`31936`).

* Fixed a regression in Django 3.1 that caused permission errors in
``CommonPasswordValidator`` and ``settings.py`` generated by the
:djadmin:`startproject` command, when user didn't have permissions to all
intermediate directories in a Django installation path (:ticket:`31912`).

* Fixed detecting an async ``get_response`` callable in various builtin
middlewares (:ticket:`31928`).

* Fixed a ``QuerySet.order_by()`` crash on PostgreSQL when ordering and
grouping by :class:`~django.db.models.JSONField` with a custom
:attr:`~django.db.models.JSONField.decoder` (:ticket:`31956`). As a
consequence, fetching a ``JSONField`` with raw SQL now returns a string
instead of pre-loaded data. You will need to explicitly call ``json.loads()``
in such cases.

* Fixed a ``QuerySet.delete()`` crash on MySQL, following a performance
regression in Django 3.1 on MariaDB 10.3.2+, when filtering against an
aggregate function (:ticket:`31965`).

* Fixed a ``django.contrib.admin.EmptyFieldListFilter`` crash when using on
reverse relations (:ticket:`31952`).

* Prevented content overflowing in the admin changelist view when the
navigation sidebar is enabled (:ticket:`31901`).


========================

Links

• PyPI: https://pypi.org/project/django
• Changelog: https://pyup.io/changelogs/django/
• Homepage: https://www.djangoproject.com/

[coveralls]

Coverage remained the same at 100.0% when pulling b9065c3 on pyup-update-django-3.1-to-3.1.2 into 342dd81 on master.

[pyup-bot]

Closing this in favor of #116