mirror of
https://github.com/django/django.git
synced 2024-12-23 17:46:27 +00:00
355 lines
8.5 KiB
Plaintext
355 lines
8.5 KiB
Plaintext
============================================
|
|
Django 4.1 release notes - UNDER DEVELOPMENT
|
|
============================================
|
|
|
|
*Expected August 2022*
|
|
|
|
Welcome to Django 4.1!
|
|
|
|
These release notes cover the :ref:`new features <whats-new-4.1>`, as well as
|
|
some :ref:`backwards incompatible changes <backwards-incompatible-4.1>` you'll
|
|
want to be aware of when upgrading from Django 4.0 or earlier. We've
|
|
:ref:`begun the deprecation process for some features
|
|
<deprecated-features-4.1>`.
|
|
|
|
See the :doc:`/howto/upgrade-version` guide if you're updating an existing
|
|
project.
|
|
|
|
Python compatibility
|
|
====================
|
|
|
|
Django 4.1 supports Python 3.8, 3.9, and 3.10. We **highly recommend** and only
|
|
officially support the latest release of each series.
|
|
|
|
.. _whats-new-4.1:
|
|
|
|
What's new in Django 4.1
|
|
========================
|
|
|
|
.. _csrf-cookie-masked-usage:
|
|
|
|
``CSRF_COOKIE_MASKED`` setting
|
|
------------------------------
|
|
|
|
The new :setting:`CSRF_COOKIE_MASKED` transitional setting allows specifying
|
|
whether to mask the CSRF cookie.
|
|
|
|
:class:`~django.middleware.csrf.CsrfViewMiddleware` no longer masks the CSRF
|
|
cookie like it does the CSRF token in the DOM. If you are upgrading multiple
|
|
instances of the same project to Django 4.1, you should set
|
|
:setting:`CSRF_COOKIE_MASKED` to ``True`` during the transition, in
|
|
order to allow compatibility with the older versions of Django. Once the
|
|
transition to 4.1 is complete you can stop overriding
|
|
:setting:`CSRF_COOKIE_MASKED`.
|
|
|
|
This setting is deprecated as of this release and will be removed in Django
|
|
5.0.
|
|
|
|
Minor features
|
|
--------------
|
|
|
|
:mod:`django.contrib.admin`
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
* The admin :ref:`dark mode CSS variables <admin-theming>` are now applied in a
|
|
separate stylesheet and template block.
|
|
|
|
* :ref:`modeladmin-list-filters` providing custom ``FieldListFilter``
|
|
subclasses can now control the query string value separator when filtering
|
|
for multiple values using the ``__in`` lookup.
|
|
|
|
:mod:`django.contrib.admindocs`
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
:mod:`django.contrib.auth`
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
* The default iteration count for the PBKDF2 password hasher is increased from
|
|
320,000 to 390,000.
|
|
|
|
:mod:`django.contrib.contenttypes`
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
:mod:`django.contrib.gis`
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
* The new :meth:`.GEOSGeometry.make_valid()` method allows converting invalid
|
|
geometries to valid ones.
|
|
|
|
:mod:`django.contrib.messages`
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
:mod:`django.contrib.postgres`
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
* The new :class:`BitXor() <django.contrib.postgres.aggregates.BitXor>`
|
|
aggregate function returns an ``int`` of the bitwise ``XOR`` of all non-null
|
|
input values.
|
|
|
|
* :class:`~django.contrib.postgres.indexes.SpGistIndex` now supports covering
|
|
indexes on PostgreSQL 14+.
|
|
|
|
* :class:`~django.contrib.postgres.constraints.ExclusionConstraint` now
|
|
supports covering exclusion constraints using SP-GiST indexes on PostgreSQL
|
|
14+.
|
|
|
|
* The new ``default_bounds`` attribute of :attr:`DateTimeRangeField
|
|
<django.contrib.postgres.fields.DateTimeRangeField.default_bounds>` and
|
|
:attr:`DecimalRangeField
|
|
<django.contrib.postgres.fields.DecimalRangeField.default_bounds>` allows
|
|
specifying bounds for list and tuple inputs.
|
|
|
|
:mod:`django.contrib.redirects`
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
:mod:`django.contrib.sessions`
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
:mod:`django.contrib.sitemaps`
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
* The default sitemap index template ``<sitemapindex>`` now includes the
|
|
``<lastmod>`` timestamp where available, through the new
|
|
:meth:`~django.contrib.sitemaps.Sitemap.get_latest_lastmod` method. Custom
|
|
sitemap index templates should be updated for the adjusted :ref:`context
|
|
variables <sitemap-index-context-variables>`.
|
|
|
|
:mod:`django.contrib.sites`
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
:mod:`django.contrib.staticfiles`
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
:mod:`django.contrib.syndication`
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
Cache
|
|
~~~~~
|
|
|
|
* ...
|
|
|
|
CSRF
|
|
~~~~
|
|
|
|
* ...
|
|
|
|
Decorators
|
|
~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
Email
|
|
~~~~~
|
|
|
|
* ...
|
|
|
|
Error Reporting
|
|
~~~~~~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
File Storage
|
|
~~~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
File Uploads
|
|
~~~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
Forms
|
|
~~~~~
|
|
|
|
* The new :meth:`~django.forms.BoundField.legend_tag` allows rendering field
|
|
labels in ``<legend>`` tags via the new ``tag`` argument of
|
|
:meth:`~django.forms.BoundField.label_tag`.
|
|
|
|
Generic Views
|
|
~~~~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
Internationalization
|
|
~~~~~~~~~~~~~~~~~~~~
|
|
|
|
* The :func:`~django.conf.urls.i18n.i18n_patterns` function now supports
|
|
languages with both scripts and regions.
|
|
|
|
Logging
|
|
~~~~~~~
|
|
|
|
* ...
|
|
|
|
Management Commands
|
|
~~~~~~~~~~~~~~~~~~~
|
|
|
|
* :option:`makemigrations --no-input` now logs default answers and reasons why
|
|
migrations cannot be created.
|
|
|
|
Migrations
|
|
~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
Models
|
|
~~~~~~
|
|
|
|
* The ``order_by`` argument of the
|
|
:class:`~django.db.models.expressions.Window` expression now accepts string
|
|
references to fields and transforms.
|
|
|
|
* The new :setting:`CONN_HEALTH_CHECKS` setting allows enabling health checks
|
|
for :ref:`persistent database connections <persistent-database-connections>`
|
|
in order to reduce the number of failed requests, e.g. after database server
|
|
restart.
|
|
|
|
Requests and Responses
|
|
~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
Security
|
|
~~~~~~~~
|
|
|
|
* ...
|
|
|
|
Serialization
|
|
~~~~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
Signals
|
|
~~~~~~~
|
|
|
|
* ...
|
|
|
|
Templates
|
|
~~~~~~~~~
|
|
|
|
* :tfilter:`json_script` template filter now allows wrapping in a ``<script>``
|
|
tag without the HTML ``id`` attribute.
|
|
|
|
Tests
|
|
~~~~~
|
|
|
|
* A nested atomic block marked as durable in :class:`django.test.TestCase` now
|
|
raises a ``RuntimeError``, the same as outside of tests.
|
|
|
|
URLs
|
|
~~~~
|
|
|
|
* ...
|
|
|
|
Utilities
|
|
~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
Validators
|
|
~~~~~~~~~~
|
|
|
|
* ...
|
|
|
|
.. _backwards-incompatible-4.1:
|
|
|
|
Backwards incompatible changes in 4.1
|
|
=====================================
|
|
|
|
Database backend API
|
|
--------------------
|
|
|
|
This section describes changes that may be needed in third-party database
|
|
backends.
|
|
|
|
* ``BaseDatabaseFeatures.has_case_insensitive_like`` is changed from ``True``
|
|
to ``False`` to reflect the behavior of most databases.
|
|
|
|
* ``DatabaseIntrospection.get_key_columns()`` is removed. Use
|
|
``DatabaseIntrospection.get_relations()`` instead.
|
|
|
|
Dropped support for MariaDB 10.2
|
|
--------------------------------
|
|
|
|
Upstream support for MariaDB 10.2 ends in May 2022. Django 4.1 supports MariaDB
|
|
10.3 and higher.
|
|
|
|
Miscellaneous
|
|
-------------
|
|
|
|
* Related managers for :class:`~django.db.models.ForeignKey`,
|
|
:class:`~django.db.models.ManyToManyField`, and
|
|
:class:`~django.contrib.contenttypes.fields.GenericRelation` are now cached
|
|
on the :class:`~django.db.models.Model` instance to which they belong.
|
|
|
|
* The Django test runner now returns a non-zero error code for unexpected
|
|
successes from tests marked with :py:func:`unittest.expectedFailure`.
|
|
|
|
* :class:`~django.middleware.csrf.CsrfViewMiddleware` no longer masks the CSRF
|
|
cookie like it does the CSRF token in the DOM.
|
|
|
|
* :class:`~django.middleware.csrf.CsrfViewMiddleware` now uses
|
|
``request.META['CSRF_COOKIE']`` for storing the unmasked CSRF secret rather
|
|
than a masked version. This is an undocumented, private API.
|
|
|
|
.. _deprecated-features-4.1:
|
|
|
|
Features deprecated in 4.1
|
|
==========================
|
|
|
|
Miscellaneous
|
|
-------------
|
|
|
|
* The context for sitemap index templates of a flat list of URLs is deprecated.
|
|
Custom sitemap index templates should be updated for the adjusted
|
|
:ref:`context variables <sitemap-index-context-variables>`, expecting a list
|
|
of objects with ``location`` and optional ``lastmod`` attributes.
|
|
|
|
* ``CSRF_COOKIE_MASKED`` transitional setting is deprecated.
|
|
|
|
Features removed in 4.1
|
|
=======================
|
|
|
|
These features have reached the end of their deprecation cycle and are removed
|
|
in Django 4.1.
|
|
|
|
See :ref:`deprecated-features-3.2` for details on these changes, including how
|
|
to remove usage of these features.
|
|
|
|
* Support for assigning objects which don't support creating deep copies with
|
|
``copy.deepcopy()`` to class attributes in ``TestCase.setUpTestData()`` is
|
|
removed.
|
|
|
|
* Support for using a boolean value in
|
|
:attr:`.BaseCommand.requires_system_checks` is removed.
|
|
|
|
* The ``whitelist`` argument and ``domain_whitelist`` attribute of
|
|
``django.core.validators.EmailValidator`` are removed.
|
|
|
|
* The ``default_app_config`` application configuration variable is removed.
|
|
|
|
* ``TransactionTestCase.assertQuerysetEqual()`` no longer calls ``repr()`` on a
|
|
queryset when compared to string values.
|
|
|
|
* The ``django.core.cache.backends.memcached.MemcachedCache`` backend is
|
|
removed.
|
|
|
|
* Support for the pre-Django 3.2 format of messages used by
|
|
``django.contrib.messages.storage.cookie.CookieStorage`` is removed.
|