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288 lines
5.4 KiB
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288 lines
5.4 KiB
Plaintext
============================================
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Django 3.2 release notes - UNDER DEVELOPMENT
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============================================
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*Expected April 2021*
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Welcome to Django 3.2!
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These release notes cover the :ref:`new features <whats-new-3.2>`, as well as
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some :ref:`backwards incompatible changes <backwards-incompatible-3.2>` you'll
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want to be aware of when upgrading from Django 3.1 or earlier. We've
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:ref:`begun the deprecation process for some features
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<deprecated-features-3.2>`.
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See the :doc:`/howto/upgrade-version` guide if you're updating an existing
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project.
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Django 3.2 is designated as a :term:`long-term support release
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<Long-term support release>`. It will receive security updates for at least
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three years after its release. Support for the previous LTS, Django 2.2, will
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end in April 2022.
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Python compatibility
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====================
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Django 3.2 supports Python 3.6, 3.7, and 3.8. We **highly recommend** and only
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officially support the latest release of each series.
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.. _whats-new-3.2:
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What's new in Django 3.2
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========================
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Minor features
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--------------
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:mod:`django.contrib.admin`
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ...
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:mod:`django.contrib.admindocs`
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ...
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:mod:`django.contrib.auth`
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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* The default iteration count for the PBKDF2 password hasher is increased from
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216,000 to 260,000.
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:mod:`django.contrib.contenttypes`
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ...
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:mod:`django.contrib.gis`
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~~~~~~~~~~~~~~~~~~~~~~~~~
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* ...
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:mod:`django.contrib.messages`
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ...
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:mod:`django.contrib.postgres`
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ...
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:mod:`django.contrib.redirects`
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ...
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:mod:`django.contrib.sessions`
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ...
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:mod:`django.contrib.sitemaps`
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ...
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:mod:`django.contrib.sites`
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ...
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:mod:`django.contrib.staticfiles`
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ...
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:mod:`django.contrib.syndication`
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ...
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Cache
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~~~~~
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* ...
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CSRF
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~~~~
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* ...
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Email
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~~~~~
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* ...
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Error Reporting
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~~~~~~~~~~~~~~~
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* ...
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File Storage
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~~~~~~~~~~~~
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* ...
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File Uploads
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~~~~~~~~~~~~
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* ...
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Forms
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~~~~~
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* ...
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Generic Views
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~~~~~~~~~~~~~
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* ...
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Internationalization
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~~~~~~~~~~~~~~~~~~~~
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* ...
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Logging
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~~~~~~~
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* ...
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Management Commands
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~~~~~~~~~~~~~~~~~~~
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* :djadmin:`loaddata` now supports fixtures stored in XZ archives (``.xz``) and
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LZMA archives (``.lzma``).
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* :djadmin:`makemigrations` can now be called without an active database
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connection. In that case, check for a consistent migration history is
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skipped.
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* :attr:`.BaseCommand.requires_system_checks` now supports specifying a list of
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tags. System checks registered in the chosen tags will be checked for errors
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prior to executing the command. In previous versions, either all or none
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of the system checks were performed.
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Migrations
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~~~~~~~~~~
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* ...
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Models
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~~~~~~
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* The new ``no_key`` parameter for :meth:`.QuerySet.select_for_update()`,
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supported on PostgreSQL, allows acquiring weaker locks that don't block the
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creation of rows that reference locked rows through a foreign key.
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* :class:`When() <django.db.models.expressions.When>` expression now allows
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using the ``condition`` argument with ``lookups``.
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Requests and Responses
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~~~~~~~~~~~~~~~~~~~~~~
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* ...
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Security
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~~~~~~~~
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* ...
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Serialization
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~~~~~~~~~~~~~
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* ...
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Signals
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~~~~~~~
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* ...
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Templates
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~~~~~~~~~
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* ...
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Tests
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~~~~~
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* Objects assigned to class attributes in :meth:`.TestCase.setUpTestData` are
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now isolated for each test method. Such objects are now required to support
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creating deep copies with :py:func:`copy.deepcopy`. Assigning objects which
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don't support ``deepcopy()`` is deprecated and will be removed in Django 4.1.
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URLs
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~~~~
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* ...
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Utilities
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~~~~~~~~~
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* ...
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Validators
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~~~~~~~~~~
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* ...
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.. _backwards-incompatible-3.2:
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Backwards incompatible changes in 3.2
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=====================================
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Database backend API
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--------------------
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This section describes changes that may be needed in third-party database
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backends.
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* ...
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:mod:`django.contrib.gis`
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-------------------------
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* Support for PostGIS 2.2 is removed.
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Dropped support for PostgreSQL 9.5
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----------------------------------
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Upstream support for PostgreSQL 9.5 ends in February 2021. Django 3.2 supports
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PostgreSQL 9.6 and higher.
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Dropped support for MySQL 5.6
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-----------------------------
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The end of upstream support for MySQL 5.6 is April 2021. Django 3.2 supports
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MySQL 5.7 and higher.
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Miscellaneous
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-------------
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* The undocumented ``SpatiaLiteOperations.proj4_version()`` method is renamed
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to ``proj_version()``.
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* Minified JavaScript files are no longer included with the admin. If you
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require these files to be minified, consider using a third party app or
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external build tool. The minified vendored JavaScript files packaged with the
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admin (e.g. :ref:`jquery.min.js <contrib-admin-jquery>`) are still included.
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.. _deprecated-features-3.2:
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Features deprecated in 3.2
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==========================
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Miscellaneous
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-------------
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* Assigning objects which don't support creating deep copies with
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:py:func:`copy.deepcopy` to class attributes in
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:meth:`.TestCase.setUpTestData` is deprecated.
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* Using a boolean value in :attr:`.BaseCommand.requires_system_checks` is
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deprecated. Use ``'__all__'`` instead of ``True``, and ``[]`` (an empty list)
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instead of ``False``.
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