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|
============================================
Django 4.0 release notes - UNDER DEVELOPMENT
============================================
*Expected December 2021*
Welcome to Django 4.0!
These release notes cover the :ref:`new features <whats-new-4.0>`, as well as
some :ref:`backwards incompatible changes <backwards-incompatible-4.0>` you'll
want to be aware of when upgrading from Django 3.2 or earlier. We've
:ref:`begun the deprecation process for some features
<deprecated-features-4.0>`.
See the :doc:`/howto/upgrade-version` guide if you're updating an existing
project.
Python compatibility
====================
Django 4.0 supports Python 3.8, 3.9, and 3.10. We **highly recommend** and only
officially support the latest release of each series.
.. _whats-new-4.0:
What's new in Django 4.0
========================
Minor features
--------------
:mod:`django.contrib.admin`
~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.admindocs`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.auth`
~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.contenttypes`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.gis`
~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.messages`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.postgres`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.redirects`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.sessions`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.sitemaps`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.sites`
~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.staticfiles`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.syndication`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
Cache
~~~~~
* ...
CSRF
~~~~
* ...
Decorators
~~~~~~~~~~
* ...
Email
~~~~~
* ...
Error Reporting
~~~~~~~~~~~~~~~
* ...
File Storage
~~~~~~~~~~~~
* ...
File Uploads
~~~~~~~~~~~~
* ...
Forms
~~~~~
* ...
Generic Views
~~~~~~~~~~~~~
* ...
Internationalization
~~~~~~~~~~~~~~~~~~~~
* ...
Logging
~~~~~~~
* ...
Management Commands
~~~~~~~~~~~~~~~~~~~
* ...
Migrations
~~~~~~~~~~
* ...
Models
~~~~~~
* ...
Requests and Responses
~~~~~~~~~~~~~~~~~~~~~~
* ...
Security
~~~~~~~~
* ...
Serialization
~~~~~~~~~~~~~
* ...
Signals
~~~~~~~
* ...
Templates
~~~~~~~~~
* ...
Tests
~~~~~
* ...
URLs
~~~~
* ...
Utilities
~~~~~~~~~
* ...
Validators
~~~~~~~~~~
* ...
.. _backwards-incompatible-4.0:
Backwards incompatible changes in 4.0
=====================================
Database backend API
--------------------
This section describes changes that may be needed in third-party database
backends.
* ...
Miscellaneous
-------------
* ...
.. _deprecated-features-4.0:
Features deprecated in 4.0
==========================
Miscellaneous
-------------
* ...
Features removed in 4.0
=======================
These features have reached the end of their deprecation cycle and are removed
in Django 4.0.
See :ref:`deprecated-features-3.0` for details on these changes, including how
to remove usage of these features.
* ``django.utils.http.urlquote()``, ``urlquote_plus()``, ``urlunquote()``, and
``urlunquote_plus()`` are removed.
* ``django.utils.encoding.force_text()`` and ``smart_text()`` are removed.
* ``django.utils.translation.ugettext()``, ``ugettext_lazy()``,
``ugettext_noop()``, ``ungettext()``, and ``ungettext_lazy()`` are removed.
* ``django.views.i18n.set_language()`` doesn't set the user language in
``request.session`` (key ``_language``).
* ``alias=None`` is required in the signature of
``django.db.models.Expression.get_group_by_cols()`` subclasses.
* ``django.utils.text.unescape_entities()`` is removed.
* ``django.utils.http.is_safe_url()`` is removed.
See :ref:`deprecated-features-3.1` for details on these changes, including how
to remove usage of these features.
* The ``PASSWORD_RESET_TIMEOUT_DAYS`` setting is removed.
* The :lookup:`isnull` lookup no longer allows using non-boolean values as the
right-hand side.
* The ``django.db.models.query_utils.InvalidQuery`` exception class is removed.
* The ``django-admin.py`` entry point is removed.
* The ``HttpRequest.is_ajax()`` method is removed.
* Support for the pre-Django 3.1 encoding format of cookies values used by
``django.contrib.messages.storage.cookie.CookieStorage`` is removed.
* Support for the pre-Django 3.1 password reset tokens in the admin site (that
use the SHA-1 hashing algorithm) is removed.
* Support for the pre-Django 3.1 encoding format of sessions is removed.
* Support for the pre-Django 3.1 ``django.core.signing.Signer`` signatures
(encoded with the SHA-1 algorithm) is removed.
* Support for the pre-Django 3.1 ``django.core.signing.dumps()`` signatures
(encoded with the SHA-1 algorithm) in ``django.core.signing.loads()`` is
removed.
* Support for the pre-Django 3.1 user sessions (that use the SHA-1 algorithm)
is removed.
|
