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b760503a27
This removes a dependency of 'core' on 'contrib'.
Backport of 83ba0a9 from master.
This deprecation occurs after the alpha, but it's a prerequisite
for fixing decently #18194 which is a release blocker.
312 lines
13 KiB
Plaintext
312 lines
13 KiB
Plaintext
===========================
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Django Deprecation Timeline
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===========================
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This document outlines when various pieces of Django will be removed or altered
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in a backward incompatible way, following their deprecation, as per the
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:ref:`deprecation policy <internal-release-deprecation-policy>`. More details
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about each item can often be found in the release notes of two versions prior.
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1.4
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---
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See the :doc:`Django 1.2 release notes</releases/1.2>` for more details on
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these changes.
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* ``CsrfResponseMiddleware`` and ``CsrfMiddleware`` will be removed. Use
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the {% csrf_token %} template tag inside forms to enable CSRF
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protection. ``CsrfViewMiddleware`` remains and is enabled by default.
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* The old imports for CSRF functionality (``django.contrib.csrf.*``),
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which moved to core in 1.2, will be removed.
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* The :mod:`django.contrib.gis.db.backend` module will be removed in favor
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of the specific backends.
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* ``SMTPConnection`` will be removed in favor of a generic Email backend API.
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* The many to many SQL generation functions on the database backends
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will be removed.
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* The ability to use the ``DATABASE_*`` family of top-level settings to
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define database connections will be removed.
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* The ability to use shorthand notation to specify a database backend
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(i.e., ``sqlite3`` instead of ``django.db.backends.sqlite3``) will be
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removed.
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* The ``get_db_prep_save``, ``get_db_prep_value`` and
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``get_db_prep_lookup`` methods will have to support multiple databases.
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* The ``Message`` model (in ``django.contrib.auth``), its related
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manager in the ``User`` model (``user.message_set``), and the
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associated methods (``user.message_set.create()`` and
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``user.get_and_delete_messages()``), will be removed. The
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:doc:`messages framework </ref/contrib/messages>` should be used
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instead. The related ``messages`` variable returned by the
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auth context processor will also be removed. Note that this
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means that the admin application will depend on the messages
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context processor.
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* Authentication backends will need to support the ``obj`` parameter for
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permission checking. The ``supports_object_permissions`` attribute
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will no longer be checked and can be removed from custom backends.
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* Authentication backends will need to support the ``AnonymousUser`` class
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being passed to all methods dealing with permissions. The
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``supports_anonymous_user`` variable will no longer be checked and can be
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removed from custom backends.
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* The ability to specify a callable template loader rather than a
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``Loader`` class will be removed, as will the ``load_template_source``
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functions that are included with the built in template loaders for
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backwards compatibility.
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* ``django.utils.translation.get_date_formats()`` and
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``django.utils.translation.get_partial_date_formats()``. These functions
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will be removed; use the locale-aware
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``django.utils.formats.get_format()`` to get the appropriate formats.
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* In ``django.forms.fields``, the constants: ``DEFAULT_DATE_INPUT_FORMATS``,
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``DEFAULT_TIME_INPUT_FORMATS`` and
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``DEFAULT_DATETIME_INPUT_FORMATS`` will be removed. Use
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``django.utils.formats.get_format()`` to get the appropriate
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formats.
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* The ability to use a function-based test runners will be removed,
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along with the ``django.test.simple.run_tests()`` test runner.
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* The ``views.feed()`` view and ``feeds.Feed`` class in
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``django.contrib.syndication`` will be removed. The class-based view
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``views.Feed`` should be used instead.
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* ``django.core.context_processors.auth``. This release will
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remove the old method in favor of the new method in
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``django.contrib.auth.context_processors.auth``.
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* The ``postgresql`` database backend will be removed, use the
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``postgresql_psycopg2`` backend instead.
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* The ``no`` language code will be removed and has been replaced by the
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``nb`` language code.
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* Authentication backends will need to define the boolean attribute
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``supports_inactive_user`` until version 1.5 when it will be assumed that
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all backends will handle inactive users.
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* ``django.db.models.fields.XMLField`` will be removed. This was
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deprecated as part of the 1.3 release. An accelerated deprecation
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schedule has been used because the field hasn't performed any role
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beyond that of a simple ``TextField`` since the removal of oldforms.
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All uses of ``XMLField`` can be replaced with ``TextField``.
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* The undocumented ``mixin`` parameter to the ``open()`` method of
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``django.core.files.storage.Storage`` (and subclasses) will be removed.
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1.5
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---
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See the :doc:`Django 1.3 release notes</releases/1.3>` for more details on
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these changes.
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* Starting Django without a :setting:`SECRET_KEY` will result in an exception
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rather than a `DeprecationWarning`. (This is accelerated from the usual
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deprecation path; see the :doc:`Django 1.4 release notes</releases/1.4>`.)
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* The ``mod_python`` request handler will be removed. The ``mod_wsgi``
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handler should be used instead.
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* The ``template`` attribute on :class:`~django.test.client.Response`
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objects returned by the :ref:`test client <test-client>` will be removed.
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The :attr:`~django.test.client.Response.templates` attribute should be
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used instead.
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* The :class:`~django.test.simple.DjangoTestRunner` will be removed.
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Instead use a unittest-native class. The features of the
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:class:`django.test.simple.DjangoTestRunner` (including fail-fast and
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Ctrl-C test termination) can currently be provided by the unittest-native
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:class:`TextTestRunner`.
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* The undocumented function
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:func:`django.contrib.formtools.utils.security_hash` will be removed,
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instead use :func:`django.contrib.formtools.utils.form_hmac`
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* The function-based generic view modules will be removed in favor of their
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class-based equivalents, outlined :doc:`here
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</topics/class-based-views/index>`.
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* The :class:`~django.core.servers.basehttp.AdminMediaHandler` will be
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removed. In its place use
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:class:`~django.contrib.staticfiles.handlers.StaticFilesHandler`.
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* The :ttag:`url` and :ttag:`ssi` template tags will be
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modified so that the first argument to each tag is a template variable, not
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an implied string. In 1.4, this behavior is provided by a version of the tag
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in the ``future`` template tag library.
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* The :djadmin:`reset` and :djadmin:`sqlreset` management commands
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will be removed.
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* Authentication backends will need to support an inactive user
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being passed to all methods dealing with permissions.
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The ``supports_inactive_user`` attribute will no longer be checked
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and can be removed from custom backends.
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* :meth:`~django.contrib.gis.geos.GEOSGeometry.transform` will raise
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a :class:`~django.contrib.gis.geos.GEOSException` when called
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on a geometry with no SRID value.
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* :class:`~django.http.CompatCookie` will be removed in favor of
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:class:`~django.http.SimpleCookie`.
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* :class:`django.core.context_processors.PermWrapper` and
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:class:`django.core.context_processors.PermLookupDict` will be removed in
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favor of the corresponding
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:class:`django.contrib.auth.context_processors.PermWrapper` and
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:class:`django.contrib.auth.context_processors.PermLookupDict`,
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respectively.
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* The :setting:`MEDIA_URL` or :setting:`STATIC_URL` settings will be
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required to end with a trailing slash to ensure there is a consistent
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way to combine paths in templates.
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* ``django.db.models.fields.URLField.verify_exists`` will be removed. The
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feature was deprecated in 1.3.1 due to intractable security and
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performance issues and will follow a slightly accelerated deprecation
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timeframe.
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* Translations located under the so-called *project path* will be ignored during
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the translation building process performed at runtime. The
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:setting:`LOCALE_PATHS` setting can be used for the same task by including the
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filesystem path to a ``locale`` directory containing non-app-specific
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translations in its value.
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* The Markup contrib app will no longer support versions of Python-Markdown
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library earlier than 2.1. An accelerated timeline was used as this was
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a security related deprecation.
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* The ``CACHE_BACKEND`` setting will be removed. The cache backend(s) should be
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specified in the :setting:`CACHES` setting.
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1.6
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---
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See the :doc:`Django 1.4 release notes</releases/1.4>` for more details on
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these changes.
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* The compatibility modules ``django.utils.copycompat`` and
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``django.utils.hashcompat`` as well as the functions
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``django.utils.itercompat.all`` and ``django.utils.itercompat.any`` will
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be removed. The Python builtin versions should be used instead.
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* The :func:`~django.views.decorators.csrf.csrf_response_exempt` and
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:func:`~django.views.decorators.csrf.csrf_view_exempt` decorators will
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be removed. Since 1.4 ``csrf_response_exempt`` has been a no-op (it
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returns the same function), and ``csrf_view_exempt`` has been a
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synonym for ``django.views.decorators.csrf.csrf_exempt``, which should
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be used to replace it.
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* The :class:`~django.core.cache.backends.memcached.CacheClass` backend
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was split into two in Django 1.3 in order to introduce support for
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PyLibMC. The historical :class:`~django.core.cache.backends.memcached.CacheClass`
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will be removed in favor of :class:`~django.core.cache.backends.memcached.MemcachedCache`.
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* The UK-prefixed objects of ``django.contrib.localflavor.uk`` will only
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be accessible through their GB-prefixed names (GB is the correct
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ISO 3166 code for United Kingdom).
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* The :setting:`IGNORABLE_404_STARTS` and :setting:`IGNORABLE_404_ENDS`
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settings have been superseded by :setting:`IGNORABLE_404_URLS` in
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the 1.4 release. They will be removed.
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* The :doc:`form wizard </ref/contrib/formtools/form-wizard>` has been
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refactored to use class-based views with pluggable backends in 1.4.
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The previous implementation will be removed.
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* Legacy ways of calling
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:func:`~django.views.decorators.cache.cache_page` will be removed.
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* The backward-compatibility shim to automatically add a debug-false
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filter to the ``'mail_admins'`` logging handler will be removed. The
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:setting:`LOGGING` setting should include this filter explicitly if
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it is desired.
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* The template tag
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:func:`django.contrib.admin.templatetags.adminmedia.admin_media_prefix`
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will be removed in favor of the generic static files handling.
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* The builtin truncation functions :func:`django.utils.text.truncate_words`
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and :func:`django.utils.text.truncate_html_words` will be removed in
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favor of the ``django.utils.text.Truncator`` class.
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* The :class:`~django.contrib.gis.geoip.GeoIP` class was moved to
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:mod:`django.contrib.gis.geoip` in 1.4 -- the shortcut in
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:mod:`django.contrib.gis.utils` will be removed.
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* ``django.conf.urls.defaults`` will be removed. The functions
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:func:`~django.conf.urls.include`, :func:`~django.conf.urls.patterns` and
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:func:`~django.conf.urls.url` plus :data:`~django.conf.urls.handler404`,
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:data:`~django.conf.urls.handler500`, are now available through
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:mod:`django.conf.urls` .
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* The Databrowse contrib module will be removed.
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* The functions :func:`~django.core.management.setup_environ` and
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:func:`~django.core.management.execute_manager` will be removed from
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:mod:`django.core.management`. This also means that the old (pre-1.4)
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style of :file:`manage.py` file will no longer work.
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* Setting the ``is_safe`` and ``needs_autoescape`` flags as attributes of
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template filter functions will no longer be supported.
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* The attribute ``HttpRequest.raw_post_data`` was renamed to ``HttpRequest.body``
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in 1.4. The backward compatibility will be removed --
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``HttpRequest.raw_post_data`` will no longer work.
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* ``django.contrib.markup`` will be removed following an accelerated
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deprecation.
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1.7
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---
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See the :doc:`Django 1.5 release notes</releases/1.5>` for more details on
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these changes.
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* The module ``django.utils.simplejson`` will be removed. The standard library
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provides :mod:`json` which should be used instead.
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* The function ``django.utils.itercompat.product`` will be removed. The Python
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builtin version should be used instead.
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* Auto-correction of INSTALLED_APPS and TEMPLATE_DIRS settings when they are
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specified as a plain string instead of a tuple will be removed and raise an
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exception.
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* The ``mimetype`` argument to :class:`~django.http.HttpResponse` ``__init__``
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will be removed (``content_type`` should be used instead).
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* When :class:`~django.http.HttpResponse` is instantiated with an iterator,
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or when :attr:`~django.http.HttpResponse.content` is set to an iterator,
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that iterator will be immediately consumed.
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* The ``AUTH_PROFILE_MODULE`` setting, and the ``get_profile()`` method on
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the User model, will be removed.
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* The ``cleanup`` management command will be removed. It's replaced by
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``clearsessions``.
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* The ``daily_cleanup.py`` script will be removed.
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2.0
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---
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* ``django.views.defaults.shortcut()``. This function has been moved
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to ``django.contrib.contenttypes.views.shortcut()`` as part of the
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goal of removing all ``django.contrib`` references from the core
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Django codebase. The old shortcut will be removed in the 2.0
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release.
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* ``ssi`` and ``url`` template tags will be removed from the ``future`` template
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tag library (used during the 1.3/1.4 deprecation period).
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