django1/docs/releases/1.9.txt

============================================
Django 1.9 release notes - UNDER DEVELOPMENT
============================================

Welcome to Django 1.9!

These release notes cover the `new features`_, as well as some `backwards
incompatible changes`_ you'll want to be aware of when upgrading from Django
1.8 or older versions. We've :ref:`dropped some features
<deprecation-removed-in-1.9>` that have reached the end of their deprecation
cycle, and we've `begun the deprecation process for some features`_.

.. _`new features`: `What's new in Django 1.9`_
.. _`backwards incompatible changes`: `Backwards incompatible changes in 1.9`_
.. _`dropped some features`: `Features removed in 1.9`_
.. _`begun the deprecation process for some features`: `Features deprecated in 1.9`_

Python compatibility
====================

Like Django 1.8, Django 1.9 requires Python 2.7 or above, though we
**highly recommend** the latest minor release. We've dropped support for
Python 3.2 and added support for Python 3.5.

What's new in Django 1.9
========================

...

Minor features
~~~~~~~~~~~~~~

:mod:`django.contrib.admin`
^^^^^^^^^^^^^^^^^^^^^^^^^^^

* Admin views now have ``model_admin`` or ``admin_site`` attributes.

:mod:`django.contrib.auth`
^^^^^^^^^^^^^^^^^^^^^^^^^^

* The default iteration count for the PBKDF2 password hasher has been increased
  by 20%. This backwards compatible change will not affect users who have
  subclassed ``django.contrib.auth.hashers.PBKDF2PasswordHasher`` to change the
  default value.

:mod:`django.contrib.gis`
^^^^^^^^^^^^^^^^^^^^^^^^^^

* ...

:mod:`django.contrib.messages`
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

* ...

: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
^^^^^

* ...

Email
^^^^^

* ...

File Storage
^^^^^^^^^^^^

* ...

File Uploads
^^^^^^^^^^^^

* ...

Forms
^^^^^

* ...

Generic Views
^^^^^^^^^^^^^

* Class based views generated using ``as_view()`` now have ``view_class``
  and ``view_initkwargs`` attributes.

Internationalization
^^^^^^^^^^^^^^^^^^^^

* ...

Management Commands
^^^^^^^^^^^^^^^^^^^

* ...

Models
^^^^^^

* ...

Signals
^^^^^^^

* ...

Templates
^^^^^^^^^

* Template tags created with the :meth:`~django.template.Library.simple_tag`
  helper can now store results in a template variable by using the ``as``
  argument.

Requests and Responses
^^^^^^^^^^^^^^^^^^^^^^

* ...

Tests
^^^^^

* ...

Validators
^^^^^^^^^^

* ...

Backwards incompatible changes in 1.9
=====================================

.. warning::

    In addition to the changes outlined in this section, be sure to review the
    :doc:`deprecation timeline </internals/deprecation>` for any features that
    have been removed. If you haven't updated your code within the
    deprecation timeline for a given feature, its removal may appear as a
    backwards incompatible change.

Database backend API
~~~~~~~~~~~~~~~~~~~~

* A couple of new tests rely on the ability of the backend to introspect column
  defaults (returning the result as ``Field.default``). You can set the
  ``can_introspect_default`` database feature to ``False`` if your backend
  doesn't implement this. You may want to review the implementation on the
  backends that Django includes for reference (:ticket:`24245`).

Default settings that were tuples are now lists
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The default settings in ``django.conf.global_settings`` were a combination of
lists and tuples. All settings that were formerly tuples are now lists.

Miscellaneous
~~~~~~~~~~~~~

* CSS and images in ``contrib.admin`` to support Internet Explorer 6 & 7 have
  been removed as these browsers have reached end-of-life.

* ``django.http.responses.REASON_PHRASES`` and
  ``django.core.handlers.wsgi.STATUS_CODE_TEXT`` have been removed. Use
  Python's stdlib instead: :data:`http.client.responses` for Python 3 and
  `httplib.responses`_ for Python 2.

  .. _`httplib.responses`: https://docs.python.org/2/library/httplib.html#httplib.responses

* ``ValuesQuerySet`` and ``ValuesListQuerySet`` have been removed.

.. _deprecated-features-1.9:

Features deprecated in 1.9
==========================

``assignment_tag()``
~~~~~~~~~~~~~~~~~~~~

Django 1.4 added the ``assignment_tag`` helper to ease the creation of
template tags that store results in a template variable. The
:meth:`~django.template.Library.simple_tag` helper has gained this same
ability, making the ``assignment_tag`` obsolete. Tags that use
``assignment_tag`` should be updated to use ``simple_tag``.

Miscellaneous
~~~~~~~~~~~~~

* The ``weak`` argument to ``django.dispatch.signals.Signal.disconnect()`` has
  been deprecated as it has no effect.

* The ``check_aggregate_support()`` method of
  ``django.db.backends.base.BaseDatabaseOperations`` has been deprecated and
  will be removed in Django 2.1. The more general ``check_expression_support()``
  should be used instead.

* ``django.forms.extras`` is deprecated. You can find
  :class:`~django.forms.SelectDateWidget` in ``django.forms.widgets``
  (or simply ``django.forms``) instead.

.. removed-features-1.9:

Features removed in 1.9
=======================

These features have reached the end of their deprecation cycle and so have been
removed in Django 1.9 (please see the :ref:`deprecation timeline
<deprecation-removed-in-1.9>` for more details):

* ``django.utils.dictconfig`` is removed.

* ``django.utils.importlib`` is removed.

* ``django.utils.tzinfo`` is removed.

* ``django.utils.unittest`` is removed.

* The ``syncdb`` command is removed.

* ``django.db.models.signals.pre_syncdb`` and
  ``django.db.models.signals.post_syncdb`` is removed.

* Support for ``allow_syncdb`` on database routers is removed.

* The legacy method of syncing apps without migrations is removed,
  and migrations are compulsory for all apps. This includes automatic
  loading of ``initial_data`` fixtures and support for initial SQL data.

* All models need to be defined inside an installed application or declare an
  explicit :attr:`~django.db.models.Options.app_label`. Furthermore, it isn't
  possible to import them before their application is loaded. In particular, it
  isn't possible to import models inside the root package of an application.

* The model and form ``IPAddressField`` is removed. A stub field remains for
  compatibility with historical migrations.

* ``AppCommand.handle_app()`` is no longer be supported.

* ``RequestSite`` and ``get_current_site()`` are no longer importable from
  ``django.contrib.sites.models``.

* FastCGI support via the ``runfcgi`` management command is removed.

* ``django.utils.datastructures.SortedDict`` is removed.

* ``ModelAdmin.declared_fieldsets`` is removed.

* The ``util`` modules that provided backwards compatibility are removed:

  * ``django.contrib.admin.util``
  * ``django.contrib.gis.db.backends.util``
  * ``django.db.backends.util``
  * ``django.forms.util``

* ``ModelAdmin.get_formsets`` is removed.

* The backward compatible shims introduced to rename the
  ``BaseMemcachedCache._get_memcache_timeout()`` method to
  ``get_backend_timeout()`` is removed.

* The ``--natural`` and ``-n`` options for :djadmin:`dumpdata` are removed.

* The ``use_natural_keys`` argument for ``serializers.serialize()`` is removed.

* Private API ``django.forms.forms.get_declared_fields()`` is removed.

* The ability to use a ``SplitDateTimeWidget`` with ``DateTimeField`` is
  removed.

* The ``WSGIRequest.REQUEST`` property is removed.

* The class ``django.utils.datastructures.MergeDict`` is removed.

* The ``zh-cn`` and ``zh-tw`` language codes are removed.

* The internal ``django.utils.functional.memoize()`` is removed.

* ``django.core.cache.get_cache`` is removed.

* ``django.db.models.loading`` is removed.

* Passing callable arguments to querysets is no longer possible.

* ``BaseCommand.requires_model_validation`` is removed in favor of
  ``requires_system_checks``. Admin validators is replaced by admin checks.

* The ``ModelAdmin.validator_class`` and ``default_validator_class`` attributes
  are removed.

* ``ModelAdmin.validate()`` is removed.

* ``django.db.backends.DatabaseValidation.validate_field`` is removed in
  favor of the ``check_field`` method.

* The ``check`` management command is removed.

* ``django.utils.module_loading.import_by_path`` is removed in favor of
  ``django.utils.module_loading.import_string``.

* ``ssi`` and ``url`` template tags are removed from the ``future`` template
  tag library.

* ``django.utils.text.javascript_quote()`` is removed.

* Database test settings as independent entries in the database settings,
  prefixed by ``TEST_``, are no longer supported.

* The `cache_choices` option to :class:`~django.forms.ModelChoiceField` and
  :class:`~django.forms.ModelMultipleChoiceField` is removed.

* The default value of the
  :attr:`RedirectView.permanent <django.views.generic.base.RedirectView.permanent>`
  attribute has changed from ``True`` to ``False``.

* ``django.contrib.sitemaps.FlatPageSitemap`` is removed in favor of
  ``django.contrib.flatpages.sitemaps.FlatPageSitemap``.

* Private API ``django.test.utils.TestTemplateLoader`` is removed.

* The ``django.contrib.contenttypes.generic`` module is removed.