django/docs/releases/2.0.txt

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============================================
Django 2.0 release notes - UNDER DEVELOPMENT
============================================
Welcome to Django 2.0!
These release notes cover the :ref:`new features <whats-new-2.0>`, as well as
some :ref:`backwards incompatible changes <backwards-incompatible-2.0>` you'll
want to be aware of when upgrading from Django 1.11 or earlier. We've
:ref:`dropped some features<removed-features-2.0>` that have reached the end of
their deprecation cycle, and we've :ref:`begun the deprecation process for some
features <deprecated-features-2.0>`.
See the :doc:`/howto/upgrade-version` guide if you're updating an existing
project.
Python compatibility
====================
Django 2.0 supports Python 3.5+. Since Django 1.11, support for Python 2.7 and
3.4 is removed. We **highly recommend** and only officially support the latest
release of each series.
Third-party library support for older version of Django
=======================================================
Following the release of Django 2.0, we suggest that third-party app authors
drop support for all versions of Django prior to 1.11. At that time, you should
be able run your package's tests using ``python -Wd`` so that deprecation
warnings do appear. After making the deprecation warning fixes, your app should
be compatible with Django 2.0.
.. _whats-new-2.0:
What's new in Django 2.0
========================
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
~~~~
* ...
Database backends
~~~~~~~~~~~~~~~~~
* ...
Email
~~~~~
* ...
File Storage
~~~~~~~~~~~~
* ...
File Uploads
~~~~~~~~~~~~
* ...
Forms
~~~~~
* ...
Generic Views
~~~~~~~~~~~~~
* ...
Internationalization
~~~~~~~~~~~~~~~~~~~~
* ...
Management Commands
~~~~~~~~~~~~~~~~~~~
* ...
Migrations
~~~~~~~~~~
* ...
Models
~~~~~~
* ...
Requests and Responses
~~~~~~~~~~~~~~~~~~~~~~
* ...
Serialization
~~~~~~~~~~~~~
* ...
Signals
~~~~~~~
* ...
Templates
~~~~~~~~~
* ...
Tests
~~~~~
* ...
URLs
~~~~
* ...
Validators
~~~~~~~~~~
* ...
.. _backwards-incompatible-2.0:
Backwards incompatible changes in 2.0
=====================================
Database backend API
--------------------
* ...
Miscellaneous
-------------
* ...
.. _deprecated-features-2.0:
Features deprecated in 2.0
==========================
Miscellaneous
-------------
* ...
.. _removed-features-2.0:
Features removed in 2.0
=======================
These features have reached the end of their deprecation cycle and are removed
in Django 2.0. See :ref:`deprecated-features-1.9` and
:ref:`deprecated-features-1.10` for details, including how to remove usage of
these features.
* The ``weak`` argument to ``django.dispatch.signals.Signal.disconnect()`` is
removed.
* ``django.db.backends.base.BaseDatabaseOperations.check_aggregate_support()``
is removed.
* The ``django.forms.extras`` package is removed.
* The ``assignment_tag`` helper is removed.
* The ``host`` argument to ``SimpleTestCase.assertsRedirects()`` is removed.
The compatibility layer which allows absolute URLs to be considered equal to
relative ones when the path is identical is also removed.
* ``Field.rel`` and ``Field.remote_field.to`` are removed.
* The ``on_delete`` argument for ``ForeignKey`` and ``OneToOneField`` are now
required.
* ``django.db.models.fields.add_lazy_relation()`` is removed.