mirror of
https://github.com/django/django.git
synced 2024-11-25 07:59:34 +01:00
245 lines
10 KiB
Plaintext
245 lines
10 KiB
Plaintext
========================
|
|
Django 1.0 release notes
|
|
========================
|
|
|
|
Welcome to Django 1.0!
|
|
|
|
We've been looking forward to this moment for over three years, and it's finally
|
|
here. Django 1.0 represents the largest milestone in Django's development to
|
|
date: a web framework that a group of perfectionists can truly be proud of.
|
|
|
|
Django 1.0 represents over three years of community development as an Open
|
|
Source project. Django's received contributions from hundreds of developers,
|
|
been translated into fifty languages, and today is used by developers on every
|
|
continent and in every kind of job.
|
|
|
|
An interesting historical note: when Django was first released in July 2005, the
|
|
initial released version of Django came from an internal repository at revision
|
|
number 8825. Django 1.0 represents revision 8961 of our public repository. It
|
|
seems fitting that our 1.0 release comes at the moment where community
|
|
contributions overtake those made privately.
|
|
|
|
Stability and forwards-compatibility
|
|
====================================
|
|
|
|
The release of Django 1.0 comes with a promise of API
|
|
stability and forwards-compatibility. In a nutshell, this means that code you
|
|
develop against Django 1.0 will continue to work against 1.1 unchanged, and you
|
|
should need to make only minor changes for any 1.X release.
|
|
|
|
See the :doc:`API stability guide </misc/api-stability>` for full details.
|
|
|
|
Backwards-incompatible changes
|
|
==============================
|
|
|
|
Django 1.0 has a number of backwards-incompatible changes from Django 0.96. If
|
|
you have apps written against Django 0.96 that you need to port, see our
|
|
detailed porting guide:
|
|
|
|
.. toctree::
|
|
:maxdepth: 1
|
|
|
|
1.0-porting-guide
|
|
|
|
A complete list of backwards-incompatible changes can be found at
|
|
https://code.djangoproject.com/wiki/BackwardsIncompatibleChanges.
|
|
|
|
What's new in Django 1.0
|
|
========================
|
|
|
|
A *lot*!
|
|
|
|
Since Django 0.96, we've made over 4,000 code commits, fixed more than 2,000
|
|
bugs, and edited, added, or removed around 350,000 lines of code. We've also
|
|
added 40,000 lines of new documentation, and greatly improved what was already
|
|
there.
|
|
|
|
In fact, new documentation is one of our favorite features of Django 1.0, so we
|
|
might as well start there. First, there's a new documentation site:
|
|
|
|
* https://docs.djangoproject.com/
|
|
|
|
The documentation has been greatly improved, cleaned up, and generally made
|
|
awesome. There's now dedicated search, indexes, and more.
|
|
|
|
We can't possibly document everything that's new in 1.0, but the documentation
|
|
will be your definitive guide. Anywhere you see something like:
|
|
|
|
.. versionadded:: 1.0
|
|
|
|
This feature is new in Django 1.0
|
|
|
|
You'll know that you're looking at something new or changed.
|
|
|
|
The other major highlights of Django 1.0 are:
|
|
|
|
Refactored admin application
|
|
----------------------------
|
|
|
|
The Django administrative interface (``django.contrib.admin``) has been
|
|
completely refactored; admin definitions are now completely decoupled from model
|
|
definitions (no more ``class Admin`` declaration in models!), rewritten to use
|
|
Django's new form-handling library (introduced in the 0.96 release as
|
|
``django.newforms``, and now available as simply ``django.forms``) and
|
|
redesigned with extensibility and customization in mind. Full documentation for
|
|
the admin application is available online in the official Django documentation:
|
|
|
|
See the :doc:`admin reference </ref/contrib/admin/index>` for details
|
|
|
|
Improved Unicode handling
|
|
-------------------------
|
|
|
|
Django's internals have been refactored to use Unicode throughout; this
|
|
drastically simplifies the task of dealing with non-Western-European content and
|
|
data in Django. Additionally, utility functions have been provided to ease
|
|
interoperability with third-party libraries and systems which may or may not
|
|
handle Unicode gracefully. Details are available in Django's Unicode-handling
|
|
documentation.
|
|
|
|
See :doc:`/ref/unicode`.
|
|
|
|
An improved ORM
|
|
---------------
|
|
|
|
Django's object-relational mapper -- the component which provides the mapping
|
|
between Django model classes and your database, and which mediates your database
|
|
queries -- has been dramatically improved by a massive refactoring. For most
|
|
users of Django this is backwards-compatible; the public-facing API for database
|
|
querying underwent a few minor changes, but most of the updates took place in
|
|
the ORM's internals. A guide to the changes, including backwards-incompatible
|
|
modifications and mentions of new features opened up by this refactoring, is
|
|
`available on the Django wiki`__.
|
|
|
|
__ https://code.djangoproject.com/wiki/QuerysetRefactorBranch
|
|
|
|
Automatic escaping of template variables
|
|
----------------------------------------
|
|
|
|
To provide improved security against cross-site scripting (XSS) vulnerabilities,
|
|
Django's template system now automatically escapes the output of variables. This
|
|
behavior is configurable, and allows both variables and larger template
|
|
constructs to be marked as safe (requiring no escaping) or unsafe (requiring
|
|
escaping). A full guide to this feature is in the documentation for the
|
|
:ttag:`autoescape` tag.
|
|
|
|
``django.contrib.gis`` (GeoDjango)
|
|
----------------------------------
|
|
|
|
A project over a year in the making, this adds world-class GIS (`Geographic
|
|
Information Systems`_) support to Django, in the form of a ``contrib``
|
|
application. Its documentation is currently being maintained externally, and
|
|
will be merged into the main Django documentation shortly. Huge thanks go to
|
|
Justin Bronn, Jeremy Dunck, Brett Hoerner and Travis Pinney for their efforts in
|
|
creating and completing this feature.
|
|
|
|
See :doc:`GeoDjango </ref/contrib/gis/index>` for details.
|
|
|
|
.. _Geographic Information Systems: https://en.wikipedia.org/wiki/Geographic_information_system
|
|
|
|
Pluggable file storage
|
|
----------------------
|
|
|
|
Django's built-in ``FileField`` and ``ImageField`` now can take advantage of
|
|
pluggable file-storage backends, allowing extensive customization of where and
|
|
how uploaded files get stored by Django. For details, see :doc:`the files
|
|
documentation </topics/files>`; big thanks go to Marty Alchin for putting in the
|
|
hard work to get this completed.
|
|
|
|
Jython compatibility
|
|
--------------------
|
|
|
|
Thanks to a lot of work from Leo Soto during a Google Summer of Code project,
|
|
Django's codebase has been refactored to remove incompatibilities with
|
|
`Jython`_, an implementation of Python written in Java, which runs Python code
|
|
on the Java Virtual Machine. Django is now compatible with the forthcoming
|
|
Jython 2.5 release.
|
|
|
|
.. _Jython: https://www.jython.org/
|
|
|
|
Generic relations in forms and admin
|
|
------------------------------------
|
|
|
|
Classes are now included in ``django.contrib.contenttypes`` which can be used to
|
|
support generic relations in both the admin interface and in end-user forms. See
|
|
:ref:`the documentation for generic relations <generic-relations>` for details.
|
|
|
|
``INSERT``/``UPDATE`` distinction
|
|
---------------------------------
|
|
|
|
Although Django's default behavior of having a model's ``save()`` method
|
|
automatically determine whether to perform an ``INSERT`` or an ``UPDATE`` at the
|
|
SQL level is suitable for the majority of cases, there are occasional situations
|
|
where forcing one or the other is useful. As a result, models can now support an
|
|
additional parameter to ``save()`` which can force a specific operation.
|
|
|
|
See :ref:`ref-models-force-insert` for details.
|
|
|
|
Split ``CacheMiddleware``
|
|
-------------------------
|
|
|
|
Django's ``CacheMiddleware`` has been split into three classes:
|
|
``CacheMiddleware`` itself still exists and retains all of its previous
|
|
functionality, but it is now built from two separate middleware classes which
|
|
handle the two parts of caching (inserting into and reading from the cache)
|
|
separately, offering additional flexibility for situations where combining these
|
|
functions into a single middleware posed problems.
|
|
|
|
Full details, including updated notes on appropriate use, are in :doc:`the
|
|
caching documentation </topics/cache>`.
|
|
|
|
Refactored ``django.contrib.comments``
|
|
--------------------------------------
|
|
|
|
As part of a Google Summer of Code project, Thejaswi Puthraya carried out a
|
|
major rewrite and refactoring of Django's bundled comment system, greatly
|
|
increasing its flexibility and customizability.
|
|
|
|
Removal of deprecated features
|
|
------------------------------
|
|
|
|
A number of features and methods which had previously been marked as deprecated,
|
|
and which were scheduled for removal prior to the 1.0 release, are no longer
|
|
present in Django. These include imports of the form library from
|
|
``django.newforms`` (now located simply at ``django.forms``), the
|
|
``form_for_model`` and ``form_for_instance`` helper functions (which have been
|
|
replaced by ``ModelForm``) and a number of deprecated features which were
|
|
replaced by the dispatcher, file-uploading and file-storage refactoring
|
|
introduced in the Django 1.0 alpha releases.
|
|
|
|
Known issues
|
|
============
|
|
|
|
We've done our best to make Django 1.0 as solid as possible, but unfortunately
|
|
there are a couple of issues that we know about in the release.
|
|
|
|
Multi-table model inheritance with ``to_field``
|
|
-----------------------------------------------
|
|
|
|
If you're using :ref:`multiple table model inheritance
|
|
<multi-table-inheritance>`, be aware of this caveat: child models using a custom
|
|
``parent_link`` and ``to_field`` will cause database integrity errors. A set of
|
|
models like the following are **not valid**::
|
|
|
|
class Parent(models.Model):
|
|
name = models.CharField(max_length=10)
|
|
other_value = models.IntegerField(unique=True)
|
|
|
|
|
|
class Child(Parent):
|
|
father = models.OneToOneField(
|
|
Parent, primary_key=True, to_field="other_value", parent_link=True
|
|
)
|
|
value = models.IntegerField()
|
|
|
|
This bug will be fixed in the next release of Django.
|
|
|
|
Caveats with support of certain databases
|
|
-----------------------------------------
|
|
|
|
Django attempts to support as many features as possible on all database
|
|
backends. However, not all database backends are alike, and in particular many of the supported database differ greatly from version to version. It's a good idea to checkout our :doc:`notes on supported database </ref/databases>`:
|
|
|
|
- :ref:`mysql-notes`
|
|
- :ref:`sqlite-notes`
|
|
- :ref:`oracle-notes`
|