= Backwards-incompatible changes =

As Django is still in pre-release mode, we haven't yet committed to maintaining backwards compatibility in any APIs. Although we're keeping such changes to a minimum, Django developers should be acutely aware of these changes.

Of course, once we reach our first official release, we'll be strongly committed to backward compatibility.

This page lists all backwards-incompatible changes to Django so far, and the proposed backwards-incompatible changes.

== Changes already made ==

=== Moved mod_python handler ===

As of [169], using {{{django.core.handler}}} as a mod_python handler is deprecated. Use {{{django.core.handlers.modpython}}} instead. We will be removing {{{django.core.handler}}} for Django's first release.

=== Changed ordering syntax ===

As of [292], syntax used for {{{order_by}}} (in the database API) and {{{ordering}}} (in models) has changed.

Example of old ordering syntax:
{{{order_by=[('foo', 'ASC'), ('bar', 'DESC')]}}}

Example of new ordering syntax:
{{{order_by=['foo', '-bar']}}}

The old syntax is deprecated, and we'll stop supporting it for Django's first release.

=== Refactored meta.py ===

As of [378], {{{django/core/meta.py}}} has been converted to a package, {{{django/core/meta/}}}. If you're using a version of Django from before [378], make sure to delete {{{django/core/meta.pyc}}} and {{{django/core/meta.pyo}}}, if they exist. The existence of those files doesn't pose any known problems, but it's best to clean things up.

=== Changed edit_inline and edit_inline_type behavior ===

As of [440], using {{{edit_inline_type}}} in your models is deprecated, in favor of a less-redundant approach that uses {{{edit_inline}}} itself.

Example of old syntax:
{{{edit_inline=True, edit_inline_type=meta.TABULAR}}}

Example of new syntax:
{{{edit_inline=meta.TABULAR}}}

We'll stop supporting the old syntax for Django's first release.

== Upcoming changes ==

=== Model syntax ===

This is the big one. Model syntax will be changed dramatically before Django's first release. See #122 for full information and discussion.