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Code Issues 32 Releases Wiki Activity

Fixed #7539, #13067 -- Added on_delete argument to ForeignKey to control cascade behavior. Also refactored deletion for efficiency and code clarity. Many thanks to Johannes Dollinger and Michael Glassford for extensive work on the patch, and to Alex Gaynor, Russell Keith-Magee, and Jacob Kaplan-Moss for review.

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git-svn-id: http://code.djangoproject.com/svn/django/trunk@14507 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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Carl Meyer
2010-11-09 16:46:42 +00:00
parent 3ba3294c6b
commit 616b30227d
28 changed files with 850 additions and 608 deletions
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docs/releases/1.3.txt
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@@ -86,6 +86,19 @@ Users of Python 2.5 and above may now use :ref:`transaction management functions
For more information, see :ref:`transaction-management-functions`.
Configurable delete-cascade
~~~~~~~~~~~~~~~~~~~~~~~~~~~
:class:`~django.db.models.ForeignKey` and
:class:`~django.db.models.OneToOneField` now accept an
:attr:`~django.db.models.ForeignKey.on_delete` argument to customize behavior
when the referenced object is deleted. Previously, deletes were always
cascaded; available alternatives now include set null, set default, set to any
value, protect, or do nothing.
For more information, see the :attr:`~django.db.models.ForeignKey.on_delete`
documentation.
Contextual markers in translatable strings
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~