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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/releases/1.7.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/docs/releases/1.7.txt b/docs/releases/1.7.txt index 573ad49dc2..74fc74947c 100644 --- a/docs/releases/1.7.txt +++ b/docs/releases/1.7.txt @@ -368,6 +368,20 @@ For apps with migrations, ``allow_migrate`` will now get passed without custom attributes, methods or managers. Make sure your ``allow_migrate`` methods are only referring to fields or other items in ``model._meta``. +Passing ``None`` to ``Manager.db_manager()`` +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +In previous versions of Django, it was possible to use +``db_manager(using=None)`` on a model manager instance to obtain a manager +instance using default routing behavior, overriding any manually specified +database routing. In Django 1.7, a value of ``None`` passed to db_manager will +produce a router that *retains* any manually assigned database routing -- the +manager will *not* be reset. This was necessary to resolve an inconsistency in +the way routing information cascaded over joins. See `Ticket #13724`_ for more +details. + +.. _Ticket #13724: https://code.djangoproject.com/ticket/13724 + pytz may be required ~~~~~~~~~~~~~~~~~~~~ |