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[1.2.X] Fixed #8975 -- documented related order methods -- thanks to …

…Leo for the report and dwillis for the initial patch.

Backport of r14848 from trunk.

git-svn-id: bcc190cf-cafb-0310-a4f2-bffc1f526a37
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commit 7c23fbd9a0cb0f41abcf4a75a4708dc140f99ace 1 parent a47c2ef
@DrMeers DrMeers authored
Showing with 26 additions and 0 deletions.
  1. +26 −0 docs/ref/models/options.txt
26 docs/ref/models/options.txt
@@ -143,6 +143,32 @@ do this::
class Meta:
order_with_respect_to = 'question'
+When ``order_with_respect_to`` is set, two additional methods are provided to
+retrieve and to set the order of the related objects: ``get_RELATED_order()``
+and ``set_RELATED_order()``, where ``RELATED`` is the lowercased model name. For
+example, assuming that a ``Question`` object has multiple related ``Answer``
+objects, the list returned contains the primary keys of the related ``Answer``
+ >>> question = Question.objects.get(id=1)
+ >>> question.get_answer_order()
+ [1, 2, 3]
+The order of a ``Question`` object's related ``Answer`` objects can be set by
+passing in a list of ``Answer`` primary keys::
+ >>> question.set_answer_order([3, 1, 2])
+The related objects also get two methods, ``get_next_in_order()`` and
+``get_previous_in_order()``, which can be used to access those objects in their
+proper order. Assuming the ``Answer`` objects are ordered by ``id``::
+ >>> answer = Answer.objects.get(id=2)
+ >>> answer.get_next_in_order()
+ <Answer: 3>
+ >>> answer.get_previous_in_order()
+ <Answer: 1>

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