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Fixed #8975 -- documented related order methods -- thanks to Leo for the report and dwillis for the initial patch.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@14848 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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@ -143,6 +143,32 @@ do this::
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class Meta:
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class Meta:
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order_with_respect_to = 'question'
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order_with_respect_to = 'question'
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When ``order_with_respect_to`` is set, two additional methods are provided to
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retrieve and to set the order of the related objects: ``get_RELATED_order()``
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and ``set_RELATED_order()``, where ``RELATED`` is the lowercased model name. For
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example, assuming that a ``Question`` object has multiple related ``Answer``
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objects, the list returned contains the primary keys of the related ``Answer``
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objects::
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>>> question = Question.objects.get(id=1)
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>>> question.get_answer_order()
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[1, 2, 3]
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The order of a ``Question`` object's related ``Answer`` objects can be set by
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passing in a list of ``Answer`` primary keys::
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>>> question.set_answer_order([3, 1, 2])
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The related objects also get two methods, ``get_next_in_order()`` and
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``get_previous_in_order()``, which can be used to access those objects in their
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proper order. Assuming the ``Answer`` objects are ordered by ``id``::
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>>> answer = Answer.objects.get(id=2)
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>>> answer.get_next_in_order()
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<Answer: 3>
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>>> answer.get_previous_in_order()
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<Answer: 1>
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``ordering``
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``ordering``
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------------
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------------
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