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[1.9.x] Refs #14030 -- Updated docs per "Improved expression support for python values."

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Complements e2d6e14662d780383e18066a3182155fb5b7747b.

Backport of db613f4f1250971942f766dcf97c22234a3aa14e from master
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Sergey Fedoseev 2016-06-15 18:09:59 +05:00 committed by Tim Graham
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docs/ref/models/conditional-expressions.txt
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@ -72,7 +72,6 @@ Keep in mind that each of these values can be an expression.
:class:`~django.db.models.Model` has a field named ``then``. This can be
resolved in two ways::
>>> from django.db.models import Value
>>> When(then__exact=0, then=1)
>>> When(Q(then=0), then=1)
@ -118,8 +117,8 @@ A simple example::
``Case()`` accepts any number of ``When()`` objects as individual arguments.
Other options are provided using keyword arguments. If none of the conditions
evaluate to ``TRUE``, then the expression given with the ``default`` keyword
argument is returned. If no ``default`` argument is provided, ``Value(None)``
is used.
argument is returned. If a ``default`` argument isn't provided, ``None`` is
used.
If we wanted to change our previous query to get the discount based on how long
the ``Client`` has been with us, we could do so using lookups::