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Added Prefetch import to first use in QuerySet docs.

This commit is contained in:
Perry Roper 2016-12-15 01:54:29 +07:00 committed by Tim Graham
parent adb791fdcb
commit 3be2268992

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@ -1084,6 +1084,7 @@ the prefetch operation.
In its simplest form ``Prefetch`` is equivalent to the traditional string based
lookups:
>>> from django.db.models import Prefetch
>>> Restaurant.objects.prefetch_related(Prefetch('pizzas__toppings'))
You can provide a custom queryset with the optional ``queryset`` argument.
@ -3138,6 +3139,7 @@ The ``lookup`` argument describes the relations to follow and works the same
as the string based lookups passed to
:meth:`~django.db.models.query.QuerySet.prefetch_related()`. For example:
>>> from django.db.models import Prefetch
>>> Question.objects.prefetch_related(Prefetch('choice_set')).get().choice_set.all()
<QuerySet [<Choice: Not much>, <Choice: The sky>, <Choice: Just hacking again>]>
# This will only execute two queries regardless of the number of Question