#14622: ValuesListQuerySet used with a foo__in filter breaks in SQL generation
------------------------------------------+---------------------------------
Reporter: calvinspealman | Owner: nobody
Status: new | Milestone:
Component: Database layer (models, ORM) | Version: 1.2
Keywords: | Stage: Unreviewed
Has_patch: 0 |
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A similar bug was reported in #10181 but I do not believe it was entirely
fixed. The testcase added by changeset [9951] only tests
{{{
>>> Tag.objects.filter(id__in=Tag.objects.filter(id__in=[]))
}}}
However, this is using an explicit empty list and not an empty
ValuesListQuerySet. Something like
{{{
>>>
Tag.objects.filter(id__in=Tag.objects.filter(id__in=Tag.objects.none().values_list('id',
flat=True)))
}}}
will fail in SQL generation, because an empty ValuesListQuerySet() seems
to be missing several key attributes. This seems to be because
ValuesQuerySet._clone() method is called with setup=False and it never
establishes the attributes expected.
--
Ticket URL: <http://code.djangoproject.com/ticket/14622>
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