#11263: Bug in lookup with generic relation in model inheritance
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Reporter: veena | Owner: tobias
Status: assigned | Milestone: 1.2
Component: Database layer (models, ORM) | Version: SVN
Resolution: | Keywords: generic
relations, model inheritance
Stage: Accepted | Has_patch: 0
Needs_docs: 1 | Needs_tests: 1
Needs_better_patch: 0 |
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Comment (by tobias):
WITH inheritance it still breaks in trunk:
{{{
rom django.db import models
from django.contrib.contenttypes.models import ContentType
from django.contrib.contenttypes import generic
from django.contrib.auth.models import User
class Order(models.Model):
content_type = models.ForeignKey(ContentType)
object_id = models.PositiveIntegerField()
content_object = generic.GenericForeignKey()
status = models.CharField(max_length=10, default='ordered')
class Visitor(User): # HAS a parent model
order = generic.GenericRelation(Order)
Visitor.objects.filter(order__status='ordered').count()
# generates:
ProgrammingError: column testapp_order.user_ptr_id does not exist
}}}
{{{
SELECT COUNT(*)
FROM "testapp_visitor"
INNER JOIN "testapp_order" ON ("testapp_visitor"."user_ptr_id" =
"testapp_order"."object_id")
INNER JOIN "testapp_order" T3 ON ("testapp_order"."user_ptr_id" = T3."id")
WHERE (T3."status" = E\'ordered\' AND T3."content_type_id" = 9 )
}}}
--
Ticket URL: <http://code.djangoproject.com/ticket/11263#comment:6>
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