#27460: GenericRelation doesn't work from AbstractClass to AbstractClass in
Django
1.10(.3)
-------------------------------------+-------------------------------------
Reporter: coldib | Owner: nobody
Type: Bug | Status: new
Component: | Version: 1.10
Uncategorized | Keywords: GenericRelation,
Severity: Normal | Abstract, ContentFramework
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
-------------------------------------+-------------------------------------
Creating the following models does work in Django 1.9, however in Django
1.10 the following error is raised **as soon as the class that inherits is
created** (in the example as soon as class DetailTest is created):
{{{
<function make_generic_foreign_order_accessors at 0x7f5444873488>:
(models.E022) <function make_generic_foreign_order_accessors at
0x7f5444873488> contains a lazy reference to testac.abstractmaster, but
app 'testac' doesn't provide model 'abstractmaster'.
testac.DetailTest.relatedMasterModel: (fields.E307) The field
testac.DetailTest.relatedMasterModel was declared with a lazy reference to
'testac.abstractmaster', but app 'testac' doesn't provide model
'abstractmaster'.
}}}
**models.py**
{{{
from __future__ import unicode_literals
from django.db import models
from django.contrib.contenttypes.fields import GenericForeignKey,
GenericRelation
from django.contrib.contenttypes.models import ContentType
class AbstractMaster (models.Model):
class Meta: abstract=True
detailModel_type = models.ForeignKey(ContentType, blank=True,
null=True)
detailModel_id = models.PositiveIntegerField(blank=True, null=True)
detail_Model = GenericForeignKey('detailModel_type', 'detailModel_id')
class AbstractDetail (models.Model):
class Meta: abstract=True
masterModel_type = models.ForeignKey(ContentType, blank=True,
null=True)
masterModel_id = models.PositiveIntegerField(blank=True, null=True)
master_Model = GenericForeignKey('masterModel_type', 'masterModel_id')
relatedMasterModel = GenericRelation(AbstractMaster,
object_id_field='detailModel_id', content_type_field='detailModel_id',
related_query_name='%(app_label)s_%(class)s_detail_model')
class MasterTest (AbstractMaster):
pass
class DetailTest (AbstractDetail):
pass
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/27460>
Django <https://code.djangoproject.com/>
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