When extending from abstract model, ForeignKey points to wrong application

[skyjur]

This might be related to https://code.djangoproject.com/ticket/25858

I have following code:

app_A/models.py:

class AbstractModel1(Model):
    class Meta:
        abstract = True


class AbstractModel2(Model):
    model1 = ForeignKey('Model1')

    class Meta:
          abstract = True

app_A/models.py:

from .abstract import AbstractModel1, AbstractModel12

class Model1(AbstractModel1):
    pass

class Model2(AbstractModel12):
    pass

app_B/models.py:

from app_A.abstract import AbstractModel1, AbstractModel2

class Model1(AbstractModel1):
    pass

class Model2(AbstractModel12):
    pass

in Django 1.8, the app_B.Model2.model1 would point to app_B.Model1, but in Django 1.9.2 it points to app_A.Model1 so my code no longer works.

Test case can be found: ​https://github.com/skyjur/django-ticketing/tree/master/ticket_26186

[Simon Charette]

Hi skyjur,

While I can reproduce on Django 1.9 and 1.9.1 (where it was considered a regression #25858) I cannot reproduce on any version of Django 1.8.

I even tried swapping the order of 'app_A' and 'app_B' in INSTALLED_APPS with no success.

You can find the test applications I used in my attempts to reproduce ​here.

Are you sure you managed to reproduce against Django 1.8? If it's the case please reopen this ticket with more details.

[skyjur]

I have updated your test case:
​https://github.com/charettes/django-ticketing/pull/1

In my app my abstract models are defined in a/abstract.py and then imported into a/models.py, I didn't realise this was important.