id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
28110	Model inheritance field name collision check error refers to related accessors as fields	Matthew Schinckel	Clifford Gama	"I have a model structure that generates a `models.E006` error under Django 1.9 onwards:



{{{
from django.db import models


class OrgUnit(models.Model):
    name = models.CharField(max_length=128)


class Organisation(OrgUnit):
    config = models.TextField(default='{}')


class Region(OrgUnit):
    organisation = models.ForeignKey(Organisation, related_name='regions')


class SubRegion(OrgUnit):
    region = models.ForeignKey(Region, related_name='sub_regions')
}}}

When running `./manage.py check`, this results in:


{{{
SystemCheckError: System check identified some issues:

ERRORS:
org.Region.organisation: (models.E006) The field 'organisation' clashes with the field 'organisation' from model 'org.orgunit'.
org.SubRegion.region: (models.E006) The field 'region' clashes with the field 'region' from model 'org.orgunit'.

System check identified 2 issues (0 silenced).
}}}

However, I believe these are incorrect: the model OrgUnit does not have the fields listed.

This model structure worked fine in 1.8, but started failing in 1.9 (and still fails under 1.11).

I have a repository containing a minimal project at https://bitbucket.org/schinckel/inheritance-test"	Bug	assigned	Core (System checks)	1.11	Normal				Accepted	0	0	0	0	0	0