Given these models:
class District(models.Model, models.GeoMixin):
tea_number = models.CharField(maxlength=20, unique=True)
class School(models.Model, models.GeoMixin):
district = models.ForeignKey(District, to_field='tea_number')
I expect this to work:
a_district = District.objects.all()[0]
Schools.objects.filter(district=a_district)
So that a_district's tea_nuumber attribute is used for the criteria against the School table rather than the District's PK.
django.db.models.query.lookup_inner (line 1082) has the bug:
# RelatedObject is from a 1-1 relation,
# No need to join; get the pk value from the related object,
# and compare using that.
column = current_opts.pk.name
I'll try to work up a patch for it. Tired now.
