Hi all I believe the issue I have enquired about on the following Stack Exchange page :
https://stackoverflow.com/questions/62162288/baffling-error-filtering-django-objects-of-derived-class-by-values-in-foreign-ke may well be a Django bug, or at the least no longer works with Django as this has evolved since v 1.10 (when it worked fine). In summary, the issue is that if a model class B inherits from A, which inherits from models.model, then a call to B.objects.filter() cannot locate a field actually defined in B (because, it seems, Django starts its walk through the relevant/related models from A rather than B and for some unfathomable reason checks everything _except_ B !) Regards John R Ramsden -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/f694d71d-bb1a-4e60-80ff-c8589f797f51%40googlegroups.com.
