Django: list all reverse relations of a model
This was changed (in 1.8 I think) and Olivier's answer doesn't work anymore. According to the docs, the new way is
[f for f in Item._meta.get_fields() if f.auto_created and not f.concrete]
This includes one-to-one, many-to-one, and many-to-many.
I've found out that there are methods of Model._meta
that can give me what I want.
my_model = get_model('app_name','model_name')# Reverse foreign key relationsreverse_fks = my_model._meta.get_all_related_objects()# Reverse M2M relationsreverse_m2ms = my_model._meta.get_all_related_many_to_many_objects()
By parsing the content of the relations, I can guess whether the "direct" field was a OneToOneField
or whatever.
And what about this :
oneToOneFieldNames = [ field_name for field_name in Item._meta.get_all_field_names() if isinstance( getattr( Item._meta.get_field_by_name(field_name)[0], 'field', None ), models.OneToOneField )]
RelatedObject may have a Field attribute for relations. You just have to check if this is a OneToOne field and you can retrieve only what you want