如何获得外键的related_name？

Question

In django I can define a foreign key like so:

class MyModel(model)
    foo = models.ForeignKey(foo,related_name="bar")

Given a field name on a model, how can I get the related_name ( not the related field ) for that field?

Answer 1

If you know the class:

MyModel._meta.get_field('foo').related_query_name()

If you have an instance:

model._meta.get_field('foo').related_query_name()

Answer 2

It can be gotten like so:

> getattr(MyModel,'foo').field.rel.get_accessor_name()
'bar'