django model foreign key queryset selecting related fields

Question

I am trying to select from the join of the two related tables in DJango as shown below. But I am not able get the field name of the other table.

In SQL

Answer 1

phonenumber is a field on person, so you need to pass in person__phonenumber

m=Membership.objects.filter(person__name='x').values('person','person__phonenumber').