search for: studio_id

...Movie < ActiveRecord::Base belongs_to :studio has_and_belongs_to_many :actors end class Actor < ActiveRecord::Base has_and_belongs_to_many :studios has_and_belongs_to_many :movies end The underlying database structure is as follows: studios id: integer movies id: integer studio_id: integer actors id: integer actors_studios actor_id: integer studio_id: integer actors_movies actor_id: integer movie_id: integer (Note that in this case I am not using a movies_studios table) The question I want to answer is, given an actor_id and studio_id, how do I find all rel...