Ruby-on-Rails: Multiple has_many :through possible?
Edit: Rails 3.1 supports nested associations. E.g: has_many :tasks has_many :assigments, :through => :tasks has_many :users, :through => :assignments There is no need for the solution given below. Refer to this screencast for more details. Original Answer You are passing a has_many :through association as a source for another has_many :through association. I don’t think … Read more