Losing an Attribute When Saving Through an Association w/ Scope (Rails 4.0.0)

Question

The Code (Rails 4.0.0)

class Track < ActiveRecord::Base
  has_many :artist_tracks
  has_many :owning_artists,
              -> { where(:artist_tracks         


        

Answer 1

I believe that what is happening is that the associated model actually being created here is the join model, artist_tracks, and not the association with the actual conditions on it. You could probably fix this by declaring an alternate join association with conditions on it, and then attaching owning_artists through that instead. Like this:

class Track < ActiveRecord::Base
  has_many :artist_tracks
  has_many :owning_artist_tracks,
              -> { where(:artistic_role_id => 1) },
              :class_name => "ArtistTrack"
  has_many :owning_artists,
              :through => :owning_artist_tracks,
              :source => :artist
end