gistfile1.rb

class User < ActiveRecord::Base
  attr_accessible :fb_id, :name, :profile_img_url, :spotify_id

  has_many :votes
  has_many :songs, through: :votes
end

class Vote < ActiveRecord::Base
  belongs_to :user
  belongs_to :song
end

class Song < ActiveRecord::Base
  attr_accessible :album_name, :artist_name, :name, :spotify_id, :spotify_url, :thumb_url

  has_many :votes
  has_many :users, through: :votes
end