gistfile1.rb

class Restaurant < ActiveRecord::Base
  has_many :restaurant_cuisines, :dependent => :delete_all
  has_many :cuisines, :through => :restaurant_cuisines
end

class Cuisine < ActiveRecord::Base
  has_many :restaurant_cuisines, :dependent => :delete_all
  has_many :restaurants, :through => :restaurant_cuisines
end

class RestaurantCuisine < ActiveRecord::Base
  belongs_to :restaurant
  belongs_to :cuisine
end