+++ /dev/null
-class Product < ActiveRecord::Base
- set_primary_keys :id # redundant
- has_many :product_tariffs, :foreign_key => :product_id
- has_one :product_tariff, :foreign_key => :product_id
-
- has_many :tariffs, :through => :product_tariffs, :foreign_key => [:tariff_id, :tariff_start_date]
-end