otoplastik_customer.rb

class OtoplastikCustomer < Customer
  def otoplastik?
    true
  end

  def find_prices(article_id, merchant_id)
    OtoplastikArticlePrice.where("otoplastik_article_id = ? AND merchant_code = ?", article.id, self.id).order("minimum DESC")
  end

  def prices(article)
    prices = find_prices(article.id, self.id)
    unless prices.exists?
      prices = find_prices(article.id, self.price_group)
    end

    unless prices.exists?
      prices = find_prices(article.id, self.price_list)
    end
  end
end