Contents

module ActiveRecord
  module Acts
    module ShoppingCartItem
      module InstanceMethods
        #
        # Returns the subtotal, multiplying the quantity times the price of the item.
        #
        def subtotal
          format("%.2f", quantity * price).to_f
        end

        #
        # Updates the quantity of the item
        #
        def update_quantity(new_quantity)
          self.quantity = new_quantity
          save
        end

        #
        # Updates the price of the item
        #
        def update_price(new_price)
          self.price = new_price
          save
        end
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
acts_as_shopping_cart-0.4.1	lib/active_record/acts/shopping_cart_item/instance_methods.rb
acts_as_shopping_cart-0.4.0	lib/active_record/acts/shopping_cart_item/instance_methods.rb