Contents

module ActiveRecord
  module Acts
    module ShoppingCart
      module Item
        module InstanceMethods

          #
          # Returns the cart item for the specified object
          #
          def item_for(object)
            cart_items.where(:item_id => object.id).first
          end

          #
          # Returns the subtotal of a specified item by multiplying the quantity times
          # the price of the item.
          #
          def subtotal_for(object)
            item = item_for(object)
            item ? item.subtotal : 0
          end

          #
          # Returns the quantity of the specified object
          #
          def quantity_for(object)
            item = item_for(object)
            item ? item.quantity : 0
          end

          #
          # Updates the quantity of the specified object
          #
          def update_quantity_for(object, new_quantity)
            item = item_for(object)
            item.update_quantity(new_quantity) if item
          end

          #
          # Returns the price of the specified object
          #
          def price_for(object)
            item = item_for(object)
            item ? item.price : 0
          end

          #
          # Updates the price of the specified object
          #
          def update_price_for(object, new_price)
            item = item_for(object)
            item.update_price(new_price) if item
          end
        end
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
acts_as_shopping_cart-0.1.0	lib/active_record/acts/shopping_cart/item/instance_methods.rb