Contents

module ActiveRecord
  module Acts
    module ShoppingCart
      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)
          if item
            item.quantity * item.price
          end
        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)
          if item
            item.quantity = new_quantity
            item.save
          end
        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)
          if item
            item.price = new_price
            item.save
          end
        end
      end
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
acts_as_shopping_cart-0.0.3	lib/active_record/acts/shopping_cart/item_instance_methods.rb
acts_as_shopping_cart-0.0.2	lib/active_record/acts/shopping_cart/item_instance_methods.rb
acts_as_shopping_cart-0.0.1	lib/active_record/acts/shopping_cart/item_instance_methods.rb