item.rb in canmoia-0.2.0

- old
+ new

@@ -1,5 +1,10 @@
 class Item
   include Mongoid::Document
-  field :value, type: Float
+
+  attr_accessor :product_price
   field :quantity, type: Integer
+
+  def price
+    self.product_price * self.quantity
+  end
 end