shipping.rb in kosher-0.7.0

- old
+ new

@@ -1,26 +1,19 @@
 module Kosher
   # Shipping details of an offer.
   #
   # Shipping costs something (or nothing) and is subject to availability.
   class Shipping < Structure
-    key     :cents, :type => Integer
-    key     :currency
+    has_one :cost
     has_one :availability
 
     # Returns whether the item ships for free.
     def free?
-      cents == 0
+      cost.cents == 0
     end
 
     # Returns true if the item is available to ship.
     def kosher?
       availability.kosher?
-    end
-
-    # The shipping cost.
-    def cost
-      raise TypeError, "Can't render money" unless cents
-      Money.new(cents, currency)
     end
   end
 end