product.rb in money-rails-0.4.0

- old
+ new

@@ -1,17 +1,20 @@
 class Product < ActiveRecord::Base
 
   attr_accessible :price_cents, :discount, :bonus_cents,
-    :price, :discount_value, :bonus
+    :price, :discount_value, :bonus, :optional_price_cents, :optional_price
 
   # Use USD as model level currency
   register_currency :usd
 
   # Use money-rails macros
   monetize :price_cents
 
   # Use a custom name for the Money attribute
   monetize :discount, :as => "discount_value"
+
+  # Allow nil
+  monetize :optional_price_cents, :allow_nil => true
 
   # Override default currency (EUR) with a specific one (GBP) for this field only
   monetize :bonus_cents, :with_currency => :gbp
 
 end