commentable.rb in dm-is-remixable-0.10.0

- old
+ new

@@ -2,10 +2,12 @@
   include DataMapper::Resource
 
   is :remixable,
     :suffix => "comment"
 
-  property :id,         Integer, :key => true, :serial => true
+  property :id,         Serial
   property :comment,    String
   property :created_at, DateTime
+
+  validates_present :comment, :context => [ :publish ]
 
 end