lib/mongoid/timestamps/updated.rb in mongoid-2.3.5 vs lib/mongoid/timestamps/updated.rb in mongoid-2.4.0

@@ -6,21 +6,31 @@
     module Updated
       extend ActiveSupport::Concern
 
       included do
         field :updated_at, :type => Time, :versioned => false
-        set_callback :save, :before, :set_updated_at, :if => Proc.new { |doc|
-          doc.timestamping? && (doc.new_record? || doc.changed?)
-        }
+        set_callback :save, :before, :set_updated_at, :if => :able_to_set_updated_at?
       end
 
       # Update the updated_at field on the Document to the current time.
       # This is only called on create and on save.
       #
       # @example Set the updated at time.
       #   person.set_updated_at
       def set_updated_at
         self.updated_at = Time.now.utc unless updated_at_changed?
+      end
+
+      # Is the updated timestamp able to be set?
+      #
+      # @example Can the timestamp be set?
+      #   document.able_to_set_updated_at?
+      #
+      # @return [ true, false ] If the timestamp can be set.
+      #
+      # @since 2.4.0
+      def able_to_set_updated_at?
+        !frozen? && timestamping? && (new_record? || changed?)
       end
     end
   end
 end