Include updater_name in /comments/1.json.

app/controllers/comments_controller.rb

@@ -48,9 +48,7 @@ class CommentsController < ApplicationController
 
   def show
     @comment = Comment.find(params[:id])
-    respond_with(@comment) do |format|
-      format.json {render :json => @comment.to_json(:methods => [:creator_name])}
-    end
+    respond_with(@comment)
   end
 
   def destroy

app/models/comment.rb

@@ -199,6 +199,10 @@ class Comment < ActiveRecord::Base
     super + [:body_index]
   end
 
+  def method_attributes
+    super + [:creator_name, :updater_name]
+  end
+
   def delete!
     update_attributes(:is_deleted => true)
   end