def create
  @post = Post.find(params[:post_id])
  @comment = @post.comments.build(params[:comment])
  @comment.user_id = logged_in_user.id
  if params[:reply_id]
          @reply = Comment.find_by_id(params[:reply_id])
          @comment.parent_id = params[:reply_id]
          @comment.replier = @reply.user_id
          @user = User.find(@reply.user_id)
          @user.update_attributes(:replied => 1)          
  end

   respond_to do |format|
     if @comment.save
       format.js
     else
       format.js   { redirect_to post_path(@post)}
     end
   end
 end