service_objects_bp_2.rb

class CommentsController
  def create  
    @comment = Comment.create(params[:comment])  
    CommentCreatedWorker.perform_async(@comment.id)  
    respond_with @comment  
  end  
end

class CommentCreatedWorker  
  include Sidekiq::Worker

  def perform(comment_id)  
    comment = Comment.find(comment_id)  
    comment_thread = comment.comment_thread
    
    comment_thread.participants.each do |participant|  
      CommentThreadMailer.activity_notification(comment_thread, comment, participant)  
    end

    if comment.previous_comment?  
      in_reply_to_user = comment.previous_comment.author  
      ReplyMailer.notification(in_reply_to_user, comment).deliver  
    end

    Kissmetrics.record(comment.author, 'Added Comment')  
  end  
end