gistfile1.rb

  def publish
    if approved?
      if !is_for_the_future?
        publish!
        if publish_in_twitter
          if result = publish_on_twitter
            self.twitter_status = result
          end
        end
        save!
      end
    end
  end

  def is_for_the_future?
    publish_datetime.to_time > DateTime.now.to_time
  end