title: How I can skip callback in action
body: <p>I have controller looks like</p>
  
  <pre><code>class BarsController &lt; ApplicationController
     after_action :some_method, only: [:index]
  
     def index
        get_cache = $redis.get('some_key')
        if get_cache.present?
            # i want to skip after_action callback in here
        else
            # other stuff
        end
     end
  end
  </code></pre>
  
  <p>How can I skip <code>after_action :some_method</code> if <code>get_cache</code> is present? I know I can do this with conditional like this</p>
  
  <pre><code>class BarsController &lt; ApplicationController
     after_action :some_method, only: [:index], unless: :check_redis
  
     def index
        get_cache = $redis.get('some_key')
        if get_cache.present?
            # i want to skip after_action callback in here
        else
            # other stuff
        end
     end
  
  
     private
  
     def check_redis
       $redis.get('some_key')
     end
  end
  </code></pre>
  
  <p>But I think that is redundant, because should multiple get to redis.</p>