放置多个控制器之间共享的before_filter的位置 [英] Where to put a before_filter shared between multiple controllers

问题描述

我有多个控制器，它们都使用相同的before_filter.为了保持干燥，该方法应该放在哪里，以便所有控制器都可以使用它?尽管我不确定为什么，但模块似乎不是正确的地方.我不能将其放在基类中，因为控制器已经具有不同的超类.

I have multiple controllers that all use an identical before_filter. In the interests of keeping things dry, where should this method live so that all the controllers can use it? A module doesn't seem like the right place, though I'm not sure why. I can't put it in a base class as the controllers already have different superclasses.

推荐答案

如何将before_filter和方法放在模块中并将其包含在每个控制器中.我将此文件放在lib文件夹中.

How about putting your before_filter and method in a module and including it in each of the controllers. I'd put this file in the lib folder.

module MyFunctions

  def self.included(base)
    base.before_filter :my_before_filter
  end

  def my_before_filter
    Rails.logger.info "********** YEA I WAS CALLED ***************"
  end
end

然后在您的控制器中，您要做的就是

Then in your controller, all you would have to do is

class MyController < ActionController::Base
  include MyFunctions
end

最后，我将确保自动加载lib.打开config/application.rb并将以下内容添加到您的应用程序的类中.

Finally, I would ensure that lib is autoloaded. Open config/application.rb and add the following to the class for your application.

config.autoload_paths += %W(#{config.root}/lib)

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