自动在控制器中包含 Gem [英] Automatically include a Gem in a controller

问题描述

我目前正在使用一个 gem，它有一些我想包含到我的控制器类中的方法，但我希望它在安装时自动包含它自己.因此，例如，include MyGem 将不是必需的.

I am currently working a gem that has some metlhods that I want to include into my controller classes, but I would like it to automatically include itself upon installation. So, for example, include MyGem, will not be required.

我试过使用扶手带，但我不确定这是否是正确的方法，因为据我所知它不起作用.它看起来类似于:

I tried using a railtie, but I am unsure if that is the right way since it doesn't work as far as I can tell. It looks similar to:

require 'my_gem'

module MyGem
  class Railtie < Rails::Railtie
  initializer "my_gem.method_items" do
   ActionController::Base.send :include, MethodItems
  end
 end
end

任何帮助都会很棒

推荐答案

module MyGem
  module InstanceMethods
    def foo
      "bar"
    end
  end
end

module MyGem
  class Engine < Rails::Engine
    initializer "testing" do |app|
      ActionController::Base.send :include, MyGem::InstanceMethods
    end
  end
end

然后在控制台:

ActionController::Base.instance_methods.grep(/foo/)
=> ["foo"] 

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