一种将 before_filter 从引擎添加到应用程序的方法 [英] A way to add before_filter from engine to application

问题描述

没有很多具体的代码，这只是模糊的，但我会提供我能提供的.

Without a lot of specific code, this is just vague, but I'll provide what I can.

给定一个 rails 引擎，一个基本引擎，而不是它自己空间中的可安装引擎，我如何使来自引擎的方法可用于应用程序作为应用程序控制器的 before_filter?

Given a rails engine, a basic engine and not a mountable engine in its own space, how do I make methods from the engine available to the application as a before_filter for the applications controllers?

我一直在浏览 Devise 代码，因为我想要的内容与我使用 Devise 的经验相似，但我承认我不太了解我正在阅读的内容.

I've been looking through the Devise code, because what I want to is similar from my experience with Devise, but I'll admit I don't understand a lot of what I'm going over.

如果我将 include Myengine::Mymodule 放在我希望方法可用于过滤的应用程序控制器中，我可以做到这一点，但我希望可以只使用这些方法而不必包括模块.

I can do this if I put include Myengine::Mymodule in the apps controllers where I want to have the methods available for filtering, but I want it possible to just use the methods without having to include the modules.

这是尝试将 rails 应用程序转变为供多个 rails 应用程序使用的引擎的最新障碍，不胜感激任何有关处理正确命名空间、模块配置等的指导.

This is the latest roadblock in trying to turn a rails application into an engine to be used by multiple rails apps, and any guidance on getting a handle on proper namespacing, module config, etc., is appreciated.

推荐答案

如果我理解正确，您可以使用初始化程序，例如:

If I understood you correctly you can use initializer, for example:

module MyEngine
    class Engine < Rails::Engine
        initializer  "myengine.load_helpers" do
            ActiveSupport.on_load(:action_controller) do
                include MyEngine::Helpers
            end
        end
    end
end

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