Rails 3:如何在 application.rb 中声明 Rack 中间件 [英] Rails 3: How to declare Rack middleware in application.rb

问题描述

很多例子，比如这两个:

Many examples such as these two:

如何在 Rails3 中使用机架中间件?

http://asciicasts.com/episodes/151-rack-middleware

在一个类中定义中间件然后添加

define middleware in a class and then add

config.middleware.use "ClassNameHere"

to config/application.rb 但我不知道在 application.rb 中的哪个位置添加它.我把它放在 class Application < 里面Rails::应用程序.我也不确定是否有放置中间件类的特定位置.我在/lib 中有我的.

to config/application.rb but I can't figure where in application.rb to add this. I have put it inside of class Application < Rails::Application. I am also not sure if there is a specific location where I put my middleware class. I have mine in /lib.

假设我的中间件类称为 ResponseTimer，当我运行 rake middleware 时收到以下错误:未初始化的常量ResponseTimer

Say my middleware class is called ResponseTimer, I receive the following error when I run rake middleware: uninitialized constant ResponseTimer

请注意，我使用的是 Rails 3.1 而不是 2.x，这就是为什么我没有将 config.middleware.use 放在 environment.rb 中

Please note that I am in Rails 3.1 and not 2.x which is why I am not putting the config.middleware.use in environment.rb

推荐答案

add config.autoload_paths += %W(#{config.root}/lib) 到 config/application.rb 见这里 https://github.com/雷达/指南/blob/master/rails-lib-files.md

add config.autoload_paths += %W(#{config.root}/lib) to config/application.rb See here https://github.com/radar/guides/blob/master/rails-lib-files.md

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