在子文件夹中设计带有控制器的 UninitializedConstant ApplicationController

Question

我正在尝试将我的一个应用程序合并到控制器中，并将视图合并到子文件夹中 - 一个用于营销网站，另一个用于应用程序本身。

这是我目前拥有的：

app/controllers
  application_controller.rb
  ...shit ton of other controllers...

这就是我要去的：

app/controllers/app
  application_controller.rb
  ...all controllers related to the app itself...

app/controllers/marketing
  ...all controllers related to the marketing site...

营销网站工作正常，因为不需要身份验证，但应用程序正在轰炸 b/c 设计不知道 application_controller.rb 现在在 app/controllers/app/application_controller.rb

我如何告诉设计我的控制器的位置？

这是我的设计路线：

devise_for :users, :skip => [:sessions]
      as :user do
        get 'login' => 'devise/sessions#new', :as => :new_user_session
        post 'login' => 'devise/sessions#create', :as => :user_session
        delete 'logout' => 'devise/sessions#destroy', :as => :destroy_user_session
        get 'logout' => 'devise/sessions#destroy', :as => :destroy_user_session
      end

堆栈跟踪的一部分：

NameError - uninitialized constant ApplicationController:
  activesupport (3.2.12) lib/active_support/dependencies.rb:520:in `load_missing_constant'
  activesupport (3.2.12) lib/active_support/dependencies.rb:192:in `block in const_missing'
  activesupport (3.2.12) lib/active_support/dependencies.rb:190:in `const_missing'
  activesupport (3.2.12) lib/active_support/inflector/methods.rb:230:in `block in constantize'
  activesupport (3.2.12) lib/active_support/inflector/methods.rb:229:in `constantize'
  activesupport (3.2.12) lib/active_support/core_ext/string/inflections.rb:54:in `constantize'
  devise (2.2.4) app/controllers/devise_controller.rb:2:in `<top (required)>'
  activesupport (3.2.12) lib/active_support/dependencies.rb:469:in `block in load_file'
  activesupport (3.2.12) lib/active_support/dependencies.rb:639:in `new_constants_in'
  activesupport (3.2.12) lib/active_support/dependencies.rb:468:in `load_file'
  activesupport (3.2.12) lib/active_support/dependencies.rb:353:in `require_or_load'
  activesupport (3.2.12) lib/active_support/dependencies.rb:502:in `load_missing_constant'
  activesupport (3.2.12) lib/active_support/dependencies.rb:192:in `block in const_missing'
  activesupport (3.2.12) lib/active_support/dependencies.rb:190:in `const_missing'
  activesupport (3.2.12) lib/active_support/dependencies.rb:514:in `load_missing_constant'
  activesupport (3.2.12) lib/active_support/dependencies.rb:192:in `block in const_missing'
  activesupport (3.2.12) lib/active_support/dependencies.rb:190:in `const_missing'
  activesupport (3.2.12) lib/active_support/dependencies.rb:514:in `load_missing_constant'
  activesupport (3.2.12) lib/active_support/dependencies.rb:192:in `block in const_missing'
  activesupport (3.2.12) lib/active_support/dependencies.rb:190:in `const_missing'
  activesupport (3.2.12) lib/active_support/dependencies.rb:514:in `load_missing_constant'
  activesupport (3.2.12) lib/active_support/dependencies.rb:192:in `block in const_missing'
  activesupport (3.2.12) lib/active_support/dependencies.rb:190:in `const_missing'
  devise (2.2.4) lib/devise/controllers/helpers.rb:80:in `devise_controller?'
  devise (2.2.4) lib/devise/controllers/helpers.rb:48:in `authenticate_user!'

Answer 1

正如@benchwarmer 所说，如果您确实将控制器放在子目录中，则需要相应地命名类名；App::ApplicationController在你的情况下。但是，您似乎需要让所有现有的控制器都继承自App::ApplicationController而不是ApplicationController. 为什么不保持ApplicationController在顶层，如果您需要为主应用程序或营销应用程序的其他方法，例如，创建一个Marketing::MarketingControllerin marketing/which extendsApplicationController并且营销中的所有控制器都可以扩展，对于应用程序目录也是如此。或者，您可以将您的营销控制器放在营销子目录和 Marketing:: 命名空间中，并将您的应用程序控制器留在controllers/而不是为它们设置单独的子目录。无论如何，取决于你。另一个难题是，如果您移动 ApplicationController（或希望设计从任意控制器继承），您需要添加到您的devise.rb初始化程序：

config.parent_controller = "App::ApplicationController"

在您的情况下，如果您将应用程序控制器移动到 app/ 子目录并将其命名空间。这告诉设计它的控制器应该从哪个控制器继承，它默认为ApplicationController当你移动它时它找不到它的原因。