ruby-on-rails-3.2 - i18n 路由到已安装的引擎 - 忽略语言环境

Question

我有一个内置了 i18n 支持的应用程序 (my_test_app)。目前，有两种语言文件可用，FR 和 EN，如果我在它们之间来回切换，对于非引擎功能(例如用户索引/显示/编辑/删除 (ISED))，一切都如我所愿选项。

在 my_test_app 中，我安装了一个 Rails 引擎(my_engine)，它有一个 Controller 和模型集(engine_job)。所以，一个可行的 URL 应该是

http://0.0.0.0:3000/fr/my_engine/engine_job

然而，无论我选择哪种语言，它总是出现在 EN 中。检查参数显示:

--- !ruby/hash:ActiveSupport::HashWithIndifferentAccess
locale: fr
action: index
controller: my_engine/engine_job

然而选择的翻译是EN。

my_test_app route.rb:

MyTestApp::Application.routes.draw do

  scope "(:locale)", locale: /#{I18n.available_locales.join("|")}/ do
    mount MyEngine::Engine, at: "/my_engine"
  end # scope locale

  match '*path', to: redirect("/#{I18n.default_locale}/%{path}"), constraints: lambda { |req| !req.path.starts_with? "/#{I18n.default_locale}/" and !req.path == "/#{I18n.default_locale}/"}
  match '', to: redirect("/#{I18n.default_locale}/")
end

my_engine route.rb:

MyEngine::Engine.routes.draw do
  resources :my_jobs
end

耙路线:

my_engine        (/:locale)/my_engine           MyEngine::Engine {:locale=>/en|fr/}
                             /*path(.:format)                    :controller#:action
                             /                                   :controller#:action
                users GET    (/:locale)/users(.:format)          users#index {:locale=>/en|fr/}
                      POST   (/:locale)/users(.:format)          users#create {:locale=>/en|fr/}
             new_user GET    (/:locale)/users/new(.:format)      users#new {:locale=>/en|fr/}
            edit_user GET    (/:locale)/users/:id/edit(.:format) users#edit {:locale=>/en|fr/}
                 user GET    (/:locale)/users/:id(.:format)      users#show {:locale=>/en|fr/}
                      PUT    (/:locale)/users/:id(.:format)      users#update {:locale=>/en|fr/}
                      DELETE (/:locale)/users/:id(.:format)      users#destroy {:locale=>/en|fr/}
             sessions POST   (/:locale)/sessions(.:format)       sessions#create {:locale=>/en|fr/}
          new_session GET    (/:locale)/sessions/new(.:format)   sessions#new {:locale=>/en|fr/}
              session DELETE (/:locale)/sessions/:id(.:format)   sessions#destroy {:locale=>/en|fr/}
               signup        (/:locale)/signup(.:format)         users#new {:locale=>/en|fr/}
               signin        (/:locale)/signin(.:format)         sessions#new {:locale=>/en|fr/}
              signout DELETE (/:locale)/signout(.:format)        sessions#destroy {:locale=>/en|fr/}
                 help        (/:locale)/help(.:format)           static_pages#help {:locale=>/en|fr/}
                about        (/:locale)/about(.:format)          static_pages#about {:locale=>/en|fr/}
                 root        /(:locale)(.:format)                static_pages#home {:locale=>/en|fr/}

Routes for MyEngine::Engine {:locale=>/en|fr/}:
    engine_jobs GET    /engine_jobs(.:format)          my_engine/engine_jobs#index
                POST   /engine_jobs(.:format)          my_engine/engine_jobs#create
 new_engine_job GET    /engine_jobs/new(.:format)      my_engine/engine_jobs#new
edit_engine_job GET    /engine_jobs/:id/edit(.:format) my_engine/engine_jobs#edit
     engine_job GET    /engine_jobs/:id(.:format)      my_engine/engine_jobs#show
                PUT    /engine_jobs/:id(.:format)      my_engine/engine_jobs#update
                DELETE /engine_jobs/:id(.:format)      my_engine/engine_jobs#destroy

此外，在引擎中单击的任何链接都会将语言设置为 EN。一些网络搜索并没有真正说明这里可能发生的事情，因为我能找到的所有 i18n 示例都不涉及安装的引擎。

编辑:显示代码以设置默认语言环境
my_test_app/app/controllers/application_controller.rb:

class ApplicationController < ActionController::Base
  protect_from_forgery
  helper MyEngine::Engine.helpers

  ActiveRecord::Base.verify_active_connections!

  before_filter :set_locale

  private
    def set_locale
      I18n.locale = params[:locale] || I18n.default_locale
      Rails.application.routes.default_url_options[:locale]= I18n.locale
      logger.debug "My_Test_App:  default_url_options is passed options: #{Rails.application.routes.default_url_options.inspect}\n"
      # current_user.locale
      # request.subdomain
      # request.env["HTTP_ACCEPT_LANGUAGE"]
      # request.remote_ip
    end # set_locale

end # class ApplicationController

/编辑

EDIT2(Pierre 8 月 9 日 15:59 建议更改后的路线图):

一条申请路线 yield http://0.0.0.0:3000/en/users与 "locale"=>"en" . Helper 创建的引擎路由看起来像 http://0.0.0.0:3000/my_engine?locale=en/engine_jobs和 yield No route matches [GET] "/my_engine" .

my_engine_plugin        /my_engine                     MyEnginePlugin::Engine
                users GET    (/:locale)/users(.:format)          users#index {:locale=>/en|fr/}
                      POST   (/:locale)/users(.:format)          users#create {:locale=>/en|fr/}
             new_user GET    (/:locale)/users/new(.:format)      users#new {:locale=>/en|fr/}
            edit_user GET    (/:locale)/users/:id/edit(.:format) users#edit {:locale=>/en|fr/}
                 user GET    (/:locale)/users/:id(.:format)      users#show {:locale=>/en|fr/}
                      PUT    (/:locale)/users/:id(.:format)      users#update {:locale=>/en|fr/}
                      DELETE (/:locale)/users/:id(.:format)      users#destroy {:locale=>/en|fr/}
             sessions POST   (/:locale)/sessions(.:format)       sessions#create {:locale=>/en|fr/}
          new_session GET    (/:locale)/sessions/new(.:format)   sessions#new {:locale=>/en|fr/}
              session DELETE (/:locale)/sessions/:id(.:format)   sessions#destroy {:locale=>/en|fr/}
               signup        (/:locale)/signup(.:format)         users#new {:locale=>/en|fr/}
               signin        (/:locale)/signin(.:format)         sessions#new {:locale=>/en|fr/}
              signout DELETE (/:locale)/signout(.:format)        sessions#destroy {:locale=>/en|fr/}
                 help        (/:locale)/help(.:format)           static_pages#help {:locale=>/en|fr/}
                about        (/:locale)/about(.:format)          static_pages#about {:locale=>/en|fr/}
                 root        /(:locale)(.:format)                static_pages#home {:locale=>/en|fr/}

Routes for MyEnginePlugin::Engine:
    engine_jobs GET    (/:locale)/engine_jobs(.:format)          my_engine_plugin/engine_jobs#index {:locale=>/en|fr/}
                     POST   (/:locale)/engine_jobs(.:format)          my_engine_plugin/engine_jobs#create {:locale=>/en|fr/}
 new_engine_job GET    (/:locale)/engine_jobs/new(.:format)      my_engine_plugin/engine_jobs#new {:locale=>/en|fr/}
edit_engine_job GET    (/:locale)/engine_jobs/:id/edit(.:format) my_engine_plugin/engine_jobs#edit {:locale=>/en|fr/}
     engine_job GET    (/:locale)/engine_jobs/:id(.:format)      my_engine_plugin/engine_jobs#show {:locale=>/en|fr/}
                     PUT    (/:locale)/engine_jobs/:id(.:format)      my_engine_plugin/engine_jobs#update {:locale=>/en|fr/}
                     DELETE (/:locale)/engine_jobs/:id(.:format)      my_engine_plugin/engine_jobs#destroy {:locale=>/en|fr/}

/EDIT2(Pierre 8 月 9 日 15:59 建议更改后的路线图)

因此，问题是我需要对路线或引擎进行哪些更改才能使其按预期工作？

提前感谢您的时间和建议!

Answer 1

我正在使用带有 I18n 的 Engine，它工作正常。我创建了一个虚拟的 Rails 应用程序来尝试您的场景。据我所知，更改 URL 内的语言环境可以很好地处理 Rails 应用程序中定义的路由:

我的路线:

Bar::Application.routes.draw do
  root 'posts#index'

  scope "(:locale)", locale: /#{I18n.available_locales.join("|")}/ do
    resources :posts, only: :index
  end
end

我可以通过以下方式更改 I18n 语言环境:

http://localhost:3000/fr/posts
http://localhost:3000/en/posts

我认为你的问题是当你想要去任何引擎的路线时，因为你没有设置 I18n 语言环境开关。见下图:

engine_jobs GET    /engine_jobs(.:format)

然后，当去 /engine_jobs即使您在 URL 中指定了语言环境，也会设置 I18n 默认语言环境( en ):

def set_locale
  I18n.locale = params[:locale] || I18n.default_locale
  # ...
end

使用引擎路由时， params[:locale]是 nil
解决方案

将相同的逻辑添加到引擎的路由中:
config/routes.rb

MyTestApp::Application.routes.draw do

  mount MyEngine::Engine, at: "/my_engine"

  match '*path', to: redirect("/#{I18n.default_locale}/%{path}"), constraints: lambda { |req| !req.path.starts_with? "/#{I18n.default_locale}/" and !req.path == "/#{I18n.default_locale}/"}
  match '', to: redirect("/#{I18n.default_locale}/")
end

your_engine/config/routes.rb

MyEngine::Engine.routes.draw do
  scope "(:locale)", locale: /#{I18n.available_locales.join("|")}/ do
    resources :my_jobs
  end
end

mount MyEngine::Engine, at: "/my_engine"只告诉 rails“加载”所有引擎路由。如果你需要添加约束、作用域、命名空间或其他任何东西，你应该使用通常的 rails 方式来做，但在你引擎的路由文件中。

最后，您需要更新您的 application_controller.rb (主应用程序 + 引擎)具有以下功能:

class ApplicationController < ActionController::Base
  def url_options
    { locale: I18n.locale }
  end

  def set_locale
    I18n.locale = params[:locale] || I18n.default_locale
    Rails.application.routes.default_url_options[:locale]= I18n.locale
  end
end