Ruby on rails 如何修复：i18n始终转换为默认语言环境

我正在尝试用i18n实现Rails应用程序的国际化。我用两种语言做了一些小测试：英语和法语

我遇到的问题是i18n总是转换为默认语言环境。因此，如果是英语，一切都将是英语，法语也是如此

以下是我尝试过的：

config/initializers/locales.rb

# Permitted locales available for the application
I18n.available_locales = [:en, :fr]

class ApplicationController < ActionController::Base

    def default_url_options
        { locale: I18n.locale }
    end

end

module LanguageApp
  class Application < Rails::Application
    ...
    config.i18n.load_path += Dir["#{Rails.root.to_s}/config/locales/**/*.{rb,yml}"]
    config.i18n.default_locale = :en
    # I change the default locale here to :fr or :en
  end
end

root to: "home#index"

get '/:locale/about' => 'about#index'
get '/:locale' => 'home#index'

About us page. <%= t(:about) %>

This is the homepage. <%= t(:welcome) %>

app/controllers/application\u controller.rb

# Permitted locales available for the application
I18n.available_locales = [:en, :fr]

class ApplicationController < ActionController::Base

    def default_url_options
        { locale: I18n.locale }
    end

end

module LanguageApp
  class Application < Rails::Application
    ...
    config.i18n.load_path += Dir["#{Rails.root.to_s}/config/locales/**/*.{rb,yml}"]
    config.i18n.default_locale = :en
    # I change the default locale here to :fr or :en
  end
end

root to: "home#index"

get '/:locale/about' => 'about#index'
get '/:locale' => 'home#index'

About us page. <%= t(:about) %>

This is the homepage. <%= t(:welcome) %>

我将我的yml文件组织如下：

config/locales/views/about/en.yml

en:
  about: "This page is about us."

fr:
  about: "Cette page est à propos de nous."

en:
  welcome: "Hello world"

fr:
  welcome: "Bonjour le monde"

config/locales/views/about/fr.yml

en:
  about: "This page is about us."

fr:
  about: "Cette page est à propos de nous."

en:
  welcome: "Hello world"

fr:
  welcome: "Bonjour le monde"

config/locales/views/home/en.yml

en:
  about: "This page is about us."

fr:
  about: "Cette page est à propos de nous."

en:
  welcome: "Hello world"

fr:
  welcome: "Bonjour le monde"

config/locales/views/home/fr.yml

en:
  about: "This page is about us."

fr:
  about: "Cette page est à propos de nous."

en:
  welcome: "Hello world"

fr:
  welcome: "Bonjour le monde"

最后，我的观点是：

app/views/about/index.html.erb

# Permitted locales available for the application
I18n.available_locales = [:en, :fr]

class ApplicationController < ActionController::Base

    def default_url_options
        { locale: I18n.locale }
    end

end

module LanguageApp
  class Application < Rails::Application
    ...
    config.i18n.load_path += Dir["#{Rails.root.to_s}/config/locales/**/*.{rb,yml}"]
    config.i18n.default_locale = :en
    # I change the default locale here to :fr or :en
  end
end

root to: "home#index"

get '/:locale/about' => 'about#index'
get '/:locale' => 'home#index'

About us page. <%= t(:about) %>

This is the homepage. <%= t(:welcome) %>

这3个URL为我提供了相同的内容，因此：fr语言环境实际上不起作用（它返回与：en相同的翻译）

同样适用于

localhost:3000/en/about
localhost:3000/fr/about

我还在rails控制台中进行了尝试：

> I18n.t(:welcome, :en)
"Hello world"
> I18n.t(:welcome, :fr)
"Hello world"

---

首先设置请求的区域设置：

class ApplicationController < ActionController::Base
    around_action :switch_locale

    def switch_locale(&action)
        I18n.with_locale(params[:locale] || I18n.default_locale, &action)
    end

    def default_url_options
        { locale: I18n.locale }
    end
end

然后在视图中使用隐式查找：

<h1><%= t(.welcome) %></h1>

---

这解析了

主页的键。欢迎

当一个新的区域设置来自paramsI时，我看不出您正在设置/更改I18n.locale。我忘了提到我是如何更改它的。我正在编辑我的问题。谢谢，现在可以了。我缺少的是switch_locale方法，之后一切都很好。谢谢