Rails 3.2 的工作 L10N 解决方案答案

【问题标题】：Working L10N solution for Rails 3.2Rails 3.2 的工作 L10N 解决方案
【发布时间】：2012-01-24 10:03:42
【问题描述】：

我正在开发一个多语言 (EN/RU) 网站，我需要一个能够翻译数据库记录的解决方案？

是否有任何第三方插件可让您维护多语言网站？理想情况下，它应该与rails_admin（或最坏情况下的脚手架）和routing-filter 一起使用。

我现在使用globalize3，它也通过 rails_admin 创建翻译。但是没有办法指定语言环境。它只会为您当前的语言环境创建翻译，即无法真正翻译记录，因为它只是复制原始条目。而且我认为没有办法创建英文翻译。

提前致谢！

宝石文件

source 'https://rubygems.org'

gem 'rails', '3.2.0'

gem 'sqlite3'
gem 'pg', :require => 'pg'
gem 'memcache-client'

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '~> 3.2.3'
  gem 'coffee-rails', '~> 3.2.1'
  gem 'uglifier', '>= 1.0.3'
end

gem 'jquery-rails'
gem 'russian'
gem 'dynamic_form'
gem 'friendly_id', '~> 4.0.0'
gem 'routing-filter'
gem 'devise'
gem 'cancan'
gem 'paper_trail', '~> 2'
gem 'rails_admin', :git => 'git://github.com/sferik/rails_admin.git'
gem 'globalize3', '~> 0.2.0.beta6', :git => 'git://github.com/svenfuchs/globalize3.git'

# To use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.0.0'

# To use Jbuilder templates for JSON
# gem 'jbuilder'

gem 'unicorn'
gem 'capistrano'

# To use debugger
# gem 'ruby-debug19', :require => 'ruby-debug'

config/application.rb

config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
config.i18n.default_locale = :ru

models/page.rb

class Page < ActiveRecord::Base
  translates :title, :content
  validates_presence_of :title
end

Rails 控制台输出：

Loading development environment (Rails 3.2.0)
1.9.3p0 :001 > p = Page.new(:title => 'Test 1')
  Page::Translation Load (0.2ms)  SELECT "page_translations".* FROM "page_translations" WHERE "page_translations"."page_id" IS NULL AND "page_translations"."locale" = 'ru' LIMIT 1
 => #<Page id: nil, title: "Test 1", slug: nil, content: nil, created_at: nil, updated_at: nil> 
1.9.3p0 :002 > p.save
   (0.1ms)  begin transaction
  SQL (13.9ms)  INSERT INTO "pages" ("content", "created_at", "slug", "title", "updated_at") VALUES (?, ?, ?, ?, ?)  [["content", nil], ["created_at", Tue, 24 Jan 2012 14:01:28 MSK +04:00], ["slug", nil], ["title", "Test 1"], ["updated_at", Tue, 24 Jan 2012 14:01:28 MSK +04:00]]
  SQL (0.5ms)  INSERT INTO "page_translations" ("content", "created_at", "locale", "page_id", "title", "updated_at") VALUES (?, ?, ?, ?, ?, ?)  [["content", nil], ["created_at", Tue, 24 Jan 2012 14:01:28 MSK +04:00], ["locale", "ru"], ["page_id", 5], ["title", nil], ["updated_at", Tue, 24 Jan 2012 14:01:28 MSK +04:00]]
  Page::Translation Load (0.1ms)  SELECT "page_translations".* FROM "page_translations" WHERE "page_translations"."page_id" = 5 AND "page_translations"."locale" = 'ru' LIMIT 1
   (0.4ms)  UPDATE "page_translations" SET "title" = 'Test 1', "updated_at" = '2012-01-24 10:01:28.298579' WHERE "page_translations"."id" = 5
  Page::Translation Load (0.1ms)  SELECT "page_translations".* FROM "page_translations" WHERE "page_translations"."id" = ? LIMIT 1  [["id", 5]]
   (2.2ms)  commit transaction
 => true

【问题讨论】：

标签： ruby-on-rails localization internationalization ruby-on-rails-plugins

【解决方案1】：

如果您只有两种语言，最好将翻译保存在同一张表中，例如：

create_table "articles" do |t|
  ...
  t.column "title_ru", :string
  t.column "title_en", :string
  t.column "body_ru", :text
  t.column "body_en", :text
  ...
end

然后扩展ActiveRecord::Base类提供翻译方法：

module Translate

  def self.included(base)
    base.extend ClassMethods
  end

  module ClassMethods
    def translate *columns
      columns.each do |column|
        class_eval <<-EOV
          def #{column}
            unless self.send("#{column}_#{I18n.locale}")
              self.send("#{column}_#{I18n.locale}")
            else
              #{column}_#{I18n.default_locale}
            end
          end
        EOV
      end
    end

  end

end

ActiveRecord::Base.send :include, Translate

之后，从您的模型中调用该方法：

class Article < ActiveRecord::Base
  ...
  translate :title, :body
  ...
end

现在您可以在没有globalize3 的情况下编辑title_ru 和title_en 条目。

【讨论】：

【解决方案2】：

Globalize3 覆盖following methods，它允许您在保存属性时指定语言环境。

product.write_attribute(:title, 'Hows going', locale:'ua')
product.save!

read_attribute 也是如此。由于这是无证的，我不确定使用它是否会有任何不良后果。

【讨论】：

【解决方案3】：

可能是：RailsAdmin and Globalize3

【讨论】：