Rails遗留应用程序和Ruby 2错误:无法加载文件类型yml的翻译未知

Question

我有一个遗留的Rails应用程序,我想升级到最近的Rails和Ruby版本.首先,我试图用Ruby 2.1.2设置应用程序

$ rails -v
Rails 2.3.18

$ ruby -v
ruby 2.1.2p95 (2014-05-08 revision 45877) [i686-linux]

当我尝试运行rake任务时rake db:schema:load RAILS_ENV=test遇到错误

 can not load translations from /activesupport-2.3.18/lib/active_support/locale/en.yml, the file type yml is not known

通过Google搜索我发现以下参考https://github.com/rails/rails/issues/10514,其中提到Rails 2.3和Ruby 2+版本之间存在不兼容性.

任何人都可以帮我申请参考链接中提到的猴子补丁吗？

谢谢,Jignesh

Answer 1

最后解决了错误

 can not load translations from /activesupport-2.3.18/lib/active_support/locale/en.yml, the file type yml is not known

通过猴子修补Rails的I18n :: Backend :: Base#load_file(filename)方法.

解决方案如下:

1.1创建一个名为ruby2.rb/ config/initializers 的文件

1.2添加以下内容 /config/initializers/ruby2.rb

  if Rails::VERSION::MAJOR == 2 && RUBY_VERSION >= '2.0.0'
    module I18n
      module Backend
        module Base
          def load_file(filename)
            type = File.extname(filename).tr('.', '').downcase
            # As a fix added second argument as true to respond_to? method
            raise UnknownFileType.new(type, filename) unless respond_to?(:"load_#{type}", true)
            data = send(:"load_#{type}", filename) # TODO raise a meaningful exception if this does not yield a Hash
            data.each { |locale, d| store_translations(locale, d) }
          end
        end
      end
    end
  end

1.3终于跑了

   $ rake db:schema:load RAILS_ENV=test

并且架构已成功加载.

我能找到的最有用的参考资料,这些参考资料帮助我找到解决方案:

1. https://github.com/rails/rails/issues/10514
2. https://www.lucascaton.com.br/2014/02/28/have-a-rails-2-app-you-can-run-it-on-the-newest-ruby/