ruby-on-rails – 在主应用程序中扩展Rails 3引擎的控制器

基于更改ActiveSupport :: Dependencies#require_or_load,有一个问题Rails engines extending functionality提出的解决方案

这是唯一/正确的方法吗？如果是的话,我该把代码放在哪里？

EDIT1：

这是Rails 2.x的代码suggested by Andrius

module ActiveSupport::Dependencies
  alias_method :require_or_load_without_multiple,:require_or_load
  def require_or_load(file_name,const_path = nil)
    if file_name.starts_with?(RAILS_ROOT + '/app')
      relative_name = file_name.gsub(RAILS_ROOT,'')
      @engine_paths ||= Rails::Initializer.new(Rails.configuration).plugin_loader.engines.collect {|plugin| plugin.directory }
      @engine_paths.each do |path|
        engine_file = File.join(path,relative_name)
        require_or_load_without_multiple(engine_file,const_path) if File.file?(engine_file)
      end
    end
    require_or_load_without_multiple(file_name,const_path)
  end
end