我正在尝试将Mongoid与rails3.2.2一起使用，我添加了:gem"mongoid","~>2.4"gem"bson_ext","~>1.5"到我的gemfile，运行:bundleinstall然后railsgmongoid:config然后编辑我的application.rb这样:#require"active_record/railtie"commentedbecauseofmongoidrequire"action_controller/railtie"require"action_mailer/railtie"require"active_resource/railt