Gemfile 已添加 gem‘request_store' rails_app 使用自身 webrick 时 正常运行 使用 nginx +passenger 部署 提示错误： App 27555 stderr: NameError (uninitialized constant User::RequestStore): App 27555 stderr: app/models/user.rb:32:in current=' App 27555 stderr: app/controllers/application_controller.rb:31:insetup_user'

———————————————————————————————————————————————————————————————————————————————— 自我尝试过程 内容：设置 rails_env development ; 结果：上述问题未出现，个人初步判断 应该和环境参数有关（未验证到结果） 出现问题：css 加载出现问题，报错如下：

Permission denied @ utime_internal - /opt/growth_pro/tmp/cache/assets/development/sprockets/v3.0/3JbzwSomWffHrDyWaBOTzNRL9G3u81qCSFFDYQQmYs8.cache

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user model

class User < ActiveRecord::Base
   def self.current=(user)
    RequestStore.store[:current_user] = user

  end

  def self.current
    RequestStore.store[:current_user] ||= User.anonymous
  end

end
#........................................

application_controller

class ApplicationController < ActionController::Base
  before_filter :setup_user
  def setup_user
     User.current = find_current_user
  end

  def find_current_user
    user =nil
    if session[:user_id]
      user = User.find(session[:user_id])
    else
      user= User.anonymous
    end
    user
  end
end