使用模块范围外部的对象

Question

我有这样的代码.

class User < ActiveRecord::Base
end

module Foo
  class User
  end
end

module Foo
  class DoesSomethingWithActiveRecordUser
    def initialize user_id
      User.find(user_id)
    end
  end
end

如果我打电话,Foo::DoesSomethingWithActiveRecordUser.new(1)我会收到一条错误信息undefined method 'find' for Foo::User.

如何从内部呼叫ActiveRecord用户Foo？

谢谢.

Answer 1

像这样:

::User.find(user_id)