user.rb

module NewSession
  class User
    @users = Hash.new {|hash, key| hash[key] = User.new}
    class << self
      def find_or_create_user name
        name = name.to_sym
        @users[name]
      end
    end

    def initialize
      @sites = {}
    end

    def register_site site
      site = site.to_sym
      class << self
        define_method site do
          puts site
        end
      end
    end
  end
end