dynamic class and instance methods

# I want to define access levels with:
# ActionController::Base.define_access_level(:reporter,   9)

module Dougo
  module MyExtensionToClass

    def self.included(base)
      base.class_eval do
        extend ClassMethods
      end  
    end    

    module ClassMethods
      
      def define_access_level name, access_level
        # class methods 
        (class << self; self end).instance_eval do
          define_method "access_level_#{name}" do
            return access_level
          end
        end

        # instance methods 
        define_method "logged_in_as_#{name}?" do
          self.access_level == access_level
        end

        self.send :helper_method, "logged_in_as_#{name}"