My simple and erring dynamic method generation

my_attributes.rb

module MyAttributes
  def self.included base
    base.extend ClassMethods
    base.send :include, InstanceMethods
  end
  
  module ClassMethods
    def has_attributes attrs
      attrs.each do |attr|
        attr = attr.to_s
        generate_getter attr
        generate_setter attr
      end
    end
    
    def generate_getter attr
      class_eval do
        define_method attr do
          read_attribute attr
        end
      end
  	end

    def generate_setter attr
      class_eval do
        define_method "#{attr}=" do |value|
          write_attribute attr, value
        end
      end
    end
  end
  
  module InstanceMethods
    attr_reader :attributes
    
    def method_missing method, *args, &block
      super
    end
    
    def write_attribute(attr, value)
      @attributes ||= {}
      @attributes[attr] = value
    end
    
    def read_attribute(attr)
      @attributes[attr] if @attributes
    end
    private
  end
end


class Klass
  include MyAttributes
  has_attributes ["name", "age"]
end

k = Klass.new
k.name = "My Name"
k.name