From: Erik Veenstra <erikveen@...>
Date: 2006-08-07T18:38:25+09:00
Subject: Re: method_missing to define_method

>  class Person
>    @attributes = {}

This is not going to work... Well, it is going to work, but it
doesn't do what you expected (I suppose)... You're referring to
the instance variable of the class, which isn't the same has
the instance variable of an instance of the class.

>    def initialize attributes
>      @attributes.merge! attributes
>    end

Because of the previous error, you're calling merge! of nil...
Why not "@attributes = attributes", as usual? You usually
initialize an object only once, anyway.

>    def method_missing name
>      if @attributes.has_key? name
>        class_eval do

         Object#.class_eval ???

>          define_method(name) do |name|

           define_method(name) do

>            @attributes[name]
>          end
>        end

         self.send(name)

>      else
>        # other magic
>      end
>    end
>  end
>
> And, consider that this example is very simple,

... but it doesn't work... ;]

gegroet,
Erik V. - http://www.erikveen.dds.nl/