From: Johan Eriksson <johan@...>
Date: 2008-04-28T19:37:24+09:00
Subject: Re: undefined local variable

Hi --

This is what I've got now.

  the_class.class_eval <<-EOA

   def self.load_from_file(filename)
     yaml_dict = YAML::load(File.open(filename))
     object_list = yaml_dict[yaml_dict.keys[0]].map do |from_file|
       puts "from_file: #{from_file}"
       new_obj = self.class.new
       from_file.map do |obj|
         puts "obj: #{obj}"
         obj_as_list = obj.to_a
         puts "obj_as_list: #{obj_as_list}"
         if obj_as_list[1].is_a? String
             obj_as_list[1] = "'#{obj_as_list[1]}'"
           end
         str = "new_obj.#{obj_as_list[0]} = #{obj_as_list[1]}"
         eval(str)
       end
       new_obj
     end
     object_list
   end
   EOA

It gets me this:  undefined local variable or method `from_file' for 
main:Object


If I do the same thing outside of a class_eval it works fine, but I need 
to add it to a class I have just generated. Why does it not recognise 
the variable.

Any help is much appreciated!

/Johan