Extending a child of active record oddness

rubyonrails-talk
1

This feels like a newbie question. But, I'm not... I promise... well I hope.

Lower in this mail I've copied in 2 related classes and a module that extends one of them. This all works fine and calling Image.help returns "youre screwed" as it should do.

However, if I take out the "include ImageExtension" out of Image and put it into the child of Image, "ChildImage" (imaginative I know) it no longer works.. Calling ChildImage.help returns method not defined. Bah.

I'm totally blaming active record here because it works fine without it. Ideas anyone?

Cheers -h

class Image < ActiveRecord::Base include ImageExtension end

class ChildImage < Image end

module ImageExtension def self.append_features(base)    super    base.extend(ClassMethods) end

module ClassMethods    def help      "youre screwed"    end end end

2

However, if I take out the "include ImageExtension" out of Image and put it into the child of Image, "ChildImage" (imaginative I know) it no longer works.. Calling ChildImage.help returns method not defined. Bah.

I'm totally blaming active record here because it works fine without it. Ideas anyone?

Just tested in 1.1.6 from script/console, works as it should.

Running on Win XP.

I split it up into two model files and image_extension in lib. What are you doing to test this?

Max