ActiveResource with has_many

Hi all,

I am attempting to create a small app using ActiveResource but I am
having trouble with relationships between models. It seems that
ActiveResource doesn't support has_many relationships yet. Is there
any way to return a single xml response which can be deconstructed
into a set of related models, ie:

class Item < ActiveRecord::Base
  has_many :media_links
  has_many :media_objects, :through => :media_links
end

class Item < ActiveResource::Base
  self.site = "http://localhost:3000/"
  has_many :media_links
  has_many :media_objects, :through => :media_links
end

Using this ActiveResource model generates a 'undefined method
`has_many' for Item:Class' error.

I am using the following find query on the ActiveRecord side:

    @items = Item.find :all, :conditions => params[:conditions],
    :limit => params[:limit],
    :include => {:media_links => :media_object}

    respond_to do |wants|
      wants.xml { render :xml => (@items).to_xml(:include
=> :media_objects)}
    end