orbit-basic/app/controllers/admin/items_controller.rb

class Admin::ItemsController < ApplicationController

  layout "admin"
  before_filter :find_parent_item
  before_filter :find_snippets, :only => :index
  
  def index
    @items = Item.all( :conditions => { :parent_id => @parent_item.id } )
    @items.unshift Item.find_by_name("root") if @parent_item.name == 'root'
  end
 
  protected
  
  def find_snippets
    @snippets = Snippet.all( :conditions => { :parent_id => @parent_item.id } )
  end
  
end