map.resources :orders, :member => {
    :paypal_checkout => :get, :paypal_agreement => :get,
    :paypal_confirm => :get, :paypal_complete => :post,
    :check_agreement => :get, :check_complete => :get,
    :purge_all => :delete} do |order|
      order.resources :line_items
      order.resources :order_transactions
  end