title: Spree: how to get the current order for a user without their session?
body: <p>I'm looking for a way to get the current order for a particular user within a webhook controller so that I can apply a promotion to it. Since it's a webhook controller, I won't have access to the session for the user whose order I need, so I won't be able to use the <code>current_order</code> method within <code>Spree::Core::ControllerHelpers::Order</code> . I'm using spree 2.2. </p>