app/models/event_order_refund_observer.rb
class EventOrderRefundObserver< ActiveRecord::Observer
def after_refund(refund, transition)
order = refund.order
order.decrement! :paid_amount_in_cents, refund.amount_in_cents
order.cancel if order.paid_amount_in_cents <= 0
OrderMailer.delay.notify_organizer_refunded(refund)
OrderMailer.delay.notify_user_refunded(refund)
end
def after_submit(refund, transition)
OrderMailer.delay.notify_support_refund(refund)
end
end