order_decorator.rb

Order.class_eval do
  attr_accessor :ship_notified
  
  # order state machine (see http://github.com/pluginaweek/state_machine/tree/master for details)
  state_machine :initial => 'cart', :use_transactions => false do

      event :next do
        transition :from => 'cart',     :to => 'address'
        transition :from => 'address',  :to => 'delivery'
        transition :from => 'delivery', :to => 'payment'
        transition :from => 'confirm',  :to => 'complete'

        # note: some payment methods will not support a confirm step
        transition :from => 'payment',  :to => 'confirm',
                                        :if => Proc.new { Gateway.current && Gateway.current.payment_profiles_supported? }

        transition :from => 'payment', :to => 'complete'
        transition :from => 'complete', :to => 'pending'
        transition :from => 'pending', :to => 'picking'
        transition :from => 'picking', :to => 'picked'
      end

      event :cancel do
        transition :to => 'canceled', :if => :allow_cancel?
      end
      
      event :return do
        transition :to => 'returned', :from => 'awaiting_return'
      end
      
      event :resume do
        transition :to => 'resumed', :from => 'canceled', :if => :allow_resume?
      end
      
      event :authorize_return do
        transition :to => 'awaiting_return'
      end
      
      event :pending do
        transition :to => 'pending', :from => ['picking', 'complete']
      end
      
      event :picking do 
        transition :to => 'picking', :from => ['pending', 'picked']
      end
      
      event :picked do 
        transition :to => 'picked', :from => ['picking']
      end

    end
end