class OrderItemFlow(Flow):
process_class = models.OrderItemProcess
lock_impl = lock.select_for_update_lock
start = flow.StartSubprocess(this.start_func).Next(this.reserve_item)
reserve_item = flow.View(
views.OrderReservationView,
task_description="Is item reservation succeed?",
task_result_summary="Customer is {{ process.trusted|yesno:'Trusted,Unreliable' }}"
).Assign(
lambda act: act.process.parent_task.process.created_by
).Next(this.check_reservation)
check_reservation = flow.If(
cond=lambda act: act.process.item.reserved
).Then(this.pack_item).Else(this.end)
pack_item = flow.View(
UpdateProcessView,
task_description="Pack the item",
task_result_summary="Item packed"
).Assign(
lambda act: act.process.parent_task.process.created_by
).Next(this.end)
end = flow.End()
@method_decorator(flow.flow_start_func)
def start_func(self, activation, parent_task, item):
activation.prepare(parent_task)
activation.process.item = item
activation.done()
return activation
class CustomerVerificationFlow(Flow):
"""
Customer check
"""
process_class = models.CustomerVerificationProcess
lock_impl = lock.select_for_update_lock
start = flow.StartSubprocess().Next(this.verify_customer)
verify_customer = flow.View(
views.CustomerVerificationView,
task_description="Is customer trusted?",
task_result_summary="Customer considered {{ process.trusted|yesno:'Trusted,Unreliable' }}"
).Assign(
lambda act: act.process.parent_task.process.created_by
).Next(this.end)
end = flow.End()