def get_checkout_flow(event):
flow = list([step(event) for step in DEFAULT_FLOW])
for receiver, response in checkout_flow_steps.send(event):
step = response(event=event)
if step.priority > 1000:
raise ValueError('Plugins are not allowed to define a priority greater than 1000')
flow.append(step)
# Sort by priority
flow.sort(key=lambda p: p.priority)
# Create a double-linked-list for esasy forwards/backwards traversal
last = None
for step in flow:
step._previous = last
if last:
last._next = step
last = step
return flow
def get_checkout_flow(event):
flow = list([step(event) for step in DEFAULT_FLOW])
for receiver, response in checkout_flow_steps.send(event):
step = response(event=event)
if step.priority > 1000:
raise ValueError('Plugins are not allowed to define a priority greater than 1000')
flow.append(step)
# Sort by priority
flow.sort(key=lambda p: p.priority)
# Create a double-linked-list for esasy forwards/backwards traversal
last = None
for step in flow:
step._previous = last
if last:
last._next = step
last = step
return flow
