def allow_action(self, action, item_brain):
""" Return true if the given action is allowed. This is not a
wrapper for the transition guards of the event workflow. Instead
it is called *by* the transition guards.
This allows a number of people to work together on an event website
with every person having its own group of events which he or she is
responsible for.
Per default, only external events may be hidden and only internal
events archived.
A client specific packages like izug.seantis.dir.events may
use a custom adapter to override the default behaviour.
"""
result = True
try:
IExternalEvent(item_brain)
external_event = True
except:
external_event = False
if external_event:
if action not in ['hide', 'publish']:
result = False
else:
if action == 'hide':
result = False
guard = queryAdapter(self, IActionGuard)
if guard:
result = guard.allow_action(action, item_brain)
return result
def import_source(self):
try:
result = IExternalEvent(self.context).source
except:
result = ""
return result
