def subscribe_mode(self, nick, op, mode):
nick = nick.lower()
subscriber = self.find_subscriber_with_nick(nick)
if not subscriber:
subscriber = Subscriber(nick, Subscriber.status_from_string('on'))
if op == 'add':
subscriber.add_subscription_mode(mode)
elif op == 'remove':
subscriber.remove_subscription_mode(mode)
if hasattr(subscriber, 'eid'):
self.subscriber_table.update(subscriber.to_dict(), eids=[subscriber.eid])
else:
self.subscriber_table.insert(subscriber.to_dict())
self.subscriber_table.all()
return subscriber
