bornhack-website/src/program/signal_handlers.py
Thomas Steen Rasmussen 533c1b3efa add initial people stuff
2017-07-11 22:50:31 +02:00

29 lines
1.5 KiB
Python

from django.core.exceptions import ValidationError
def check_speaker_event_camp_consistency(sender, instance, **kwargs):
if kwargs['action'] == 'pre_add':
from program.models import Speaker, Event
if isinstance(instance, Event):
# loop over speakers being added to this event
for pk in kwargs['pk_set']:
# check if this speaker belongs to a different Camp than the event does
speaker = Speaker.objects.get(id=pk)
if speaker.camp != instance.camp:
raise ValidationError({'speakers': 'The speaker (%s) belongs to a different camp (%s) than the event does (%s)' % (speaker, speaker.camp, instance.camp)})
elif isinstance(instance, Speaker):
# loop over events being added to this speaker
for pk in kwargs['pk_set']:
# check if this event belongs to a different Camp than the speaker does
event = Event.objects.get(id=pk)
if event.camp != instance.camp:
raise ValidationError({'events': 'The event (%s) belongs to a different camp (%s) than the event does (%s)' % (event, event.camp, instance.camp)})
def check_speaker_camp_change(sender, instance, **kwargs):
if instance.pk:
for event in instance.events.all():
if event.camp != instance.camp:
raise ValidationError({'camp': 'You cannot change the camp a speaker belongs to if the speaker is associated with one or more events.'})