def personflag_pre_save_to_group(sender, instance, raw, **kwargs):
"""
When a personflag is created, or has it's name changed,
update the corresponding group.
"""
if raw:
return # do not change other fields in this case.
if getattr(instance, "_sync_signal", False):
return
from django.contrib.auth.models import Group
from .models import PersonFlag
new_name = "{}".format(instance.verbose_name)
if Group.objects.filter(name=new_name).exists():
# existing group with the new name? Bail now!
return
# everything up to here is a sanity pre-check...
group = Group()
if instance.pk is not None:
# there is an old personflag, and the new group does not already exist.
old_personflag = PersonFlag.objects.get(pk=instance.pk)
try:
group = Group.objects.get(name=old_personflag.verbose_name)
except Group.DoesNotExist:
pass
group.name = new_name
group._sync_signal = True
group.save()
