django-orchestra-test/orchestra/contrib/webapps/signals.py

26 lines
929 B
Python

from django.db.models.signals import pre_save, pre_delete
from django.dispatch import receiver
from .models import WebApp
# Admin bulk deletion doesn't call model.delete()
# So, signals are used instead of model method overriding
@receiver(pre_save, sender=WebApp, dispatch_uid='webapps.type.save')
def type_save(sender, *args, **kwargs):
instance = kwargs['instance']
# Since a webapp might need to cleanup its old config files, the data
# from the OLD VERSION of the webapp is needed.
if instance.pk:
instance._old_self = type(instance).objects.get(id=instance.pk)
instance.type_instance.save()
@receiver(pre_delete, sender=WebApp, dispatch_uid='webapps.type.delete')
def type_delete(sender, *args, **kwargs):
instance = kwargs['instance']
instance._old_self = type(instance).objects.get(id=instance.pk)
try:
instance.type_instance.delete()
except KeyError:
pass