flo/nsupdate.info
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handle deletion of a Domain

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as we reference the Domain as ForeignKey in the Host, it'll kill all Hosts that reference the deleted Domain also.

needs to be the PRE_delete signal as some of the data we need is already gone when using POST.
This commit is contained in:
Thomas Waldmann 2013-11-02 00:12:36 +01:00
parent 32d9f38837
commit 87b3711fd5
1 changed files with 9 additions and 5 deletions
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12
nsupdate/main/models.py
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@ -8,7 +8,7 @@ from django.contrib.auth.models import User
from django.core.exceptions import ValidationError
from django.core.validators import RegexValidator
from django.conf import settings
from django.db.models.signals import post_delete
from django.db.models.signals import pre_delete
from django.contrib.auth.hashers import make_password
from . import dnstools
@ -82,7 +82,7 @@ class Host(models.Model):
message='Invalid subdomain: only "a-z", "0-9" and "-" is allowed'
),
domain_blacklist_validator])
domain = models.ForeignKey(Domain)
domain = models.ForeignKey(Domain, on_delete=models.CASCADE)
update_secret = models.CharField(max_length=256) # gets hashed on save
comment = models.CharField(
max_length=256, default='', blank=True, null=True)
@ -148,8 +148,12 @@ class Host(models.Model):
return secret
def post_delete_host(sender, **kwargs):
def pre_delete_host(sender, **kwargs):
obj = kwargs['instance']
try:
dnstools.delete(obj.get_fqdn(), origin=obj.domain.domain)
except (dnstools.Timeout, dnstools.NameServerNotAvailable):
# well, we tried to clean up, but we didn't reach the nameserver
pass
post_delete.connect(post_delete_host, sender=Host)
pre_delete.connect(pre_delete_host, sender=Host)