mirror of
https://github.com/netbox-community/netbox.git
synced 2024-05-10 07:54:54 +00:00
29 lines
1.0 KiB
Python
29 lines
1.0 KiB
Python
from __future__ import unicode_literals
|
|
|
|
from django.db.models.signals import post_save, pre_delete
|
|
from django.dispatch import receiver
|
|
|
|
from .models import Device, VirtualChassis
|
|
|
|
|
|
@receiver(post_save, sender=VirtualChassis)
|
|
def assign_virtualchassis_master(instance, created, **kwargs):
|
|
"""
|
|
When a VirtualChassis is created, automatically assign its master device to the VC.
|
|
"""
|
|
# Default to 1 but don't overwrite an existing position (see #2087)
|
|
if instance.master.vc_position is not None:
|
|
vc_position = instance.master.vc_position
|
|
else:
|
|
vc_position = 1
|
|
if created:
|
|
Device.objects.filter(pk=instance.master.pk).update(virtual_chassis=instance, vc_position=vc_position)
|
|
|
|
|
|
@receiver(pre_delete, sender=VirtualChassis)
|
|
def clear_virtualchassis_members(instance, **kwargs):
|
|
"""
|
|
When a VirtualChassis is deleted, nullify the vc_position and vc_priority fields of its prior members.
|
|
"""
|
|
Device.objects.filter(virtual_chassis=instance.pk).update(vc_position=None, vc_priority=None)
|