Added virtual chassis member add view

netbox/dcim/signals.py

@@ -0,0 +1,14 @@
+from __future__ import unicode_literals
+
+from django.db.models.signals import pre_delete
+from django.dispatch import receiver
+
+from .models import Device, VirtualChassis
+
+
+@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)