From d36923e47ddb48e127510b825974683236094823 Mon Sep 17 00:00:00 2001
From: Jeremy Stretch <jstretch@digitalocean.com>
Date: Mon, 23 Jan 2017 15:31:41 -0500
Subject: [PATCH] Fixes #817: Update last_updated time of a circuit when
 editing a child termination

---
 netbox/circuits/__init__.py |  1 +
 netbox/circuits/apps.py     |  9 +++++++++
 netbox/circuits/signals.py  | 13 +++++++++++++
 3 files changed, 23 insertions(+)
 create mode 100644 netbox/circuits/apps.py
 create mode 100644 netbox/circuits/signals.py

diff --git a/netbox/circuits/__init__.py b/netbox/circuits/__init__.py
index e69de29bb..e5400337f 100644
--- a/netbox/circuits/__init__.py
+++ b/netbox/circuits/__init__.py
@@ -0,0 +1 @@
+default_app_config = 'circuits.apps.CircuitsConfig'
diff --git a/netbox/circuits/apps.py b/netbox/circuits/apps.py
new file mode 100644
index 000000000..bc0b7d87d
--- /dev/null
+++ b/netbox/circuits/apps.py
@@ -0,0 +1,9 @@
+from django.apps import AppConfig
+
+
+class CircuitsConfig(AppConfig):
+    name = "circuits"
+    verbose_name = "Circuits"
+
+    def ready(self):
+        import circuits.signals
diff --git a/netbox/circuits/signals.py b/netbox/circuits/signals.py
new file mode 100644
index 000000000..bdfe8c0b6
--- /dev/null
+++ b/netbox/circuits/signals.py
@@ -0,0 +1,13 @@
+from django.db.models.signals import post_delete, post_save
+from django.dispatch import receiver
+from django.utils import timezone
+
+from .models import Circuit, CircuitTermination
+
+
+@receiver((post_save, post_delete), sender=CircuitTermination)
+def update_circuit(instance, **kwargs):
+    """
+    When a CircuitTermination has been modified, update the last_updated time of its parent Circuit.
+    """
+    Circuit.objects.filter(pk=instance.circuit_id).update(last_updated=timezone.now())