fix: prevent database queries on unmanaged ClientCredentials model

Signed-off-by: Michal Fiedorowicz <mfiedorowicz@netboxlabs.com>

Author: mfiedorowicz

README.md

@@ -20,6 +20,7 @@ at [https://netboxlabs.com/blog/introducing-diode-streamlining-data-ingestion-in
 |    >= 4.2.3    |     1.1.0      |
 |    >= 4.2.3    |     1.2.0      |
 |    >= 4.4.0    |     1.4.0      |
+|    >= 4.4.0    |     1.4.1      |
 
 ## Installation
 

docker/docker-compose.yaml

@@ -1,7 +1,7 @@
 name: diode-netbox-plugin
 services:
   netbox: &netbox
-    image: netboxcommunity/netbox:v4.3.3-3.3.0-diode-netbox-plugin
+    image: netboxcommunity/netbox:v4.4.2-3.4.1-diode-netbox-plugin
     build:
       context: .
       dockerfile: Dockerfile-diode-netbox-plugin

netbox_diode_plugin/models.py

@@ -41,9 +41,19 @@ def get_absolute_url(self):
         return reverse("plugins:netbox_diode_plugin:settings")
 
 
+class UnmanagedModelManager(models.Manager):
+    """Manager for unmanaged models that prevents database queries."""
+
+    def get_queryset(self):
+        """Return an empty queryset without hitting the database."""
+        return super().get_queryset().none()
+
+
 class ClientCredentials(models.Model):
     """Dummy model to allow for permissions, saved filters, etc.."""
 
+    objects = UnmanagedModelManager()
+
     class Meta:
         """Meta class."""