Fix #3853 Dead role link in Config Contexts

netbox/dcim/models.py

@@ -1382,6 +1382,9 @@ class DeviceRole(ChangeLoggedModel):
     def __str__(self):
         return self.name
 
+    def get_absolute_url(self):
+        return "{}?role={}".format(reverse('dcim:device_list'), self.slug)
+
     def to_csv(self):
         return (
             self.name,

netbox/templates/dcim/device.html

@@ -238,7 +238,7 @@
                     <tr>
                         <td>Role</td>
                         <td>
-                            <a href="{% url 'dcim:device_list' %}?role={{ device.device_role.slug }}">{{ device.device_role }}</a>
+                            <a href="{{ device.device_role.get_absolute_url }}">{{ device.device_role }}</a>
                         </td>
                     </tr>
                     <tr>