Exception for job list if object not set

[alehaa]

Deployment Type

Self-hosted

NetBox Version

v4.1.3

Python Version

3.11

Steps to Reproduce

1. Create a new JobRunner.
2. Schedule the job runner without an instance being passed to enqueue_once().
3. Navigate to jobs list view

Expected Behavior

List is shown

Observed Behavior

AttributeError at /core/jobs/

'NoneType' object has no attribute 'model'

This seems to be similar to #17086, but I don't know why it wasn't observed in previous versions.

As this blocks implementation of #16971 or at least makes the changes impractical to use, I'd like to check on this issue first (and volunteer for a PR).

[alehaa]

In core.Job, object_type is optional. However, its get_absolute_url() method assumes it not to be None. Required changes:

diff --git a/netbox/core/models/jobs.py b/netbox/core/models/jobs.py
index 4a327a1d8..499822468 100644
--- a/netbox/core/models/jobs.py
+++ b/netbox/core/models/jobs.py
@@ -118,9 +118,9 @@ class Job(models.Model):
 
     def get_absolute_url(self):
         # TODO: Employ dynamic registration
-        if self.object_type.model == 'reportmodule':
+        if self.object_type and self.object_type.model == 'reportmodule':
             return reverse(f'extras:report_result', kwargs={'job_pk': self.pk})
-        if self.object_type.model == 'scriptmodule':
+        if self.object_type and self.object_type.model == 'scriptmodule':
             return reverse(f'extras:script_result', kwargs={'job_pk': self.pk})
         return reverse('core:job', args=[self.pk])

[alehaa]

I believe this is a duplicate of #17566. Sorry.