Sorting the changelog list by `object` causes exception

[mlvgn]

NetBox version

v3.3.9

Python version

3.10

Steps to Reproduce

1. Make one change of an object to ensure there is a list
2. Go to the changelog
3. Click the object header
4. Refresh the page

Expected Behavior

List with changes

Observed Behavior

<class 'django.core.exceptions.FieldError'>

Field 'changed_object' does not generate an automatic reverse relation and therefore cannot be used for reverse querying. If it is a GenericForeignKey, consider adding a GenericRelation.

Python version: 3.10.6
NetBox version: 3.3.9

[arthanson]

Thank you for opening a bug report. Unfortunately, the information you have provided is not sufficient for someone else to attempt to reproduce the reported behavior. Remember, each bug report must include detailed steps that someone else can follow on a clean, empty NetBox installation to reproduce the exact problem you're experiencing. These instructions should include the creation of any involved objects, any configuration changes, and complete accounting of the actions being taken. Also be sure that your report does not reference data on the public NetBox demo, as that is subject to change at any time by an outside party and cannot be relied upon for bug reports.

[mlvgn]

Hello arthanson!

Thanks for your reply. Unfortunately, I can't find what could be causing this error. I worked with NetBox as usual, adding and removing devices and changing devices. At one point, when I wanted to see the Change Log, I got this error. Before that everything worked.

[jeremystretch]

@mlvgn are you able to provide a complete stack trace? (You can enable this by temporarily setting DEBUG = True in configuration.py and restarting NetBox.)

[mlvgn]

Hello, jeremystretch!

I solved this problem:

1. Opened my user preferences
2. Moved to Table Configurations
3. Clicked the checkmark next to ObjectChangeTable (ordering: object_repr)
4. Saved

[kkthxbye-code]

I replicated what causes it and updated the steps in the post.

The object column is sortable, but it will throw an exception when trying to sort by object_repr. Maybe the object column should just not be sortable? @jeremystretch?

[jeremystretch]

Maybe the object column should just not be sortable?

That seems like the correct approach IMO.