Device Module Tabs not showing

[BriacD]

After using a custom script found at: https://github.com/netbox-community/customizations/blob/master/scripts/add_device_type_components.py

I noticed that even thought the components are added, the tab does not show up.

It's only reachable via the URL: dcim/devices/12522/power-outlets/ but they do exist.
I can also connect them with cable objects, so Netbox knows they are there but the tab is missing.

I don't believe this a fault with the script but I could be wrong.

Any idea why the webpage is not rendering this element?

[candlerb]

Netbox version?

There is a problem with demo.netbox.dev that the cached counts of components on a device are not being set when the sample data is imported - and if the cached count is zero, no tab is shown. For example, https://demo.netbox.dev/dcim/devices/88/front-ports/ shows frontports but https://demo.netbox.dev/dcim/devices/88/ has no "front ports" tab.

I don't think anyone got to the bottom of this, but it's possible that custom scripts are affected by the same issue.

Try /opt/netbox/venv/bin/python /opt/netbox/netbox/manage.py calculate_cached_counts and see if that fixes the tabs. If it does, then you can raise this as a reproducible issue. I guess it's something to do with the wacky way that signals and hooks are wired up to trigger magical counter updates.

EDIT: that script calls bulk_create(), and the Django documentation says:

• The model’s save() method will not be called, and the pre_save and post_save signals will not be sent.

And it looks like post_save() is used to update the counters.

[candlerb]

Try this fix: netbox-community/customizations#101

[BriacD]

Thanks for the quick reply and breakdown of the issue.
That seems to have did the trick. I was able to update my PDUs and outlets are now showing. I will test with other components to be sure.