Rendering of cable trace broken after upgrading from 3.7.6 to 3.7.7

[OliElli]

Deployment Type

Self-hosted

NetBox Version

3.7.7

Python Version

3.9

Steps to Reproduce

Load the cable trace page, eg https://netbox.example.com/dcim/interfaces/2283/trace/

Expected Behavior

An SVG of the cable trace should be visible on the top left of the page, and the download link should provide the .svg file.

Observed Behavior

No render is visible, and the download link gives an error page:

<class 'AttributeError'>

'Circuit' object has no attribute 'name'

Python version: 3.9.18
NetBox version: 3.7.7
Plugins: 
  django3_saml2_nbplugin: 2.0
  netbox_bgp: 0.12.1

[jeffgdotorg]

Thanks for reporting a problem you encountered.

I was unable to reproduce it using the provided steps. I did start with an empty, fresh 3.7.6 install, to which I added two devices, each with 24 interfaces, and connected those devices to each other and confirmed I could do a cable trace successfully. Then I upgraded that system to 3.7.7 and restarted the NetBox services. After the upgrade I was still able to perform the same trace. For good measure I tried tracing in the reverse direction, which also succeeded.

Have I omitted a step that was part of your flow?

[jeffgdotorg]

[vuchkovski]

Hi, i can confirm this Bug. We also can not trace cables on Circuits after updating from v3.7.4 to 3.7.7.
I am testing in the moment, it does work on for example Devices directly, I have seen it on a Switch(Ports), a PDUs and Power Feed....
but it does not work with Circuits!

[jeremystretch]

This was broken in PR #14750. Circuits do not have a name attribute (they are represented by circuit ID):

netbox/netbox/dcim/svg/cables.py

Line 226 in 39a8307

for i, term in enumerate(sorted(terminations, key=lambda x: x.name)):

[jeffgdotorg]

Thanks @vuchkovski, I should have keyed in on the mention of Circuit in @OliElli's original report and included one in my test setup.

[jeremystretch]

This is a good example of why it's crucial to provide explicit reproduction steps when submitting a bug report.