Prefix (flat) generates reverse error when viewing child prefixes with available prefixes

[hmsiqueiraa]

NetBox version

v.3.0.1

Python version

3.9

Steps to Reproduce

1. Click on IPAM > Prefix > Child Prefix

Expected Behavior

A option to see the child prefixes that were already created and the option to create a new child prefix.

Observed Behavior

<class 'django.urls.exceptions.NoReverseMatch'>

Reverse for 'prefix' with arguments '(None,)' not found. 1 pattern(s) tried: ['ipam/prefixes/(?P[0-9]+)/$']

Python version: 3.9.2
NetBox version: 3.0.1

[jeremystretch]

I'm not able to reproduce this.

Reverse for 'prefix' with arguments '(None,)' not found. 1 pattern(s) tried: ['ipam/prefixes/(?P[0-9]+)/$']

The pattern ipam/prefixes/(?P[0-9]+)/$ does not appear in the v3.0.1 code base. Are you using a plugin?

[991jo]

I have the same issue and it looks like it only appears if you display the "prefix flat" column in the table. This is in a netbox installation without plugins.

[991jo]

It also appears to be an issue when there are available prefixes.

[DanSheps]

Steps to reproduce:

1. Select a prefix with a child prefix
2. Go to child prefixes
3. Ensure "Prefix (flat)" is selected

This will generate the backtrace

[991jo]

@DanSheps only if there are available child prefixes. If all are allocated there is no error.

[jeremystretch]

3. Ensure "Prefix (flat)" is selected

And this is the critical piece of information needed to replicate the bug that was omitted from the original report. This is why we continually stress the need to provide comprehensive, detailed bug reports. Thanks @DanSheps!

The pattern ipam/prefixes/(?P[0-9]+)/$ does not appear in the v3.0.1 code base.

We also see that part of the error message was lost due to the absence of proper formatting. The complete path is actually 'ipam/prefixes/(?P<pk>[0-9]+)/$'.