Custom Object Field names can clash with internal fields

[timhall99]

Plugin Version

0.1.0

NetBox Version

4.3.1

Python Version

3.12.3

Steps to Reproduce

create custom object type "senders"
create custom object type field
Name = "id", Label = "Id"
Create custom object

Expected Behavior

When creating custom object, the field label displayed should be "Id", however the field name is going to clash with an internal database column name and should either be disallowed or modified internally to protect the database schema.

Observed Behavior

At this point, it is impossible to delete the field "id" or the custom object "senders", as we get a referential integrity error warning message.

Further investigation reveals additional table created in Postgres

custom_objects_1
custom_objects_2
custom_objects_2_senders
custom_objects_3

[mrmrcoleman]

Reproduced at:

NetBox version: v4.2.8-Docker-3.2.0
Custom Objects version: commit fe4827802c5bed230ac042bfdeba6beb328f1356 (HEAD -> main, origin/main, origin/HEAD)
Author: bctiemann <btiemann@netboxlabs.com>
Date:   Tue Jul 15 10:56:42 2025 -0400

Exception upon creating the Custom Object:

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

Local field 'id' in class 'Table14Model' clashes with field of the same name from base class 'CustomObject'.

Python version: 3.12.3
NetBox version: 4.2.8-Docker-3.2.0
Plugins: 
  netbox_custom_objects: 0.1.0