Validation Regex is not applied to URL Custom Fields #1131

New Issue

MrUnknownDE · 2026-04-05T20:54:14+02:00

MrUnknownDE commented

2026-04-05 20:54:14 +02:00

Originally created by @ypid on 10/4/2025

NetBox Edition

NetBox Community

NetBox Version

v4.4.2

Python Version

3.10

Steps to Reproduce

Create custom field, apply it to Device Types in Object types, set name to "url", set Type to URL and Validation regex ^https://
Enter "http://sdfsdf" in the "url" field of a Device Type and press Save.

I only found this old related issue: #5558

According to the Custom Fields docs, Validation regex should work for URL which is string-based.

Expected Behavior

Save rejected with error: "Values must match this regex: ^https://" like it works for Custom Fields with "String" Type.

Observed Behavior

Device Type is saved regardless of Validation regex.

*Originally created by @ypid on 10/4/2025* ### NetBox Edition NetBox Community ### NetBox Version v4.4.2 ### Python Version 3.10 ### Steps to Reproduce 1. Create custom field, apply it to Device Types in Object types, set name to "url", set Type to URL and Validation regex `^https://` 2. Enter "http://sdfsdf" in the "url" field of a Device Type and press Save. I only found this old related issue: #5558 According to [the Custom Fields docs](https://netboxlabs.com/docs/netbox/models/extras/customfield/#validation-regex), Validation regex should work for URL which is string-based. ### Expected Behavior Save rejected with error: "Values must match this regex: ^https://" like it works for Custom Fields with "String" Type. ### Observed Behavior Device Type is saved regardless of Validation regex.

MrUnknownDE closed this issue

2026-04-05 20:54:14 +02:00

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Branches Tags

main

21455-sql-indexes-audit

21357-register-model-actions

feature

20924-plugin-ui-components

21766-improve-test-coverage-for-sortable-table-columns

21157-export-template-public-models

21025-pre-render-config-contexts

21364-swagger

feature-ip-prefix-link

20911-dropdown-3

fix_module_substitution

21160-filterset

20911-dropdown-2

20044-elevation-stuck-lightmode

7604-filter-modifiers-v3

20660-script-load

19724-graphql

14884-script

19720-macaddress-interface-generic-relation

fix-19669-api-image-download

7604-filter-modifiers

19275-fixes-interface-bulk-edit

fix-17794-get_field_value_return_list

11507-show-aggregate-and-rir-on-api

9583-add_column_specific_search_field_to_tables

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Reference: github/netbox#1131