[SD-1485] Refined site section validation

[vincent-gao]

Jira

https://digital-vic.atlassian.net/browse/SD-1485

Changes

Adds coupling between field_node_primary_site and field_node_site on node forms. JS handles the UI part, PHP handles backend validation only. Implemented inside the existing tide_site_restriction_field_widget.

Images

CleanShot.2026-06-02.at.15.31.21.mp4

Refactor

• [SD-1485] site section custom validation #771 Abandoning this PR because the original approach didn't fully meet the requirements. Opening a fresh PR with a revised implementation

[github-actions]

@anthony-malkoun
This PR has been open for 7 days - please review and merge ASAP.

[anthony-malkoun]

Given how this behaves, should we just hide the primary site field?

[vincent-gao]

Given how this behaves, should we just hide the primary site field?

Hi @anthony-malkoun This ticket's SD/AC doesn't cover hiding field_node_primary_site.

what do you mean by

hide the primary site field?

Are you saying hide it and presave the value?
Even if we went the "hide the field + populate it via a presave hook" route, we would still need to first define what the "primary site" actually is. Our and QA test cases also depend on a primary site being set. I think.

We might need some time to look into the feasibility.

[anthony-malkoun]

Thanks for taking me through this @vincent-gao. Approved.