Filter `RackType` by Manufacturer on the Rack EditForm

[pheus]

NetBox version

v4.4.6

Feature type

Change to existing functionality

Proposed functionality

When creating or editing a Rack, allow filtering the Rack type (RackType) choices by Manufacturer, aligning with the device/module workflow.

Two possible approaches (either would work):

1. Manufacturer field + query params
   Add a Manufacturer ModelChoiceField to the Rack form and use its query_params to constrain the Rack type field to types from the selected manufacturer.

2. Selector modal on Rack type
   Add/enable the Selector modal button for the Rack type field. The modal should expose a Manufacturer filter so the user can pick a vendor first, then select a Rack type from the filtered list.

Use case

Environments often deploy multiple rack models from different manufacturers. Filtering rack types by manufacturer shortens long mixed lists, speeds data entry, prevents vendor mix-ups, and keeps the UX consistent with devices and modules.

Database changes

None.

External dependencies

None.

[pheus]

Thanks for considering this request.
I’m happy to open a PR if it’s accepted. Please let me know if you prefer (1) adding a Manufacturer filter using query_params, or (2) enabling the selector modal on the RackType field.

[jeremystretch]

Let's add the selector widget to the rack type field. Thanks @pheus!