Unable to assign users to topics or posts

zogstrip · October 14, 2026, 9:07am

thanks for the report @here - the issue will be fixed by

github.com/discourse/discourse

FIX: Let non-staff assigners search for assignable users (#44564)

dev/user-search-custom-url-and-user-ids ← fix/assign-search-for-non-staff

merged 09:34AM - 14 Oct 26 UTC

ZogStriP

+328 -420

Previously, the assign modal searched `/u/search/users` with the assign-allowed …groups as `groups[]`. Core rejects that with a 403 when the searching user can't see one of those groups' members, and the chooser silently showed the 403 as "No matches found". Admins were unaffected. The first search sometimes worked because it ran before the suggestions, and their groups, had loaded. This change adds an `/assign/search` endpoint. It searches the users and groups the current user can actually assign on the target, using the same `AssignmentPermissions` rules that `Assigner` enforces. The modal now uses the core `EmailGroupUserChooser` pointed at that endpoint, replacing the custom `AssignmentChooser`. The duplicated assignable-user scopes are merged into `AssignmentPermissions.assignable_user_ids`. `/assign/suggestions` now returns `groups: [{ name, full_name }]` instead of `assign_allowed_on_groups`/`assign_allowed_for_groups`. Stacked on #44563. https://meta.discourse.org/t/414310

Topic		Replies	Views
See who can be assigned to my topic Support assign	1	1014	May 20, 2020
Assign topics to non-staff users Feature assign	26	5220	July 7, 2021
Assign Posts as admin user to a moderator Bug assign	7	1247	April 28, 2020
Cannot assign topic to group Support assign	3	257	July 6, 2025
Find user's assignments (outside groups) Feature assign	4	482	June 7, 2023

Unable to assign users to topics or posts

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