feat: Implemented team member assignments endpoint

[rodmgwgu]

Description

Closes: #230

Implement the /api/authz/v1/users/<username>/assignments endpoint to get a list of role assignations for a user, to be used in the admin console.

Special case: superadmin users (Django staff or superuser) automatically have access to everything, so if we query for a superadmin user, we'll get an extra entry indicating the superadmin status.

Deadline: Verawood

How to test

Using a local dev tutor installation, call the following endpoint with required credentials:

http://local.openedx.io:8000/api/authz/v1/users/<username>/assignments

The user you use to test this should have permission to at least view one course or library.

You should see a response similar to this:

{
    "count": 6,
    "next": null,
    "previous": null,
    "results": [
        {
            "is_superadmin": false,
            "role": "course_admin",
            "org": "WGU",
            "scope": "course-v1:WGU+TC101+2026_01",
            "permission_count": 29
        },
        {
            "is_superadmin": false,
            "role": "course_staff",
            "org": "WGU",
            "scope": "course-v1:WGU+TC101+2026_01",
            "permission_count": 27
        },
        {
            "is_superadmin": true,
            "role": "django.superuser",
            "org": "*",
            "scope": "*",
            "permission_count": null
        },
        {
            "is_superadmin": false,
            "role": "library_admin",
            "org": "WGU",
            "scope": "lib:WGU:CSPROB",
            "permission_count": 11
        }
    ]
}

You can also test with params, for example:

http://local.openedx.io:8000/api/authz/v1/users/contributor/assignments?orgs=OpenedX,WGU&roles=library_contributor&sort_by=org&order=desc

Merge checklist:

Merge checklist:
Check off if complete or not applicable:

• Version bumped
• Changelog record added
• Documentation updated (not only docstrings)
• Fixup commits are squashed away
• Unit tests added/updated
• Manual testing instructions provided
• Noted any: Concerns, dependencies, migration issues, deadlines, tickets

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[Copilot]

Pull request overview

Implements a new REST endpoint to list role assignments for a specific user (including a special-case “superadmin” entry) for use in the Admin Console.

Changes:

• Added /api/authz/v1/users/<username>/assignments API view, serializers, ordering filter, and sorting utility.
• Introduced SuperAdminAssignmentData and API helpers to surface Django staff/superuser status as an assignment entry.
• Added unit tests for the new endpoint and sort_assignments, and bumped version/changelog.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
openedx_authz/rest_api/v1/views.py	Adds TeamMemberAssignmentsAPIView that aggregates superadmin + visible role assignments, then sorts/paginates.
openedx_authz/rest_api/v1/urls.py	Registers the new user assignments route.
openedx_authz/rest_api/v1/serializers.py	Adds query-param serializer + response serializer for assignment entries.
openedx_authz/rest_api/v1/filters.py	Adds ordering backend for assignments.
openedx_authz/rest_api/utils.py	Adds sort_assignments helper.
openedx_authz/rest_api/data.py	Adds AssignmentSortField enum.
openedx_authz/api/users.py	Adds APIs to fetch visible assignments for a specific user + superadmin assignment generation.
openedx_authz/api/data.py	Adds SuperAdminAssignmentData data class.
openedx_authz/tests/rest_api/test_views.py	Adds endpoint-level test suite for user assignments endpoint.
openedx_authz/tests/rest_api/test_utils.py	Adds unit tests for sort_assignments invalid parameter handling.
openedx_authz/init.py	Version bump to 1.6.0.
CHANGELOG.rst	Changelog entry for the new endpoint.

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Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated 4 comments.

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[dwong2708]

Since get_superadmin_assignments filters by is_active=True, should we apply the same filter for non-staff/non-superusers?

[rodmgwgu]

Good catch, fixed!, I also added a test for this.

[mariajgrimaldi]

LGTM after addressing Daniel's comment. Thanks a lot!

[dwong2708]

LGTM! Thanks