Add user group archiving functionality with HTMX support

generic/views.py

@@ -4919,6 +4919,37 @@ def user_group_view_all(request):
     )
 
 
+@user_is_cid_user_manager
+def user_group_toggle_archive(request, pk):
+    """HTMX endpoint to archive or unarchive a UserUserGroup.
+
+    POST params:
+      - archive: 'true' or 'false'
+      - view_all: optional '1' to indicate the caller is viewing the all-groups list
+
+    Returns an HTML fragment for the updated group card, or an empty
+    response when the card should be removed from the page (e.g. archiving
+    from the active-only view).
+    """
+    if request.method != "POST":
+        return HttpResponse(status=405)
+
+    group = get_object_or_404(UserUserGroup, pk=pk)
+
+    archive_val = request.POST.get("archive", "true")
+    group.archive = True if archive_val == "true" else False
+    group.save()
+
+    view_all = True if request.POST.get("view_all") == "1" else False
+
+    # If the group is now archived and the caller is not viewing archived
+    # groups, remove the card from the page by returning an empty fragment.
+    if group.archive and not view_all:
+        return HttpResponse("")
+
+    return render(request, "generic/partials/user_group_card.html", {"group": group, "view_all": view_all})
+
+
 @login_required
 def user_toggle_group(request, user_id, group_id):
     """Toggle membership of a user in either a UserUserGroup or an auth Group.