Fixed userResource request to get all users. (#18105)

src/Umbraco.Web.BackOffice/Controllers/UsersController.cs

@@ -322,7 +322,7 @@ public class UsersController : BackOfficeNotificationsController
     /// <returns></returns>
     [OutgoingEditorModelEvent]
     [Authorize(Policy = AuthorizationPolicies.AdminUserEditsRequireAdmin)]
-    public ActionResult<IEnumerable<UserDisplay?>> GetByIds([FromJsonPath] int[] ids)
+    public ActionResult<IEnumerable<UserDisplay?>> GetByIds([FromQuery] int[] ids)
     {
         if (ids == null)
         {

src/Umbraco.Web.BackOffice/DependencyInjection/UmbracoBuilder.BackOfficeAuth.cs

@@ -202,6 +202,7 @@ public static partial class UmbracoBuilderExtensions
         {
             policy.AuthenticationSchemes.Add(backOfficeAuthenticationScheme);
             policy.Requirements.Add(new AdminUsersRequirement());
+            policy.Requirements.Add(new AdminUsersRequirement("ids"));
             policy.Requirements.Add(new AdminUsersRequirement("userIds"));
         });
 

src/Umbraco.Web.UI.Client/src/common/resources/users.resource.js

@@ -318,12 +318,14 @@
           */
         function getUsers(userIds) {
 
+            var idQuery = "";
+            userIds.forEach(id => idQuery += `ids=${id}&`);
             return umbRequestHelper.resourcePromise(
                 $http.get(
                     umbRequestHelper.getApiUrl(
                         "userApiBaseUrl",
                         "GetByIds",
-                        { ids: userIds })),
+                        idQuery)),
                 "Failed to retrieve data for users " + userIds);
         }