Add user picker property editor (#7613)

src/Umbraco.Web/Editors/UsersController.cs

@@ -178,6 +178,33 @@ namespace Umbraco.Web.Editors
             return result;
         }
 
+        /// <summary>
+        /// Get users by integer ids
+        /// </summary>
+        /// <param name="ids"></param>
+        /// <returns></returns>
+        [OutgoingEditorModelEvent]
+        [AdminUsersAuthorize]
+        public IEnumerable<UserDisplay> GetByIds([FromJsonPath]int[] ids)
+        {
+            if (ids == null)
+            {
+                throw new HttpResponseException(HttpStatusCode.NotFound);
+            }
+
+            if (ids.Length == 0)
+                return Enumerable.Empty<UserDisplay>();
+
+            var users = Services.UserService.GetUsersById(ids);
+            if (users == null)
+            {
+                throw new HttpResponseException(HttpStatusCode.NotFound);
+            }
+
+            var result = Mapper.MapEnumerable<IUser, UserDisplay>(users);
+            return result;
+        }
+
         /// <summary>
         /// Returns a paged users collection
         /// </summary>

src/Umbraco.Web/PropertyEditors/UserPickerConfiguration.cs

@@ -7,7 +7,8 @@ namespace Umbraco.Web.PropertyEditors
     {
         public override IDictionary<string, object> DefaultConfiguration => new Dictionary<string, object>
         {
-            {"entityType", "User"}
+            { "entityType", "User" },
+            { "multiPicker", "0" }
         };
     }
-}
+}

src/Umbraco.Web/PropertyEditors/UserPickerPropertyEditor.cs

@@ -8,8 +8,8 @@ namespace Umbraco.Web.PropertyEditors
 {
     [DataEditor(
         Constants.PropertyEditors.Aliases.UserPicker,
-        "User picker",
-        "entitypicker",
+        "User Picker",
+        "userpicker",
         ValueType = ValueTypes.Integer,
         Group = Constants.PropertyEditors.Groups.People,
         Icon = Constants.Icons.User)]