Fixed #17627: custom fields not sorting correctly

Signed-off-by: snipe <snipe@snipe.net>

app/Http/Controllers/Api/AssetsController.php

@@ -118,10 +118,9 @@ class AssetsController extends Controller
         ];
 
         $all_custom_fields = CustomField::all(); //used as a 'cache' of custom fields throughout this page load
+
         foreach ($all_custom_fields as $field) {
-            // custom fields are prefixed with "custom_fields.".
-            // We'll add them to the allowed columns so they can be searched.
-            $allowed_columns[] = 'custom_fields.' . $field->db_column_name();
+            $allowed_columns[] = $field->db_column_name();
         }
 
         $filter = [];

app/Presenters/AssetPresenter.php

@@ -328,7 +328,7 @@ class AssetPresenter extends Presenter
         // name can break the listings page. - snipe
         foreach ($fields as $field) {
             $layout[] = [
-                'field' => 'custom_fields.'.$field->db_column,
+                'field' => $field->db_column,
                 'searchable' => true,
                 'sortable' => true,
                 'switchable' => true,