fix for BIESt #1118

Merge request studip/studip!676

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/models/SimpleCollection.class.php b/lib/models/SimpleCollection.class.php
index 588de1b..26439b2 100644
--- a/lib/models/SimpleCollection.class.php
+++ b/lib/models/SimpleCollection.class.php
@@ -684,9 +684,9 @@ class SimpleCollection extends StudipArrayObject
 
         $func = function ($d1, $d2) use ($sorter, $sort_func, $sort_locale) {
             do {
-                $field = current($sorter);
-                $dir = $field[1] ?? '';
-                $field = $field[0] ?? '';
+                $current_sorter = current($sorter);
+                $field = $current_sorter[0];
+                $dir = $current_sorter[1] ?? '';
                 if (!$sort_locale) {
                     $value1 = $d1[$field];
                     $value2 = $d2[$field];