delete log action's events directly by sql to avoid memory issues, fixes #6285

Closes #6285

Merge request studip/studip!4754

1 files changed, 7 insertions, 1 deletions

diff --git a/lib/models/LogAction.php b/lib/models/LogAction.php
index 2f00420..5570c46 100644
--- a/lib/models/LogAction.php
+++ b/lib/models/LogAction.php
@@ -33,7 +33,13 @@ class LogAction extends SimpleORMap
 
         $config['has_many']['events'] = [
             'class_name' => LogEvent::class,
-            'on_delete'  => 'delete',
+            'on_delete'  => function (LogAction $action) {
+                // Direct db query to avoid memory issues
+                return DBManager::get()->execute(
+                    'DELETE FROM `log_events` WHERE `action_id` = ?',
+                    [$action->id]
+                );
+            },
         ];
 
         parent::configure($config);