Checks before removing objects

2023-03-10 20:03:21 +01:00
parent 8c61638485
commit 02980bbad5
7 changed files with 36 additions and 2 deletions
--- a/zone.php
+++ b/zone.php
@@ -83,6 +83,13 @@ switch ($submit = form_get_action()) {
        break;

    case 'delete':
+        $sth = $dbh->prepare("SELECT COUNT(*) FROM node WHERE zone_id=?");
+        $sth->execute([$id]);
+        if ($sth->fetchColumn() > 0) {
+            $g_warning->Add("Zone can not be removed. There are node-references.");
+            $action = ACT_VIEW;
+            break;
+        }
        $sth = $dbh->prepare("DELETE FROM zone WHERE zone_id=?");
        $sth->execute([$id]);
        $g_message->Add(_("Deleted zone"));