From 704d702ba2216ec5b3c32350620c77e6b31af877 Mon Sep 17 00:00:00 2001
From: Thomas Hackl <hackl@data-quest.de>
Date: Thu, 6 Jun 2024 06:20:04 +0000
Subject: [PATCH] Resolve "Veranstaltungshierarchie: Fehler beim Anlegen von
Unterelementen"
Closes #4257
Merge request studip/studip!3087
---
app/controllers/admin/tree.php | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/app/controllers/admin/tree.php b/app/controllers/admin/tree.php
index 1afc4383c74..c8f2a8f1c4a 100644
--- a/app/controllers/admin/tree.php
+++ b/app/controllers/admin/tree.php
@@ -130,12 +130,15 @@ class Admin_TreeController extends AuthenticatedController
$node->parent_id = Request::option('parent_id');
$parent = $classname::getNode(Request::option('parent_id'));
- $maxprio = max(array_map(
- function ($c) {
- return $c->priority;
- },
- $parent->getChildNodes()
- ));
+ $children = $parent->getChildNodes();
+ $maxprio = !empty($children)
+ ? max(array_map(
+ function ($c) {
+ return $c->priority;
+ },
+ $children
+ ))
+ : 0;
$node->priority = $maxprio + 1;
if (Request::option('studip_object_id')) {
--
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