From cd63fd4fe7b61ef0fa353de9f1d841b5f1df5bbe Mon Sep 17 00:00:00 2001
From: Jan-Hendrik Willms <tleilax+studip@gmail.com>
Date: Wed, 8 Jan 2025 09:18:17 +0000
Subject: [PATCH] prevent php8 warning, fixes #5103
Closes #5103
Merge request studip/studip!3816
---
lib/classes/JsonApi/Schemas/Courseware/Instance.php | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/lib/classes/JsonApi/Schemas/Courseware/Instance.php b/lib/classes/JsonApi/Schemas/Courseware/Instance.php
index 6c0e41ef0e3..c5683bc2935 100644
--- a/lib/classes/JsonApi/Schemas/Courseware/Instance.php
+++ b/lib/classes/JsonApi/Schemas/Courseware/Instance.php
@@ -21,7 +21,11 @@ class Instance extends SchemaProvider
$root = $resource->getRoot();
$unit = \Courseware\Unit::findOneBySQL('structural_element_id = ?', [$root->id]);
- return join('_', [$root->range_type, $root->range_id, $unit->id]);
+ return implode('_', [
+ $root->range_type,
+ $root->range_id,
+ $unit->id ?? '',
+ ]);
}
/**
--
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