From a44abab1664828cb25693d72352fc9e002ce5426 Mon Sep 17 00:00:00 2001
From: Jan-Hendrik Willms <tleilax+studip@gmail.com>
Date: Thu, 12 Feb 2026 16:07:56 +0100
Subject: fix all dates retrieval, fixes #6254

Closes #6254

Merge request studip/studip!4727
---
 lib/models/Course.php | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/lib/models/Course.php b/lib/models/Course.php
index dbe8445..db729c6 100644
--- a/lib/models/Course.php
+++ b/lib/models/Course.php
@@ -1925,10 +1925,17 @@ class Course extends SimpleORMap implements Range, PrivacyObject, StudipItem, Fe
 
             SeminarCycleDate::findEachBySQL(
                 function ($date) use ($collection) {
-                    $collection->addCycleDate($date);
+                    $collection->addRegularDate($date);
                 },
-                "`start_time` >= :beginning AND `end_time` <= :end
-                    AND `seminar_id` = :course_id",
+                "`metadate_id` IN (
+                    SELECT `metadate_id`
+                    FROM `termine`
+                    WHERE `range_id` = :course_id
+                      AND `termine`.`date` <= :end
+                      AND `termine`.`end_time` >= :beginning
+                      AND `metadate_id` IS NOT NULL
+                      AND `metadate_id` != ''
+                 )",
                 [
                     'course_id' => $this->id,
                     'beginning' => $beginning,
-- 
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