From 5c5950fa4405f5206232cb551cd8f321e0fdb83c Mon Sep 17 00:00:00 2001
From: David Siegfried <david.siegfried@uni-vechta.de>
Date: Fri, 27 Jun 2025 10:17:06 +0000
Subject: Batch export with unique filenames, fixes #5398

Closes #5398

Merge request studip/studip!4306
---
 app/controllers/admin/courses.php | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/app/controllers/admin/courses.php b/app/controllers/admin/courses.php
index e963342..7765a2d 100644
--- a/app/controllers/admin/courses.php
+++ b/app/controllers/admin/courses.php
@@ -1381,11 +1381,13 @@ class Admin_CoursesController extends AuthenticatedController
             _('Studiengänge'),
             _('Position'),
         ];
-        foreach ($courses as $course) {
+        foreach ($courses as $index => $course) {
             if ($GLOBALS['perm']->have_studip_perm('dozent', $course->id)) {
                 $members = $course->getMembersData();
 
-                $filename = FileManager::cleanFileName('Teilnehmendenexport ' . $course->Name . '.' . $export_format);
+                $course_name = $course->name . '-' . $course->start_semester->name . '-' . ($index + 1);
+                $filename = FileManager::cleanFileName('Teilnehmendenexport ' . $course_name . '.' . $export_format);
+
                 $filepath = $tmp_folder . '/'. $filename;
 
                 $this->render_spreadsheet($header, $members, $export_format, $filename, $filepath);
-- 
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