From 6973ac45c1f9735df2a86754b6cd6ae9861f39d8 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Wed, 3 Jul 2019 09:57:16 +0200
Subject: [exams] Fix creating global exam

---
 modules-available/exams/page.inc.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'modules-available/exams/page.inc.php')

diff --git a/modules-available/exams/page.inc.php b/modules-available/exams/page.inc.php
index 31593273..23a5bc39 100644
--- a/modules-available/exams/page.inc.php
+++ b/modules-available/exams/page.inc.php
@@ -287,7 +287,7 @@ class Page_Exams extends Page
 		/* process form-data */
 		$locationids = Request::post('locations', [], "ARRAY");
 
-		/* global room has id 0 */
+		/* global room is 0/NULL */
 		if (empty($locationids)) {
 			$locationids[] = 0;
 		}
@@ -296,6 +296,9 @@ class Page_Exams extends Page
 			Message::addError('main.no-permission');
 			Util::redirect('?do=exams');
 		}
+		if ($locationids[0] === 0) {
+			$locationids[0] = null;
+		}
 
 		$examid = Request::post('examid', 0, 'int');
 		$starttime = strtotime(Request::post('starttime_date') . " " . Request::post('starttime_time'));
-- 
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