check for 0 seats in room booking, fixes #4892

Closes #4892

Merge request studip/studip!3701

1 files changed, 6 insertions, 0 deletions

diff --git a/app/controllers/course/room_requests.php b/app/controllers/course/room_requests.php
index c4fd82a..ef58f8a 100644
--- a/app/controllers/course/room_requests.php
+++ b/app/controllers/course/room_requests.php
@@ -502,6 +502,12 @@ class Course_RoomRequestsController extends AuthenticatedController
             );
         }
 
+        // no min number of seats
+        if (empty($_SESSION[$request_id]['selected_properties']['seats']) || $_SESSION[$request_id]['selected_properties']['seats'] < 1) {
+            PageLayout::postError(_('Die Mindestanzahl der Sitzplätze muss größer als 0 sein!'));
+            $this->redirect('course/room_requests/request_find_available_properties/' . $request_id . '/1/category');
+        }
+
         $this->request_id = $request_id;
         $this->step = 3;