From 88a18df37fc17ee3bf8844302dc0df651a165a5a Mon Sep 17 00:00:00 2001
From: Simey Lameze <simey@moodle.com>
Date: Tue, 24 Jul 2018 09:28:49 +0800
Subject: [PATCH] MDL-62959 calendar: fix event data mapping for group id

---
 .../classes/local/event/mappers/create_update_form_mapper.php  | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/calendar/classes/local/event/mappers/create_update_form_mapper.php b/calendar/classes/local/event/mappers/create_update_form_mapper.php
index e4ef1e80c77..2a9b0cb9990 100644
--- a/calendar/classes/local/event/mappers/create_update_form_mapper.php
+++ b/calendar/classes/local/event/mappers/create_update_form_mapper.php
@@ -109,6 +109,9 @@ class create_update_form_mapper implements create_update_form_mapper_interface {
             } else {
                 $properties->courseid = $data->courseid;
             }
+            if (empty($properties->groupid)) {
+                $properties->groupid = 0;
+            }
         }
 
         // Decode the form fields back into valid event property.