MDL-67027 calendar: fix event update form validation.

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 032d839..e4ef1e8 100644 (file)
--- a/calendar/classes/local/event/mappers/create_update_form_mapper.php
+++ b/calendar/classes/local/event/mappers/create_update_form_mapper.php
@@ -70,11 +70,13 @@ class create_update_form_mapper implements create_update_form_mapper_interface {
             'format' => $data->format
         ];
 
-        // We don't want to return the context because it's not a
-        // form value and breaks the validation.
+        // Don't return context or subscription because they're not form values and break validation.
         if (isset($data->context)) {
             unset($data->context);
         }
+        if (isset($data->subscription)) {
+            unset($data->subscription);
+        }
 
         return $data;
     }