From 028fa1443619dbbe5e930134d19e355884ec8c29 Mon Sep 17 00:00:00 2001
From: Andrew Nicols <andrew@nicols.co.uk>
Date: Sun, 1 Oct 2017 20:08:07 +0800
Subject: [PATCH] MDL-60058 assign: Updating gradingduedate on drag/drop

---
 mod/assign/lib.php | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/mod/assign/lib.php b/mod/assign/lib.php
index 34accd3dcc0..aa623c84c32 100644
--- a/mod/assign/lib.php
+++ b/mod/assign/lib.php
@@ -2054,6 +2054,15 @@ function mod_assign_core_calendar_event_timestart_updated(\calendar_event $event
             $instance->timemodified = time();
             $modified = true;
         }
+    } else if ($event->eventtype == ASSIGN_EVENT_TYPE_GRADINGDUE) {
+        $instance = $assign->get_instance();
+        $newduedate = $event->timestart;
+
+        if ($newduedate != $instance->gradingduedate) {
+            $instance->gradingduedate = $newduedate;
+            $instance->timemodified = time();
+            $modified = true;
+        }
     }
 
     if ($modified) {