From bdd8770347f850575b2ab73eee9fcbcb62bb3700 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luca=20B=C3=B6sch?= <luca.boesch@bfh.ch>
Date: Fri, 13 Sep 2024 11:20:48 +0200
Subject: [PATCH] MDL-83127 qtype_ordering: handle NULL in question_hints table
 entries.

---
 .../ordering/classes/question_hint_ordering.php     | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/question/type/ordering/classes/question_hint_ordering.php b/question/type/ordering/classes/question_hint_ordering.php
index f6c2fc5e430..4ae2ba81a68 100644
--- a/question/type/ordering/classes/question_hint_ordering.php
+++ b/question/type/ordering/classes/question_hint_ordering.php
@@ -54,9 +54,16 @@ class question_hint_ordering extends question_hint_with_parts {
         global $DB;
 
         // Initialize with the old questions.
-        if (is_null($row->options) || is_null($row->shownumcorrect)) {
-            $row->options = 1;
-            $row->shownumcorrect = 1;
+        if (is_null($row->options) || is_null($row->shownumcorrect) || is_null($row->clearwrong)) {
+            if (is_null($row->options)) {
+                $row->options = 1;
+            }
+            if (is_null($row->shownumcorrect)) {
+                $row->shownumcorrect = 1;
+            }
+            if (is_null($row->clearwrong)) {
+                $row->clearwrong = 1;
+            }
             $DB->update_record('question_hints', $row);
         }