From 61367e6417dbcac2c1daa58ef3ee96eea20e09ba Mon Sep 17 00:00:00 2001
From: moodler <moodler>
Date: Thu, 24 Apr 2003 17:13:52 +0000
Subject: [PATCH] More robust variable checking

---
 mod/quiz/lib.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/mod/quiz/lib.php b/mod/quiz/lib.php
index 5016acb12e..5c108b46aa 100644
--- a/mod/quiz/lib.php
+++ b/mod/quiz/lib.php
@@ -1367,7 +1367,11 @@ function quiz_grade_attempt_results($quiz, $questions) {
             if (!$question = get_record("quiz_questions", "id", $question->random)) {
                 error("Could not find the real question behind this random question!");
             }
-            $question->answer = $randomquestion->answer;
+            if (isset($randomquestion->answer)) {
+                $question->answer = $randomquestion->answer;
+            } else {
+                $question->answer = "";
+            }
             $question->grade = $grades[$randomquestion->id];
         } else {
             $question->grade = $grades[$question->id];
-- 
2.39.5