From: jamiesensei <jamiesensei>
Date: Fri, 19 Jan 2007 07:18:26 +0000 (+0000)
Subject: fix for erroneous empty answer detection when answer is '0' which is a valid answer... 
X-Git-Url: http://git.mjollnir.org/gw?a=commitdiff_plain;h=b7d4df606ebfd8c81f8106d6561075b150fe4a1a;p=moodle.git

fix for erroneous empty answer detection when answer is '0' which is a valid answer for numeric qs.
---

diff --git a/question/type/calculated/edit_calculated_form.php b/question/type/calculated/edit_calculated_form.php
index 2bd209b10d..4cc3b4fa06 100644
--- a/question/type/calculated/edit_calculated_form.php
+++ b/question/type/calculated/edit_calculated_form.php
@@ -176,13 +176,13 @@ class question_edit_calculated_form extends question_edit_form {
         foreach ($answers as $key => $answer){
             //check no of choices
             $trimmedanswer = trim($answer);
-            if (!empty($trimmedanswer)||$answercount==0){
+            if (($trimmedanswer=='')||$answercount==0){
                 $eqerror = qtype_calculated_find_formula_errors($trimmedanswer);
                 if (FALSE !== $eqerror){
                     $errors['answers['.$key.']'] = $eqerror;
                 }
             }
-            if (!empty($trimmedanswer)){
+            if ($trimmedanswer==''){
                 if ('2' == $data['correctanswerformat'][$key]
                         && '0' == $data['correctanswerlength'][$key]) {
                     $errors['correctanswerlength['.$key.']'] = get_string('zerosignificantfiguresnotallowed','quiz');