Exercise: Fix result for multi_answer_false

main/exercise/exercise.class.php

@@ -3954,8 +3954,8 @@ class Exercise
                         if ($studentChoice == $answerCorrect) {
                             $questionScore += $true_score;
                         } else {
-                            if ($quiz_question_options[$studentChoice]['name'] === "Don't know" ||
-                                $quiz_question_options[$studentChoice]['name'] === "DoubtScore"
+                            if ($quiz_question_options[$studentChoice - 1]['name'] === "Don't know" ||
+                                $quiz_question_options[$studentChoice - 1]['name'] === "DoubtScore"
                             ) {
                                 $questionScore += $doubt_score;
                             } else {

main/exercise/multiple_answer_true_false.class.php

@@ -112,14 +112,15 @@ class MultipleAnswerTrueFalse extends Question
             $answer_number->freeze();
 
             if (is_object($answer)) {
-                $defaults['answer['.$i.']'] = $answer->answer[$i];
-                $defaults['comment['.$i.']'] = $answer->comment[$i];
-                $correct = $answer->correct[$i];
+                $defaults['answer['.$i.']'] = $answer->answer[$i] ?? '';
+                $defaults['comment['.$i.']'] = $answer->comment[$i] ?? '';
+                $correct = $answer->correct[$i] ?? 0;
                 $defaults['correct['.$i.']'] = $correct;
 
                 $j = 1;
                 if (!empty($optionData)) {
                     foreach ($optionData as $id => $data) {
+                        $id++;
                         $rdoCorrect = $form->addElement('radio', 'correct['.$i.']', null, null, $id);
 
                         if (isset($_POST['correct']) && isset($_POST['correct'][$i]) && $id == $_POST['correct'][$i]) {
@@ -298,7 +299,7 @@ class MultipleAnswerTrueFalse extends Question
             if (empty($options)) {
                 //If this is the first time that the question is created when
                 // change the default values from the form 1 and 2 by the correct "option id" registered
-                $goodAnswer = isset($sortedByPosition[$goodAnswer]) ? $sortedByPosition[$goodAnswer]['iid'] : '';
+                // $goodAnswer = isset($sortedByPosition[$goodAnswer]) ? $sortedByPosition[$goodAnswer]['iid'] : '';
             }
             $questionWeighting += $extra_values[0]; //By default 0 has the correct answers
             $objAnswer->createAnswer($answer, $goodAnswer, $comment, '', $i);

main/inc/lib/exercise.lib.php

@@ -754,7 +754,7 @@ class ExerciseLib
                                         Display::input(
                                             'radio',
                                             'choice['.$questionId.']['.$numAnswer.']',
-                                            $id,
+                                            $id + 1,
                                             $attributes
                                         ),
                                         ['style' => '']

main/inc/lib/exercise_show_functions.lib.php

@@ -564,8 +564,8 @@ class ExerciseShowFunctions
             $course_id = api_get_course_int_id();
             $new_options = Question::readQuestionOption($questionId, $course_id);
             // Your choice
-            if (isset($new_options[$studentChoice])) {
-                $content .= get_lang($new_options[$studentChoice]['name']);
+            if (isset($new_options[$studentChoice - 1])) {
+                $content .= get_lang($new_options[$studentChoice - 1]['name']);
             } else {
                 $content .= '-';
             }
@@ -576,8 +576,8 @@ class ExerciseShowFunctions
         if ($exercise->showExpectedChoiceColumn()) {
             if (!$hide_expected_answer) {
                 $content .= '<td width="5%">';
-                if (isset($new_options[$answerCorrect])) {
-                    $content .= get_lang($new_options[$answerCorrect]['name']);
+                if (isset($new_options[$answerCorrect - 1])) {
+                    $content .= get_lang($new_options[$answerCorrect - 1]['name']);
                 } else {
                     $content .= '-';
                 }
@@ -605,7 +605,7 @@ class ExerciseShowFunctions
             if (EXERCISE_FEEDBACK_TYPE_EXAM != $feedbackType) {
                 $content .= '<td width="20%">';
                 $color = 'black';
-                if (isset($new_options[$studentChoice]) || in_array(
+                if (isset($new_options[$studentChoice - 1]) || in_array(
                         $exercise->results_disabled,
                         [
                             RESULT_DISABLE_SHOW_ONLY_IN_CORRECT_ANSWER,