%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/* For licensing terms, see /license.txt */
use ChamiloSession as Session;
/**
* Class MultipleAnswer.
*
* This class allows to instantiate an object of type MULTIPLE_ANSWER (MULTIPLE CHOICE, MULTIPLE ANSWER),
* extending the class question
*
* @author Eric Marguin
*/
class MultipleAnswer extends Question
{
public $typePicture = 'mcma.png';
public $explanationLangVar = 'MultipleSelect';
/**
* Constructor.
*/
public function __construct()
{
parent::__construct();
$this->type = MULTIPLE_ANSWER;
$this->isContent = $this->getIsContent();
}
/**
* {@inheritdoc}
*/
public function createAnswersForm($form)
{
$editorConfig = [
'ToolbarSet' => 'TestProposedAnswer',
'Width' => '100%',
'Height' => '125',
];
// The previous default value was 2. See task #1759.
$nb_answers = isset($_POST['nb_answers']) ? $_POST['nb_answers'] : 4;
$nb_answers += (isset($_POST['lessAnswers']) ? -1 : (isset($_POST['moreAnswers']) ? 1 : 0));
$obj_ex = Session::read('objExercise');
$form->addHeader(get_lang('Answers'));
$html = '<table class="table table-striped table-hover">
<thead>
<tr>
<th width="10">'.get_lang('Number').'</th>
<th width="10">'.get_lang('True').'</th>
<th width="50%">'.get_lang('Answer').'</th>
<th width="50%">'.get_lang('Comment').'</th>
<th width="10">'.get_lang('Weighting').'</th>
</tr>
</thead>
<tbody>';
$form->addHtml($html);
$defaults = [];
$correct = 0;
$answer = false;
if (!empty($this->iid)) {
$answer = new Answer($this->iid);
$answer->read();
if ($answer->nbrAnswers > 0 && !$form->isSubmitted()) {
$nb_answers = $answer->nbrAnswers;
}
}
$form->addElement('hidden', 'nb_answers');
$boxes_names = [];
if ($nb_answers < 1) {
$nb_answers = 1;
echo Display::return_message(get_lang('YouHaveToCreateAtLeastOneAnswer'));
}
for ($i = 1; $i <= $nb_answers; $i++) {
$form->addHtml('<tr>');
if (is_object($answer)) {
$defaults['answer['.$i.']'] = $answer->answer[$i];
$defaults['comment['.$i.']'] = $answer->comment[$i];
$defaults['weighting['.$i.']'] = float_format($answer->weighting[$i], 1);
$defaults['correct['.$i.']'] = $answer->correct[$i];
} else {
$defaults['answer[1]'] = get_lang('DefaultMultipleAnswer2');
$defaults['comment[1]'] = get_lang('DefaultMultipleComment2');
$defaults['correct[1]'] = true;
$defaults['weighting[1]'] = 10;
$defaults['answer[2]'] = get_lang('DefaultMultipleAnswer1');
$defaults['comment[2]'] = get_lang('DefaultMultipleComment1');
$defaults['correct[2]'] = false;
$defaults['weighting[2]'] = -5;
}
$renderer = &$form->defaultRenderer();
$renderer->setElementTemplate(
'<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>',
'correct['.$i.']'
);
$renderer->setElementTemplate(
'<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>',
'counter['.$i.']'
);
$renderer->setElementTemplate(
'<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>',
'answer['.$i.']'
);
$renderer->setElementTemplate(
'<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>',
'comment['.$i.']'
);
$renderer->setElementTemplate(
'<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>',
'weighting['.$i.']'
);
$answer_number = $form->addElement('text', 'counter['.$i.']', null, 'value="'.$i.'"');
$answer_number->freeze();
$form->addElement(
'checkbox',
'correct['.$i.']',
null,
null,
'class="checkbox" style="margin-left: 0em;"'
);
$boxes_names[] = 'correct['.$i.']';
$form->addHtmlEditor("answer[$i]", null, null, false, $editorConfig);
$form->addRule('answer['.$i.']', get_lang('ThisFieldIsRequired'), 'required');
$form->addHtmlEditor("comment[$i]", null, null, false, $editorConfig);
$form->addElement('text', 'weighting['.$i.']', null, ['style' => "width: 60px;", 'value' => '0']);
$form->addHtml('</tr>');
}
$form->addHtml('</tbody>');
$form->addHtml('</table>');
$form->add_multiple_required_rule(
$boxes_names,
get_lang('ChooseAtLeastOneCheckbox'),
'multiple_required'
);
$buttonGroup = [];
global $text;
if ($obj_ex->edit_exercise_in_lp == true ||
(empty($this->exerciseList) && empty($obj_ex->iid))
) {
// setting the save button here and not in the question class.php
$buttonGroup[] = $form->addButtonDelete(get_lang('LessAnswer'), 'lessAnswers', true);
$buttonGroup[] = $form->addButtonCreate(get_lang('PlusAnswer'), 'moreAnswers', true);
$buttonGroup[] = $form->addButton(
'submitQuestion',
$text,
'check',
'primary',
'default',
null,
['id' => 'submit-question'],
true
);
}
$form->addGroup($buttonGroup);
$defaults['correct'] = $correct;
if (!empty($this->iid)) {
$form->setDefaults($defaults);
} else {
if ($this->isContent == 1) {
$form->setDefaults($defaults);
}
}
$form->setConstants(['nb_answers' => $nb_answers]);
}
/**
* Validate question answers before saving.
*
* @param object $form The form object.
*
* @return array|bool True if valid, or an array with errors if invalid.
*/
public function validateAnswers($form)
{
$nb_answers = $form->getSubmitValue('nb_answers');
$hasCorrectAnswer = false;
$hasValidWeighting = false;
$errors = [];
$error_fields = [];
for ($i = 1; $i <= $nb_answers; $i++) {
$isCorrect = $form->getSubmitValue("correct[$i]");
$weighting = trim($form->getSubmitValue("weighting[$i]") ?? '');
if ($isCorrect) {
$hasCorrectAnswer = true;
if (is_numeric($weighting) && floatval($weighting) > 0) {
$hasValidWeighting = true;
}
}
}
if (!$hasCorrectAnswer) {
$errors[] = get_lang('AtLeastOneCorrectAnswerRequired');
$error_fields[] = "correct";
}
if ($hasCorrectAnswer && !$hasValidWeighting) {
// Only show if at least one correct answer exists but its weighting is not valid
$errors[] = get_lang('AtLeastOneCorrectAnswerMustHaveAPositiveScore');
}
return empty($errors) ? true : ['errors' => $errors, 'error_fields' => $error_fields];
}
/**
* {@inheritdoc}
*/
public function processAnswersCreation($form, $exercise)
{
$validationResult = $this->validateAnswers($form);
if ($validationResult !== true) {
Display::addFlash(Display::return_message(implode("<br>", $validationResult['errors']), 'error'));
return;
}
$questionWeighting = 0;
$objAnswer = new Answer($this->iid);
$nb_answers = $form->getSubmitValue('nb_answers');
for ($i = 1; $i <= $nb_answers; $i++) {
$answer = trim(str_replace(['<p>', '</p>'], '', $form->getSubmitValue('answer['.$i.']')));
$comment = trim(str_replace(['<p>', '</p>'], '', $form->getSubmitValue('comment['.$i.']')));
$weighting = trim($form->getSubmitValue('weighting['.$i.']'));
$goodAnswer = trim($form->getSubmitValue('correct['.$i.']'));
if ($goodAnswer) {
$weighting = abs($weighting);
} else {
$weighting = abs($weighting);
$weighting = -$weighting;
}
if ($weighting > 0) {
$questionWeighting += $weighting;
}
$objAnswer->createAnswer(
$answer,
$goodAnswer,
$comment,
$weighting,
$i
);
}
// saves the answers into the data base
$objAnswer->save();
// sets the total weighting of the question
$this->updateWeighting($questionWeighting);
$this->save($exercise);
}
/**
* {@inheritdoc}
*/
public function return_header(Exercise $exercise, $counter = null, $score = [])
{
$header = parent::return_header($exercise, $counter, $score);
$header .= '<table class="'.$this->question_table_class.'"><tr>';
$header .= '<th>'.get_lang('Choice').'</th>';
if ($exercise->showExpectedChoiceColumn()) {
$header .= '<th>'.get_lang('ExpectedChoice').'</th>';
}
$header .= '<th>'.get_lang('Answer').'</th>';
if ($exercise->showExpectedChoice()) {
$header .= '<th>'.get_lang('Status').'</th>';
}
if (false === $exercise->hideComment) {
$header .= '<th>'.get_lang('Comment').'</th>';
}
$header .= '</tr>';
return $header;
}
}
Zerion Mini Shell 1.0