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<?php
/* For licensing terms, see /license.txt */
use Chamilo\CourseBundle\Entity\CQuizAnswer;
use ChamiloSession as Session;
/**
* Class UniqueAnswer.
*
* This class allows to instantiate an object of type UNIQUE_ANSWER
* (MULTIPLE CHOICE, UNIQUE ANSWER),
* extending the class question
*
* @author Eric Marguin
* @author Julio Montoya
*/
class UniqueAnswer extends Question
{
public $typePicture = 'mcua.png';
public $explanationLangVar = 'UniqueSelect';
/**
* Constructor.
*/
public function __construct()
{
parent::__construct();
$this->type = UNIQUE_ANSWER;
$this->isContent = $this->getIsContent();
}
/**
* {@inheritdoc}
*/
public function createAnswersForm($form)
{
// Getting the exercise list
/** @var Exercise $obj_ex */
$obj_ex = Session::read('objExercise');
$editor_config = [
'ToolbarSet' => 'TestProposedAnswer',
'Width' => '100%',
'Height' => '125',
];
//this line defines how many questions by default appear when creating a choice question
// The previous default value was 2. See task #1759.
$nb_answers = isset($_POST['nb_answers']) ? (int) $_POST['nb_answers'] : 4;
$nb_answers += (isset($_POST['lessAnswers']) ? -1 : (isset($_POST['moreAnswers']) ? 1 : 0));
$feedback_title = '';
switch ($obj_ex->getFeedbackType()) {
case EXERCISE_FEEDBACK_TYPE_DIRECT:
// Scenario
$comment_title = '<th width="20%">'.get_lang('Comment').'</th>';
$feedback_title = '<th width="20%">'.get_lang('Scenario').'</th>';
break;
case EXERCISE_FEEDBACK_TYPE_POPUP:
$comment_title = '<th width="20%">'.get_lang('Comment').'</th>';
break;
default:
$comment_title = '<th width="40%">'.get_lang('Comment').'</th>';
break;
}
$html = '<table class="table table-striped table-hover">
<thead>
<tr style="text-align: center;">
<th width="5%">'.get_lang('Number').'</th>
<th width="5%"> '.get_lang('True').'</th>
<th width="40%">'.get_lang('Answer').'</th>
'.$comment_title.'
'.$feedback_title.'
<th width="10%">'.get_lang('Weighting').'</th>
</tr>
</thead>
<tbody>';
$form->addHeader(get_lang('Answers'));
$form->addHtml($html);
$defaults = [];
$correct = 0;
if (!empty($this->iid)) {
$answer = new Answer($this->iid);
$answer->read();
if ($answer->nbrAnswers > 0 && !$form->isSubmitted()) {
$nb_answers = $answer->nbrAnswers;
}
}
$form->addElement('hidden', 'nb_answers');
$obj_ex->setQuestionList(true);
$question_list = $obj_ex->getQuestionList();
$select_question = [];
$select_question[0] = get_lang('SelectTargetQuestion');
if (is_array($question_list)) {
foreach ($question_list as $key => $questionid) {
//To avoid warning messages
if (!is_numeric($questionid)) {
continue;
}
$question = Question::read($questionid);
$questionTitle = strip_tags($question->selectTitle());
$select_question[$questionid] = "Q$key: $questionTitle";
}
}
$select_question[-1] = get_lang('ExitTest');
$list = new LearnpathList(api_get_user_id());
$flat_list = $list->get_flat_list();
$select_lp_id = [];
$select_lp_id[0] = get_lang('SelectTargetLP');
foreach ($flat_list as $id => $details) {
$select_lp_id[$id] = cut($details['lp_name'], 20);
}
$temp_scenario = [];
if ($nb_answers < 1) {
$nb_answers = 1;
echo Display::return_message(
get_lang('YouHaveToCreateAtLeastOneAnswer')
);
}
for ($i = 1; $i <= $nb_answers; $i++) {
$form->addHtml('<tr>');
if (isset($answer) && is_object($answer)) {
if (isset($answer->correct[$i]) && $answer->correct[$i]) {
$correct = $i;
}
$defaults['answer['.$i.']'] = isset($answer->answer[$i]) ? $answer->answer[$i] : '';
$defaults['comment['.$i.']'] = isset($answer->comment[$i]) ? $answer->comment[$i] : '';
$defaults['weighting['.$i.']'] = isset($answer->weighting[$i]) ? float_format($answer->weighting[$i], 1) : 0;
$item_list = [];
if (isset($answer->destination[$i])) {
$item_list = explode('@@', $answer->destination[$i]);
}
$try = isset($item_list[0]) ? $item_list[0] : '';
$lp = isset($item_list[1]) ? $item_list[1] : '';
$list_dest = isset($item_list[2]) ? $item_list[2] : '';
$url = isset($item_list[3]) ? $item_list[3] : '';
if ($try == 0) {
$try_result = 0;
} else {
$try_result = 1;
}
if ($url == 0) {
$url_result = '';
} else {
$url_result = $url;
}
$temp_scenario['url'.$i] = $url_result;
$temp_scenario['try'.$i] = $try_result;
$temp_scenario['lp'.$i] = $lp;
$temp_scenario['destination'.$i] = $list_dest;
} else {
$defaults['answer[1]'] = get_lang('DefaultUniqueAnswer1');
$defaults['weighting[1]'] = 10;
$defaults['answer[2]'] = get_lang('DefaultUniqueAnswer2');
$defaults['weighting[2]'] = 0;
$temp_scenario['destination'.$i] = ['0'];
$temp_scenario['lp'.$i] = ['0'];
}
$defaults['scenario'] = $temp_scenario;
$renderer = $form->defaultRenderer();
$renderer->setElementTemplate(
'<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>',
'correct'
);
$renderer->setElementTemplate(
'<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>',
'counter['.$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(
'radio',
'correct',
null,
null,
$i,
'class="checkbox"'
);
$form->addHtmlEditor('answer['.$i.']', null, null, false, $editor_config);
$form->addRule(
'answer['.$i.']',
get_lang('ThisFieldIsRequired'),
'required'
);
switch ($obj_ex->getFeedbackType()) {
case EXERCISE_FEEDBACK_TYPE_DIRECT:
$this->setDirectOptions($i, $form, $renderer, $select_lp_id, $select_question);
break;
case EXERCISE_FEEDBACK_TYPE_POPUP:
default:
$form->addHtmlEditor('comment['.$i.']', null, null, false, $editor_config);
break;
}
$form->addText('weighting['.$i.']', null, null, ['value' => '0']);
$form->addHtml('</tr>');
}
$form->addHtml('</tbody>');
$form->addHtml('</table>');
global $text;
$buttonGroup = [];
if (true === $obj_ex->edit_exercise_in_lp || (empty($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);
}
// We check the first radio button to be sure a radio button will be check
if ($correct == 0) {
$correct = 1;
}
if (isset($_POST) && isset($_POST['correct'])) {
$correct = (int) $_POST['correct'];
}
$defaults['correct'] = $correct;
if (!empty($this->iid)) {
$form->setDefaults($defaults);
} else {
if ($this->isContent == 1) {
// Default sample content.
$form->setDefaults($defaults);
} else {
$correct = 1;
if (isset($_POST) && isset($_POST['correct'])) {
$correct = (int) $_POST['correct'];
}
$form->setDefaults(['correct' => $correct]);
}
}
$form->setConstants(['nb_answers' => $nb_answers]);
}
public function setDirectOptions($i, FormValidator $form, $renderer, $select_lp_id, $select_question)
{
$editor_config = [
'ToolbarSet' => 'TestProposedAnswer',
'Width' => '100%',
'Height' => '125',
];
$form->addHtmlEditor(
'comment['.$i.']',
null,
null,
false,
$editor_config
);
// Direct feedback
//Adding extra feedback fields
$group = [];
$group['try'.$i] = $form->createElement(
'checkbox',
'try'.$i,
null,
get_lang('TryAgain')
);
$group['lp'.$i] = $form->createElement(
'select',
'lp'.$i,
get_lang('SeeTheory').': ',
$select_lp_id
);
$group['destination'.$i] = $form->createElement(
'select',
'destination'.$i,
get_lang('GoToQuestion').': ',
$select_question
);
$group['url'.$i] = $form->createElement(
'text',
'url'.$i,
get_lang('Other').': ',
[
'class' => 'col-md-2',
'placeholder' => get_lang('Other'),
]
);
$form->addGroup($group, 'scenario');
$renderer->setElementTemplate(
'<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}',
'scenario'
);
}
/**
* Validate question answers before saving.
*
* @return bool|string True if valid, error message if invalid.
*/
public function validateAnswers($form)
{
$correct = $form->getSubmitValue('correct');
$nb_answers = $form->getSubmitValue('nb_answers');
$hasCorrectAnswer = false;
$hasPositiveScore = false;
$errors = [];
$error_fields = [];
for ($i = 1; $i <= $nb_answers; $i++) {
$answer = trim($form->getSubmitValue("answer[$i]") ?? '');
$weighting = trim($form->getSubmitValue("weighting[$i]") ?? '');
$isCorrect = ($correct == $i);
if (empty($answer)) {
$errors[] = sprintf(get_lang('NoAnswerCanBeEmpty'), $i);
$error_fields[] = "answer[$i]";
}
if ($weighting === '' || !is_numeric($weighting)) {
$errors[] = sprintf(get_lang('ScoreMustBeNumeric'), $i);
$error_fields[] = "weighting[$i]";
}
if ($isCorrect) {
$hasCorrectAnswer = true;
if (floatval($weighting) > 0) {
$hasPositiveScore = true;
}
}
}
if (!$hasCorrectAnswer) {
$errors[] = get_lang('ACorrectAnswerIsRequired');
$error_fields[] = "correct";
}
if (!$hasPositiveScore) {
$errors[] = get_lang('TheCorrectAnswerMustHaveAPositiveScore');
}
return empty($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 = $nbrGoodAnswers = 0;
$correct = $form->getSubmitValue('correct');
$objAnswer = new Answer($this->iid);
$nb_answers = $form->getSubmitValue('nb_answers');
for ($i = 1; $i <= $nb_answers; $i++) {
$answer = trim($form->getSubmitValue('answer['.$i.']'));
$comment = trim($form->getSubmitValue('comment['.$i.']'));
$weighting = trim($form->getSubmitValue('weighting['.$i.']'));
$scenario = $form->getSubmitValue('scenario');
$try = null;
$lp = null;
$destination = null;
$url = null;
if (isset($scenario['try'.$i])) {
$try = !empty($scenario['try'.$i]);
}
if (isset($scenario['lp'.$i])) {
$lp = $scenario['lp'.$i];
}
if (isset($scenario['destination'.$i])) {
$destination = $scenario['destination'.$i];
}
if (isset($scenario['url'.$i])) {
$url = trim($scenario['url'.$i]);
}
/*
How we are going to parse the destination value
here we parse the destination value which is a string
1@@3@@2;4;4;@@http://www.chamilo.org
where: try_again@@lp_id@@selected_questions@@url
try_again = is 1 || 0
lp_id = id of a learning path (0 if dont select)
selected_questions= ids of questions
url= an url
$destination_str='';
foreach ($list_destination as $destination_id)
{
$destination_str.=$destination_id.';';
}*/
$goodAnswer = $correct == $i ? true : false;
if ($goodAnswer) {
$nbrGoodAnswers++;
$weighting = abs($weighting);
if ($weighting > 0) {
$questionWeighting += $weighting;
}
}
if (empty($try)) {
$try = 0;
}
if (empty($lp)) {
$lp = 0;
}
if (empty($destination)) {
$destination = 0;
}
if ($url == '') {
$url = 0;
}
//1@@1;2;@@2;4;4;@@http://www.chamilo.org
$dest = $try.'@@'.$lp.'@@'.$destination.'@@'.$url;
$objAnswer->createAnswer(
$answer,
$goodAnswer,
$comment,
$weighting,
$i,
null,
null,
$dest
);
}
// 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;
}
/**
* Saves one answer to the database.
*
* @param int $id The ID of the answer (has to be calculated for this course)
* @param int $question_id The question ID (to which the answer is attached)
* @param string $title The text of the answer
* @param string $comment The feedback for the answer
* @param float $score The score you get when picking this answer
* @param int $correct Whether this answer is considered *the* correct one (this is the unique answer type)
*/
public function addAnswer(
$id,
$question_id,
$title,
$comment,
$score = 0.0,
$correct = 0
) {
$em = Database::getManager();
$tbl_quiz_answer = Database::get_course_table(TABLE_QUIZ_ANSWER);
$tbl_quiz_question = Database::get_course_table(TABLE_QUIZ_QUESTION);
$course_id = api_get_course_int_id();
$question_id = (int) $question_id;
$score = floatval($score);
$correct = intval($correct);
$title = Database::escape_string($title);
$comment = Database::escape_string($comment);
// Get the max position.
$sql = "SELECT max(position) as max_position
FROM $tbl_quiz_answer
WHERE
question_id = $question_id";
$rs_max = Database::query($sql);
$row_max = Database::fetch_object($rs_max);
$position = $row_max->max_position + 1;
// Insert a new answer
$quizAnswer = new CQuizAnswer();
$quizAnswer
->setCId($course_id)
->setId($id)
->setQuestionId($question_id)
->setAnswer($title)
->setCorrect($correct)
->setComment($comment)
->setPonderation($score)
->setPosition($position)
->setDestination(CQuizAnswer::DEFAULT_DESTINATION);
$em->persist($quizAnswer);
$em->flush();
$id = $quizAnswer->getId();
if ($id) {
$quizAnswer
->setId($id);
$em->merge($quizAnswer);
$em->flush();
}
if ($correct) {
$sql = "UPDATE $tbl_quiz_question
SET ponderation = (ponderation + $score)
WHERE iid = $question_id";
Database::query($sql);
}
}
}
Zerion Mini Shell 1.0