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<?php
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/* For licensing terms, see /license.txt */
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use Chamilo\CoreBundle\Entity\TrackEAttempt;
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/**
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* Class QuestionOptionsEvaluationPlugin.
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*/
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class QuestionOptionsEvaluationPlugin extends Plugin
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{
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public const SETTING_ENABLE = 'enable';
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public const SETTING_MAX_SCORE = 'exercise_max_score';
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public const EXTRAFIELD_FORMULA = 'quiz_evaluation_formula';
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/**
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* QuestionValuationPlugin constructor.
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*/
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protected function __construct()
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{
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$version = '1.0';
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$author = 'Angel Fernando Quiroz Campos';
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parent::__construct(
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$version,
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$author,
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[
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self::SETTING_ENABLE => 'boolean',
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self::SETTING_MAX_SCORE => 'text',
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]
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);
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}
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/**
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* @return QuestionOptionsEvaluationPlugin|null
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*/
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public static function create()
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{
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static $result = null;
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return $result ? $result : $result = new self();
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}
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/**
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* @param int $exerciseId
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* @param int $iconSize
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*
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* @return string
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*/
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public static function filterModify($exerciseId, $iconSize = ICON_SIZE_SMALL)
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{
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$directory = basename(__DIR__);
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$title = get_plugin_lang('plugin_title', self::class);
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$enabled = api_get_plugin_setting('questionoptionsevaluation', 'enable');
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if ('true' !== $enabled) {
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return '';
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}
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return Display::url(
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Display::return_icon('options_evaluation.png', $title, [], $iconSize),
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api_get_path(WEB_PATH)."plugin/$directory/evaluation.php?exercise=$exerciseId",
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[
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'class' => 'ajax',
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'data-size' => 'md',
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'data-title' => get_plugin_lang('plugin_title', self::class),
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]
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);
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}
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public function install()
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{
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$this->createExtraField();
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}
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public function uninstall()
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{
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$this->removeExtraField();
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}
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/**
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* @return Plugin
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*/
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public function performActionsAfterConfigure()
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{
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return $this;
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}
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/**
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* @param int $formula
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*/
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public function saveFormulaForExercise($formula, Exercise $exercise)
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{
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$this->recalculateQuestionScore($formula, $exercise);
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$extraFieldValue = new ExtraFieldValue('quiz');
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$extraFieldValue->save(
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[
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'item_id' => $exercise->iid,
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'variable' => self::EXTRAFIELD_FORMULA,
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'value' => $formula,
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]
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);
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}
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/**
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* @param int $exerciseId
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*
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* @return int
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*/
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public function getFormulaForExercise($exerciseId)
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{
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$extraFieldValue = new ExtraFieldValue('quiz');
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$value = $extraFieldValue->get_values_by_handler_and_field_variable(
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$exerciseId,
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self::EXTRAFIELD_FORMULA
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);
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if (empty($value)) {
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return 0;
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}
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return (int) $value['value'];
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}
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/**
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* @return int
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*/
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public function getMaxScore()
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{
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$max = $this->get(self::SETTING_MAX_SCORE);
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if (!empty($max)) {
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return (int) $max;
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}
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return 10;
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}
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/**
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* @param int $trackId
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* @param int $formula
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*
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* @throws \Doctrine\ORM\ORMException
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* @throws \Doctrine\ORM\OptimisticLockException
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* @throws \Doctrine\ORM\TransactionRequiredException
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*
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* @return float|int
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*/
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public function getResultWithFormula($trackId, $formula)
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{
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$em = Database::getManager();
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$eTrack = $em->find('ChamiloCoreBundle:TrackEExercises', $trackId);
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$qTracks = $em
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->createQuery(
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'SELECT a FROM ChamiloCoreBundle:TrackEAttempt a
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WHERE a.exeId = :id AND a.userId = :user AND a.cId = :course AND a.sessionId = :session'
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)
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->setParameters(
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[
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'id' => $eTrack->getExeId(),
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'course' => $eTrack->getCId(),
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'session' => $eTrack->getSessionId(),
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'user' => $eTrack->getExeUserId(),
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]
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)
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->getResult();
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$counts = ['correct' => 0, 'incorrect' => 0];
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/** @var TrackEAttempt $qTrack */
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foreach ($qTracks as $qTrack) {
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if ($qTrack->getMarks() > 0) {
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$counts['correct']++;
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} elseif ($qTrack->getMarks() < 0) {
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$counts['incorrect']++;
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}
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}
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switch ($formula) {
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case 1:
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$result = $counts['correct'] - $counts['incorrect'];
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break;
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case 2:
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$result = $counts['correct'] - $counts['incorrect'] / 2;
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break;
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case 3:
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$result = $counts['correct'] - $counts['incorrect'] / 3;
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break;
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}
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$score = ($result / count($qTracks)) * $this->getMaxScore();
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return $score >= 0 ? $score : 0;
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}
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/**
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* @param int $formula
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*/
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private function recalculateQuestionScore($formula, Exercise $exercise)
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{
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$tblQuestion = Database::get_course_table(TABLE_QUIZ_QUESTION);
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$tblAnswer = Database::get_course_table(TABLE_QUIZ_ANSWER);
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foreach ($exercise->questionList as $questionId) {
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$question = Question::read($questionId, $exercise->course, false);
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if (!in_array($question->selectType(), [UNIQUE_ANSWER, MULTIPLE_ANSWER])) {
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continue;
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}
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$questionAnswers = new Answer($questionId, $exercise->course_id, $exercise);
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$counts = array_count_values($questionAnswers->correct);
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$questionPonderation = 0;
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foreach ($questionAnswers->correct as $i => $isCorrect) {
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if (!isset($questionAnswers->iid[$i])) {
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continue;
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}
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$iid = $questionAnswers->iid[$i];
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if ($question->selectType() == MULTIPLE_ANSWER || 0 === $formula) {
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$ponderation = 1 == $isCorrect ? 1 / $counts[1] : -1 / $counts[0];
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} else {
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$ponderation = 1 == $isCorrect ? 1 : -1 / $formula;
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}
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if ($ponderation > 0) {
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$questionPonderation += $ponderation;
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}
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Database::query("UPDATE $tblAnswer SET ponderation = $ponderation WHERE iid = $iid");
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}
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Database::query("UPDATE $tblQuestion SET ponderation = $questionPonderation WHERE iid = {$question->iid}");
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}
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}
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/**
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* Creates an extrafield.
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*/
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private function createExtraField()
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{
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$extraField = new ExtraField('quiz');
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if (false === $extraField->get_handler_field_info_by_field_variable(self::EXTRAFIELD_FORMULA)) {
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$extraField
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->save(
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[
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'variable' => self::EXTRAFIELD_FORMULA,
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'field_type' => ExtraField::FIELD_TYPE_TEXT,
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'display_text' => $this->get_lang('EvaluationFormula'),
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'visible_to_self' => false,
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'changeable' => false,
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]
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);
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}
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}
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/**
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* Removes the extrafield .
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*/
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private function removeExtraField()
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{
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$extraField = new ExtraField('quiz');
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$value = $extraField->get_handler_field_info_by_field_variable(self::EXTRAFIELD_FORMULA);
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if (false !== $value) {
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$extraField->delete($value['id']);
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}
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}
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}
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