public/main/exercise/answer.class.php
<?php
/* For licensing terms, see /license.txt */
use Chamilo\CoreBundle\Framework\Container;
use Chamilo\CourseBundle\Entity\CQuizAnswer;
use Chamilo\CourseBundle\Entity\CQuizQuestion;
/**
* Class Answer
* Allows to instantiate an object of type Answer
* 5 arrays are created to receive the attributes of each answer belonging to a specified question.
*
* @author Olivier Brouckaert
*/
class Answer
{
public $questionId;
// these are arrays
public $answer;
public $correct;
public $comment;
public $weighting;
public $position;
public $hotspot_coordinates;
public $hotspot_type;
public $destination;
// these arrays are used to save temporarily new answers
// then they are moved into the arrays above or deleted in the event of cancellation
public $new_answer;
public $new_correct;
public $new_comment;
public $new_weighting;
public $new_position;
public $new_hotspot_coordinates;
public $new_hotspot_type;
public $autoId;
/** @var int Number of answers in the question */
public $nbrAnswers;
public $new_nbrAnswers;
public $new_destination; // id of the next question if feedback option is set to Directfeedback
public $course; //Course information
public $iid;
public $questionJSId;
public $standalone;
/** @var Exercise|null */
private $exercise;
/**
* @author Olivier Brouckaert
*
* @param int $questionId that answers belong to
* @param int $course_id
* @param Exercise $exercise
* @param bool $readAnswer
*/
public function __construct($questionId, $course_id = 0, $exercise = null, $readAnswer = true)
{
$this->questionId = (int) $questionId;
$this->answer = [];
$this->correct = [];
$this->comment = [];
$this->weighting = [];
$this->position = [];
$this->hotspot_coordinates = [];
$this->hotspot_type = [];
$this->destination = [];
// clears $new_* arrays
$this->cancel();
if (!empty($course_id)) {
$courseInfo = api_get_course_info_by_id($course_id);
} else {
$courseInfo = api_get_course_info();
}
$this->course = $courseInfo;
$this->course_id = $courseInfo['real_id'];
if (empty($exercise)) {
// fills arrays
$objExercise = new Exercise($this->course_id);
$exerciseId = isset($_REQUEST['exerciseId']) ? $_REQUEST['exerciseId'] : null;
$objExercise->read($exerciseId, false);
} else {
$objExercise = $exercise;
}
$this->exercise = $objExercise;
if ($readAnswer) {
if ('1' == $objExercise->random_answers && CALCULATED_ANSWER != $this->getQuestionType()) {
$this->readOrderedBy('rand()', ''); // randomize answers
} else {
$this->read(); // natural order
}
}
}
/**
* Clears $new_* arrays.
*
* @author Olivier Brouckaert
*/
public function cancel()
{
$this->new_answer = [];
$this->new_correct = [];
$this->new_comment = [];
$this->new_weighting = [];
$this->new_position = [];
$this->new_hotspot_coordinates = [];
$this->new_hotspot_type = [];
$this->new_nbrAnswers = 0;
$this->new_destination = [];
}
/**
* Reads answer information from the database.
*
* @author Olivier Brouckaert
*/
public function read()
{
$table = Database::get_course_table(TABLE_QUIZ_ANSWER);
$questionId = $this->questionId;
$sql = "SELECT * FROM $table
WHERE
question_id ='".$questionId."'
ORDER BY position";
$result = Database::query($sql);
$i = 1;
// while a record is found
while ($object = Database::fetch_object($result)) {
$this->id[$i] = $object->iid;
$this->autoId[$i] = $object->iid;
$this->iid[$i] = $object->iid;
$this->answer[$i] = $object->answer;
$this->correct[$i] = $object->correct;
$this->comment[$i] = $object->comment;
$this->weighting[$i] = $object->ponderation;
$this->position[$i] = $object->position;
$this->hotspot_coordinates[$i] = $object->hotspot_coordinates;
$this->hotspot_type[$i] = $object->hotspot_type;
$this->destination[$i] = $object->destination;
$i++;
}
$this->nbrAnswers = $i - 1;
}
/**
* @param int $id
*
* @return array
*/
public function getAnswerByAutoId($id)
{
foreach ($this->autoId as $key => $autoId) {
if ($autoId == $id) {
return [
'answer' => $this->answer[$key],
'correct' => $this->correct[$key],
'comment' => $this->comment[$key],
];
}
}
return [];
}
/**
* returns all answer ids from this question Id.
*
* @author Yoselyn Castillo
*
* @return array - $id (answer ids)
*/
public function selectAnswerId()
{
$table = Database::get_course_table(TABLE_QUIZ_ANSWER);
$questionId = $this->questionId;
$sql = "SELECT id FROM
$table
WHERE c_id = {$this->course_id} AND question_id ='".$questionId."'";
$result = Database::query($sql);
$id = [];
// while a record is found
if (Database::num_rows($result) > 0) {
while ($object = Database::fetch_array($result)) {
$id[] = $object['id'];
}
}
return $id;
}
/**
* Reads answer information from the data base ordered by parameter.
*
* @param string $field Field we want to order by
* @param string $order DESC or ASC
*
* @return bool
*
* @author Frederic Vauthier
*/
public function readOrderedBy($field, $order = 'ASC')
{
$field = Database::escape_string($field);
if (empty($field)) {
$field = 'position';
}
if ('ASC' != $order && 'DESC' != $order) {
$order = 'ASC';
}
$TBL_ANSWER = Database::get_course_table(TABLE_QUIZ_ANSWER);
$TBL_QUIZ = Database::get_course_table(TABLE_QUIZ_QUESTION);
$questionId = (int) $this->questionId;
$sql = "SELECT type FROM $TBL_QUIZ
WHERE iid = $questionId";
$result_question = Database::query($sql);
$questionType = Database::fetch_array($result_question);
if (DRAGGABLE == $questionType['type']) {
// Random is done by submit.js.tpl
$this->read();
return true;
}
$sql = "SELECT
answer,
correct,
comment,
ponderation,
position,
hotspot_coordinates,
hotspot_type,
destination,
iid
FROM $TBL_ANSWER
WHERE
question_id='".$questionId."'
ORDER BY $field $order";
$result = Database::query($sql);
$i = 1;
// while a record is found
$doubt_data = null;
while ($object = Database::fetch_object($result)) {
if (UNIQUE_ANSWER_NO_OPTION == $questionType['type'] && 666 == $object->position) {
$doubt_data = $object;
continue;
}
$this->answer[$i] = $object->answer;
$this->correct[$i] = $object->correct;
$this->comment[$i] = $object->comment;
$this->weighting[$i] = $object->ponderation;
$this->position[$i] = $object->position;
$this->hotspot_coordinates[$i] = $object->hotspot_coordinates;
$this->hotspot_type[$i] = $object->hotspot_type;
$this->destination[$i] = $object->destination;
$this->autoId[$i] = $object->iid;
$this->iid[$i] = $object->iid;
$i++;
}
if (UNIQUE_ANSWER_NO_OPTION == $questionType['type'] && !empty($doubt_data)) {
$this->answer[$i] = $doubt_data->answer;
$this->correct[$i] = $doubt_data->correct;
$this->comment[$i] = $doubt_data->comment;
$this->weighting[$i] = $doubt_data->ponderation;
$this->position[$i] = $doubt_data->position;
$this->hotspot_coordinates[$i] = isset($object->hotspot_coordinates) ? $object->hotspot_coordinates : 0;
$this->hotspot_type[$i] = isset($object->hotspot_type) ? $object->hotspot_type : 0;
$this->destination[$i] = $doubt_data->destination;
$this->autoId[$i] = $doubt_data->iid;
$this->iid[$i] = $doubt_data->iid;
$i++;
}
$this->nbrAnswers = $i - 1;
return true;
}
/**
* returns the autoincrement id.
*
* @author Juan Carlos Ra�a
*
* @return int - answer num
*/
public function selectAutoId($id)
{
return isset($this->iid[$id]) ? (int) $this->iid[$id] : 0;
}
/**
* returns the number of answers in this question.
*
* @author Olivier Brouckaert
*
* @return int - number of answers
*/
public function selectNbrAnswers()
{
return $this->nbrAnswers;
}
/**
* returns the question ID which the answers belong to.
*
* @author Olivier Brouckaert
*
* @return int - the question ID
*/
public function selectQuestionId()
{
return $this->questionId;
}
/**
* returns the question ID of the destination question.
*
* @author Julio Montoya
*
* @param int $id
*
* @return int - the question ID
*/
public function selectDestination($id)
{
return isset($this->destination[$id]) ? $this->destination[$id] : null;
}
/**
* returns the answer title.
*
* @author Olivier Brouckaert
*
* @param - integer $id - answer ID
*
* @return string - answer title
*/
public function selectAnswer($id)
{
return isset($this->answer[$id]) ? $this->answer[$id] : null;
}
/**
* return array answer by id else return a bool.
*
* @param int $auto_id
*
* @return array
*/
public function selectAnswerByAutoId($auto_id)
{
$table = Database::get_course_table(TABLE_QUIZ_ANSWER);
$auto_id = (int) $auto_id;
$sql = "SELECT iid, answer FROM $table
WHERE iid='$auto_id'";
$rs = Database::query($sql);
if (Database::num_rows($rs) > 0) {
return Database::fetch_assoc($rs);
}
return false;
}
/**
* returns the answer title from an answer's position.
*
* @author Yannick Warnier
*
* @param - integer $pos - answer ID
*
* @return bool - answer title
*/
public function selectAnswerIdByPosition($pos)
{
foreach ($this->position as $k => $v) {
if ($v != $pos) {
continue;
}
return $k;
}
return false;
}
/**
* Returns a list of answers.
*
* @author Yannick Warnier <ywarnier@beeznest.org>
*
* @param bool $decode
*
* @return array List of answers where each answer is an array
* of (id, answer, comment, grade) and grade=weighting
*/
public function getAnswersList($decode = false)
{
$list = [];
for ($i = 1; $i <= $this->nbrAnswers; $i++) {
if (!empty($this->answer[$i])) {
//Avoid problems when parsing elements with accents
if ($decode) {
$this->answer[$i] = api_html_entity_decode(
$this->answer[$i],
ENT_QUOTES,
api_get_system_encoding()
);
$this->comment[$i] = api_html_entity_decode(
$this->comment[$i],
ENT_QUOTES,
api_get_system_encoding()
);
}
$list[] = [
'id' => $i,
'answer' => $this->answer[$i],
'comment' => $this->comment[$i],
'grade' => $this->weighting[$i],
'hotspot_coord' => $this->hotspot_coordinates[$i],
'hotspot_type' => $this->hotspot_type[$i],
'correct' => $this->correct[$i],
'destination' => $this->destination[$i],
];
}
}
return $list;
}
/**
* Returns a list of grades.
*
* @author Yannick Warnier <ywarnier@beeznest.org>
*
* @return array List of grades where grade=weighting (?)
*/
public function getGradesList()
{
$list = [];
for ($i = 0; $i < $this->nbrAnswers; $i++) {
if (!empty($this->answer[$i])) {
$list[$i] = $this->weighting[$i];
}
}
return $list;
}
/**
* Returns the question type.
*
* @author Yannick Warnier <ywarnier@beeznest.org>
*
* @todo remove this function use CQuizQuestion
*
* @return int The type of the question this answer is bound to
*/
public function getQuestionType()
{
$table = Database::get_course_table(TABLE_QUIZ_QUESTION);
$sql = "SELECT type FROM $table
WHERE iid = '".$this->questionId."'";
$res = Database::query($sql);
if (Database::num_rows($res) <= 0) {
return null;
}
$row = Database::fetch_array($res);
return (int) $row['type'];
}
/**
* tells if answer is correct or not.
*
* @author Olivier Brouckaert
*
* @param - integer $id - answer ID
*
* @return int - 0 if bad answer, not 0 if good answer
*/
public function isCorrect($id)
{
return isset($this->correct[$id]) ? $this->correct[$id] : null;
}
/**
* returns answer comment.
*
* @author Olivier Brouckaert
*
* @param - integer $id - answer ID
*
* @return string - answer comment
*/
public function selectComment($id)
{
return isset($this->comment[$id]) ? $this->comment[$id] : null;
}
/**
* returns answer weighting.
*
* @author Olivier Brouckaert
*
* @param - integer $id - answer ID
*
* @return int - answer weighting
*/
public function selectWeighting($id)
{
return isset($this->weighting[$id]) ? $this->weighting[$id] : null;
}
/**
* returns answer position.
*
* @author Olivier Brouckaert
*
* @param - integer $id - answer ID
*
* @return int - answer position
*/
public function selectPosition($id)
{
return isset($this->position[$id]) ? $this->position[$id] : null;
}
/**
* returns answer hotspot coordinates.
*
* @author Olivier Brouckaert
*
* @param int $id Answer ID
*
* @return int Answer position
*/
public function selectHotspotCoordinates($id)
{
return isset($this->hotspot_coordinates[$id]) ? $this->hotspot_coordinates[$id] : null;
}
/**
* returns answer hotspot type.
*
* @author Toon Keppens
*
* @param int $id Answer ID
*
* @return int Answer position
*/
public function selectHotspotType($id)
{
return isset($this->hotspot_type[$id]) ? $this->hotspot_type[$id] : null;
}
/**
* Creates a new answer.
*
* @author Olivier Brouckaert
*
* @param string $answer answer title
* @param int $correct 0 if bad answer, not 0 if good answer
* @param string $comment answer comment
* @param int $weighting answer weighting
* @param int $position answer position
* @param array $new_hotspot_coordinates Coordinates for hotspot exercises (optional)
* @param int $new_hotspot_type Type for hotspot exercises (optional)
* @param string $destination
*/
public function createAnswer(
$answer,
$correct,
$comment,
$weighting,
$position,
$new_hotspot_coordinates = null,
$new_hotspot_type = null,
$destination = ''
) {
$this->new_nbrAnswers++;
$id = $this->new_nbrAnswers;
$this->new_answer[$id] = $answer;
$this->new_correct[$id] = $correct;
$this->new_comment[$id] = $comment;
$this->new_weighting[$id] = $weighting;
$this->new_position[$id] = $position;
$this->new_hotspot_coordinates[$id] = $new_hotspot_coordinates;
$this->new_hotspot_type[$id] = $new_hotspot_type;
$this->new_destination[$id] = $destination;
}
/**
* Updates an answer.
*
* @author Toon Keppens
*
* @param int $iid
* @param string $answer
* @param string $comment
* @param string $correct
* @param string $weighting
* @param string $position
* @param string $destination
* @param string $hotSpotCoordinates
* @param string $hotSpotType
*
* @return CQuizAnswer
*/
public function updateAnswers(
$iid,
$answer,
$comment,
$correct,
$weighting,
$position,
$destination,
$hotSpotCoordinates,
$hotSpotType
) {
$em = Database::getManager();
/** @var CQuizAnswer $quizAnswer */
$quizAnswer = $em->find(CQuizAnswer::class, $iid);
if ($quizAnswer) {
$quizAnswer
->setAnswer((string) $answer)
->setComment((string) $comment)
->setCorrect((int) $correct)
->setPonderation($weighting)
->setPosition($position)
->setDestination($destination)
->setHotspotCoordinates($hotSpotCoordinates)
->setHotspotType($hotSpotType)
;
$em->persist($quizAnswer);
$em->flush();
return $quizAnswer;
}
return false;
}
/**
* Records answers into the data base.
*
* @author Olivier Brouckaert
*/
public function save()
{
$answerTable = Database::get_course_table(TABLE_QUIZ_ANSWER);
$em = Database::getManager();
$questionId = (int) $this->questionId;
$courseId = $this->course['real_id'];
$answerList = [];
$questionRepo = Container::getQuestionRepository();
/** @var CQuizQuestion $question */
$question = $questionRepo->find($questionId);
$questionType = $question->getType();
for ($i = 1; $i <= $this->new_nbrAnswers; $i++) {
$answer = (string) $this->new_answer[$i];
$correct = isset($this->new_correct[$i]) ? (int) $this->new_correct[$i] : null;
$comment = isset($this->new_comment[$i]) ? $this->new_comment[$i] : null;
$weighting = isset($this->new_weighting[$i]) ? (float) $this->new_weighting[$i] : null;
$position = isset($this->new_position[$i]) ? $this->new_position[$i] : null;
$hotspot_coordinates = isset($this->new_hotspot_coordinates[$i]) ? $this->new_hotspot_coordinates[$i] : null;
$hotspot_type = isset($this->new_hotspot_type[$i]) ? $this->new_hotspot_type[$i] : null;
$destination = isset($this->new_destination[$i]) ? $this->new_destination[$i] : null;
//$autoId = $this->selectAutoId($i);
$iid = isset($this->iid[$i]) ? $this->iid[$i] : 0;
if (!isset($this->position[$i])) {
$quizAnswer = new CQuizAnswer();
$quizAnswer
->setQuestion($question)
->setAnswer($answer)
->setCorrect($correct)
->setComment($comment)
->setPonderation(!is_null($weighting) ? $weighting : 0.0)
->setPosition($position)
->setHotspotCoordinates($hotspot_coordinates)
->setHotspotType($hotspot_type)
->setDestination($destination);
$em->persist($quizAnswer);
$em->flush();
$iid = $quizAnswer->getIid();
if ($iid) {
if (in_array($questionType, [MATCHING, MATCHING_DRAGGABLE])) {
$answer = new self($this->questionId, $courseId, $this->exercise, false);
$answer->read();
$correctAnswerId = $answer->selectAnswerIdByPosition($correct);
// Continue to avoid matching question bug if $correctAnswerId returns false
// See : https://support.chamilo.org/issues/8334
if (MATCHING == $questionType && !$correctAnswerId) {
continue;
}
$correctAnswerAutoId = $answer->selectAutoId($correct);
$quizAnswer->setCorrect($correctAnswerAutoId ?: 0);
}
$em->persist($quizAnswer);
$em->flush();
}
} else {
// https://support.chamilo.org/issues/6558
// function updateAnswers already escape_string, error if we do it twice.
// Feed function updateAnswers with none escaped strings
$this->updateAnswers(
$iid,
$this->new_answer[$i],
$this->new_comment[$i],
$this->new_correct[$i],
$this->new_weighting[$i],
$this->new_position[$i],
$this->new_destination[$i],
$this->new_hotspot_coordinates[$i],
$this->new_hotspot_type[$i]
);
}
$answerList[$i] = $iid;
}
switch ($questionType) {
case MATCHING_DRAGGABLE:
foreach ($this->new_correct as $value => $status) {
if (!empty($status)) {
if (isset($answerList[$status])) {
$correct = $answerList[$status];
} else {
$correct = $status;
}
$myAutoId = $answerList[$value];
$sql = "UPDATE $answerTable
SET correct = '$correct'
WHERE
iid = $myAutoId
";
Database::query($sql);
}
}
break;
case DRAGGABLE:
foreach ($this->new_correct as $value => $status) {
if (!empty($status)) {
$correct = $answerList[$status];
$myAutoId = $answerList[$value];
$sql = "UPDATE $answerTable
SET correct = '$correct'
WHERE
iid = $myAutoId
";
Database::query($sql);
}
}
break;
}
if (count($this->position) > $this->new_nbrAnswers) {
$i = $this->new_nbrAnswers + 1;
while (isset($this->position[$i])) {
$position = $this->position[$i];
$sql = "DELETE FROM $answerTable
WHERE
question_id = '".$questionId."' AND
position ='$position'";
Database::query($sql);
$i++;
}
}
// moves $new_* arrays
$this->answer = $this->new_answer;
$this->correct = $this->new_correct;
$this->comment = $this->new_comment;
$this->weighting = $this->new_weighting;
$this->position = $this->new_position;
$this->hotspot_coordinates = $this->new_hotspot_coordinates;
$this->hotspot_type = $this->new_hotspot_type;
$this->nbrAnswers = $this->new_nbrAnswers;
$this->destination = $this->new_destination;
$this->cancel();
}
/**
* Duplicates answers by copying them into another question.
*
* @author Olivier Brouckaert
*
* @param null $courseInfo destination course info (result of the function api_get_course_info() )
*
* @throws \Doctrine\ORM\ORMException
* @throws \Doctrine\ORM\OptimisticLockException
*/
public function duplicate(Question $newQuestion, $courseInfo = null)
{
$newQuestionId = $newQuestion->id;
$em = Database::getManager();
$questionRepo = Container::getQuestionRepository();
$answerRepo = $em->getRepository(CQuizAnswer::class);
$question = $questionRepo->find($newQuestionId);
if (empty($courseInfo)) {
$courseInfo = $this->course;
}
$fixedList = [];
if (MULTIPLE_ANSWER_TRUE_FALSE === self::getQuestionType() ||
MULTIPLE_ANSWER_TRUE_FALSE_DEGREE_CERTAINTY === self::getQuestionType()
) {
// Selecting origin options
$originOptions = Question::readQuestionOption($this->selectQuestionId());
if (!empty($originOptions)) {
foreach ($originOptions as $item) {
$newOptionList[] = $item['iid'];
}
}
$destinationOptions = Question::readQuestionOption($newQuestionId);
$i = 0;
if (!empty($destinationOptions)) {
foreach ($destinationOptions as $item) {
$fixedList[$newOptionList[$i]] = $item['iid'];
$i++;
}
}
}
// if at least one answer
if (empty($this->nbrAnswers)) {
return;
}
// inserts new answers into data base
$correctAnswers = [];
$onlyAnswers = [];
$allAnswers = [];
if (in_array($newQuestion->type, [MATCHING, MATCHING_DRAGGABLE])) {
$temp = [];
for ($i = 1; $i <= $this->nbrAnswers; $i++) {
$answer = [
'id' => $this->id[$i],
'answer' => $this->answer[$i],
'correct' => $this->correct[$i],
'comment' => $this->comment[$i],
'weighting' => $this->weighting[$i],
'ponderation' => $this->weighting[$i],
'position' => $this->position[$i],
'hotspot_coordinates' => $this->hotspot_coordinates[$i],
'hotspot_type' => $this->hotspot_type[$i],
'destination' => $this->destination[$i],
];
$temp[$answer['position']] = $answer;
$allAnswers[$this->id[$i]] = $this->answer[$i];
}
foreach ($temp as $answer) {
if ($this->course['id'] != $courseInfo['id']) {
// check resources inside html from ckeditor tool and copy correct urls into recipient course
$answer['answer'] = DocumentManager::replaceUrlWithNewCourseCode(
$answer['answer'],
$this->course['id'],
$courseInfo['id']
);
$answer['comment'] = DocumentManager::replaceUrlWithNewCourseCode(
$answer['comment'],
$this->course['id'],
$courseInfo['id']
);
}
$quizAnswer = new CQuizAnswer();
$quizAnswer
->setQuestion($question)
->setAnswer($answer['answer'])
->setCorrect($answer['correct'])
->setComment($answer['comment'])
->setPonderation($answer['ponderation'])
->setPosition($answer['position'])
->setHotspotCoordinates($answer['hotspot_coordinates'])
->setHotspotType($answer['hotspot_type'])
;
$em->persist($quizAnswer);
$em->flush();
$answerId = $quizAnswer->getIid();
if ($answerId) {
$em->persist($quizAnswer);
$em->flush();
$correctAnswers[$answerId] = $answer['correct'];
$onlyAnswers[$answerId] = $answer['answer'];
}
}
} else {
for ($i = 1; $i <= $this->nbrAnswers; $i++) {
if ($this->course['id'] != $courseInfo['id']) {
$this->answer[$i] = DocumentManager::replaceUrlWithNewCourseCode(
$this->answer[$i],
$this->course['id'],
$courseInfo['id']
);
$this->comment[$i] = DocumentManager::replaceUrlWithNewCourseCode(
$this->comment[$i],
$this->course['id'],
$courseInfo['id']
);
}
$correct = $this->correct[$i];
if (MULTIPLE_ANSWER_TRUE_FALSE == $newQuestion->type ||
MULTIPLE_ANSWER_TRUE_FALSE_DEGREE_CERTAINTY == $newQuestion->type
) {
$correct = $fixedList[(int) $correct];
}
$quizAnswer = new CQuizAnswer();
$quizAnswer
->setQuestion($question)
->setAnswer($this->answer[$i])
->setCorrect($correct)
->setComment($this->comment[$i])
->setPonderation($this->weighting[$i])
->setPosition($this->position[$i])
->setHotspotCoordinates($this->hotspot_coordinates[$i])
->setHotspotType($this->hotspot_type[$i])
->setDestination($this->destination[$i]);
$em->persist($quizAnswer);
$em->flush();
$answerId = $quizAnswer->getIid();
$correctAnswers[$answerId] = $correct;
$onlyAnswers[$answerId] = $this->answer[$i];
$allAnswers[$this->id[$i]] = $this->answer[$i];
}
}
// Fix correct answers
if (in_array($newQuestion->type, [DRAGGABLE, MATCHING, MATCHING_DRAGGABLE])) {
$onlyAnswersFlip = array_flip($onlyAnswers);
foreach ($correctAnswers as $answerIdItem => $correctAnswer) {
if (!isset($allAnswers[$correctAnswer]) || !isset($onlyAnswersFlip[$allAnswers[$correctAnswer]])) {
continue;
}
$answer = $answerRepo->find($answerIdItem);
$answer->setCorrect((int) $onlyAnswersFlip[$allAnswers[$correctAnswer]]);
$em->persist($answer);
$em->flush();
}
}
}
/**
* Get the necessary JavaScript for some answers.
*
* @return string
*/
public function getJs()
{
return "<script>
$(window).on('load', function() {
jsPlumb.ready(function() {
if ($('#drag{$this->questionId}_question').length > 0) {
setTimeout(function() {
// Initialize MatchingDraggable
MatchingDraggable.init('{$this->questionId}');
}, 1000);
}
});
});
</script>";
}
/**
* Check if a answer is correct by an answer auto id.
*
* @param int $needle The answer auto id
*
* @return bool
*/
public function isCorrectByAutoId($needle)
{
$key = 0;
if (is_array($this->autoId)) {
foreach ($this->autoId as $autoIdKey => $autoId) {
if ($autoId == $needle) {
$key = $autoIdKey;
}
}
}
if (!$key) {
return false;
}
return $this->isCorrect($key) ? true : false;
}
}