lot of bug fixes
* @author hubert.borderiou@grenet.fr - add question categories
* @package chamilo.exercise
*/
abstract class Question
{
public $id;
public $question;
public $description;
public $weighting;
public $position;
public $type;
public $level;
public $picture;
public $exerciseList; // array with the list of exercises which this question is in
public $category_list;
public $parent_id;
public $category;
public $isContent;
public $course;
public $feedback;
public static $typePicture = 'new_question.png';
public static $explanationLangVar = '';
public $question_table_class = 'table table-striped';
public $questionTypeWithFeedback;
public $extra;
public $export = false;
public static $questionTypes = array(
UNIQUE_ANSWER => array('unique_answer.class.php', 'UniqueAnswer'),
MULTIPLE_ANSWER => array('multiple_answer.class.php', 'MultipleAnswer'),
FILL_IN_BLANKS => array('fill_blanks.class.php', 'FillBlanks'),
MATCHING => array('matching.class.php', 'Matching'),
FREE_ANSWER => array('freeanswer.class.php', 'FreeAnswer'),
ORAL_EXPRESSION => array('oral_expression.class.php', 'OralExpression'),
HOT_SPOT => array('hotspot.class.php', 'HotSpot'),
HOT_SPOT_DELINEATION => array('hotspot.class.php', 'HotspotDelineation'),
MULTIPLE_ANSWER_COMBINATION => array('multiple_answer_combination.class.php', 'MultipleAnswerCombination'),
UNIQUE_ANSWER_NO_OPTION => array('unique_answer_no_option.class.php', 'UniqueAnswerNoOption'),
MULTIPLE_ANSWER_TRUE_FALSE => array('multiple_answer_true_false.class.php', 'MultipleAnswerTrueFalse'),
MULTIPLE_ANSWER_COMBINATION_TRUE_FALSE => array(
'multiple_answer_combination_true_false.class.php',
'MultipleAnswerCombinationTrueFalse'
),
GLOBAL_MULTIPLE_ANSWER => array('global_multiple_answer.class.php', 'GlobalMultipleAnswer'),
CALCULATED_ANSWER => array('calculated_answer.class.php', 'CalculatedAnswer'),
UNIQUE_ANSWER_IMAGE => ['UniqueAnswerImage.php', 'UniqueAnswerImage'],
DRAGGABLE => ['Draggable.php', 'Draggable'],
MATCHING_DRAGGABLE => ['MatchingDraggable.php', 'MatchingDraggable'],
//MEDIA_QUESTION => array('media_question.class.php' , 'MediaQuestion')
ANNOTATION => ['Annotation.php', 'Annotation'],
READING_COMPREHENSION => ['ReadingComprehension.php', 'ReadingComprehension']
);
/**
* constructor of the class
*
* @author Olivier Brouckaert
*/
public function __construct()
{
$this->id = 0;
$this->question = '';
$this->description = '';
$this->weighting = 0;
$this->position = 1;
$this->picture = '';
$this->level = 1;
$this->category = 0;
// This variable is used when loading an exercise like an scenario with
// an special hotspot: final_overlap, final_missing, final_excess
$this->extra = '';
$this->exerciseList = array();
$this->course = api_get_course_info();
$this->category_list = array();
$this->parent_id = 0;
// See BT#12611
$this->questionTypeWithFeedback = [
MATCHING,
MATCHING_DRAGGABLE,
DRAGGABLE,
FILL_IN_BLANKS,
FREE_ANSWER,
ORAL_EXPRESSION,
CALCULATED_ANSWER,
ANNOTATION
];
}
/**
* @return int|null
*/
public function getIsContent()
{
$isContent = null;
if (isset($_REQUEST['isContent'])) {
$isContent = intval($_REQUEST['isContent']);
}
return $this->isContent = $isContent;
}
/**
* Reads question information from the data base
*
* @param int $id - question ID
* @param int $course_id
*
* @return Question
*
* @author Olivier Brouckaert
*/
public static function read($id, $course_id = null)
{
$id = intval($id);
if (!empty($course_id)) {
$course_info = api_get_course_info_by_id($course_id);
} else {
$course_info = api_get_course_info();
}
$course_id = $course_info['real_id'];
if (empty($course_id) || $course_id == -1) {
return false;
}
$TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION);
$TBL_EXERCISE_QUESTION = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
$sql = "SELECT *
FROM $TBL_QUESTIONS
WHERE c_id = $course_id AND id = $id ";
$result = Database::query($sql);
// if the question has been found
if ($object = Database::fetch_object($result)) {
$objQuestion = self::getInstance($object->type);
if (!empty($objQuestion)) {
$objQuestion->id = (int) $id;
$objQuestion->question = $object->question;
$objQuestion->description = $object->description;
$objQuestion->weighting = $object->ponderation;
$objQuestion->position = $object->position;
$objQuestion->type = (int) $object->type;
$objQuestion->picture = $object->picture;
$objQuestion->level = (int) $object->level;
$objQuestion->extra = $object->extra;
$objQuestion->course = $course_info;
$objQuestion->feedback = isset($object->feedback) ? $object->feedback : '';
$objQuestion->category = TestCategory::getCategoryForQuestion($id, $course_id);
$tblQuiz = Database::get_course_table(TABLE_QUIZ_TEST);
$sql = "SELECT DISTINCT q.exercice_id
FROM $TBL_EXERCISE_QUESTION q
INNER JOIN $tblQuiz e
ON e.c_id = q.c_id AND e.id = q.exercice_id
WHERE
q.c_id = $course_id AND
q.question_id = $id AND
e.active >= 0";
$result = Database::query($sql);
// fills the array with the exercises which this question is in
if ($result) {
while ($obj = Database::fetch_object($result)) {
$objQuestion->exerciseList[] = $obj->exercice_id;
}
}
return $objQuestion;
}
}
// question not found
return false;
}
/**
* returns the question ID
*
* @author Olivier Brouckaert
*
* @return integer - question ID
*/
public function selectId()
{
return $this->id;
}
/**
* returns the question title
*
* @author Olivier Brouckaert
* @return string - question title
*/
public function selectTitle()
{
if (!api_get_configuration_value('save_titles_as_html')) {
return $this->question;
}
return Display::div($this->question, ['style' => 'display: inline-block;']);
}
/**
* @param int $itemNumber
* @return string
*/
public function getTitleToDisplay($itemNumber)
{
$showQuestionTitleHtml = api_get_configuration_value('save_titles_as_html');
$title = $showQuestionTitleHtml ? '' : '';
$title .= $itemNumber.'. '.$this->selectTitle();
$title .= $showQuestionTitleHtml ? '' : '';
return Display::div(
$title,
['class' => 'question_title']
);
}
/**
* returns the question description
*
* @author Olivier Brouckaert
* @return string - question description
*/
public function selectDescription()
{
return $this->description;
}
/**
* returns the question weighting
*
* @author Olivier Brouckaert
* @return integer - question weighting
*/
public function selectWeighting()
{
return $this->weighting;
}
/**
* returns the question position
*
* @author Olivier Brouckaert
* @return integer - question position
*/
public function selectPosition()
{
return $this->position;
}
/**
* returns the answer type
*
* @author Olivier Brouckaert
* @return integer - answer type
*/
public function selectType()
{
return $this->type;
}
/**
* returns the level of the question
*
* @author Nicolas Raynaud
* @return integer - level of the question, 0 by default.
*/
public function getLevel()
{
return $this->level;
}
/**
* returns the picture name
*
* @author Olivier Brouckaert
* @return string - picture name
*/
public function selectPicture()
{
return $this->picture;
}
/**
* @return string
*/
public function selectPicturePath()
{
if (!empty($this->picture)) {
return api_get_path(WEB_COURSE_PATH).$this->course['directory'].'/document/images/'.$this->getPictureFilename();
}
return '';
}
/**
* @return int|string
*/
public function getPictureId()
{
// for backward compatibility
// when in field picture we had the filename not the document id
if (preg_match("/quiz-.*/", $this->picture)) {
return DocumentManager::get_document_id(
$this->course,
$this->selectPicturePath(),
api_get_session_id()
);
}
return $this->picture;
}
/**
* @param int $courseId
* @param int $sessionId
* @return string
*/
public function getPictureFilename($courseId = 0, $sessionId = 0)
{
$courseId = empty($courseId) ? api_get_course_int_id() : (int) $courseId;
$sessionId = empty($sessionId) ? api_get_session_id() : (int) $sessionId;
if (empty($courseId)) {
return '';
}
// for backward compatibility
// when in field picture we had the filename not the document id
if (preg_match("/quiz-.*/", $this->picture)) {
return $this->picture;
}
$pictureId = $this->getPictureId();
$courseInfo = $this->course;
$documentInfo = DocumentManager::get_document_data_by_id(
$pictureId,
$courseInfo['code'],
false,
$sessionId
);
$documentFilename = '';
if ($documentInfo) {
// document in document/images folder
$documentFilename = pathinfo(
$documentInfo['path'],
PATHINFO_BASENAME
);
}
return $documentFilename;
}
/**
* returns the array with the exercise ID list
*
* @author Olivier Brouckaert
* @return array - list of exercise ID which the question is in
*/
public function selectExerciseList()
{
return $this->exerciseList;
}
/**
* returns the number of exercises which this question is in
*
* @author Olivier Brouckaert
* @return integer - number of exercises
*/
public function selectNbrExercises()
{
return sizeof($this->exerciseList);
}
/**
* changes the question title
*
* @param string $title - question title
*
* @author Olivier Brouckaert
*/
public function updateTitle($title)
{
$this->question = $title;
}
/**
* @param int $id
*/
public function updateParentId($id)
{
$this->parent_id = intval($id);
}
/**
* changes the question description
*
* @param string $description - question description
*
* @author Olivier Brouckaert
*
*/
public function updateDescription($description)
{
$this->description = $description;
}
/**
* changes the question weighting
*
* @param integer $weighting - question weighting
*
* @author Olivier Brouckaert
*/
public function updateWeighting($weighting)
{
$this->weighting = $weighting;
}
/**
* @param array $category
*
* @author Hubert Borderiou 12-10-2011
*
*/
public function updateCategory($category)
{
$this->category = $category;
}
/**
* @param int $value
*
* @author Hubert Borderiou 12-10-2011
*/
public function updateScoreAlwaysPositive($value)
{
$this->scoreAlwaysPositive = $value;
}
/**
* @param int $value
*
* @author Hubert Borderiou 12-10-2011
*/
public function updateUncheckedMayScore($value)
{
$this->uncheckedMayScore = $value;
}
/**
* Save category of a question
*
* A question can have n categories if category is empty,
* then question has no category then delete the category entry
*
* @param array $category_list
*
* @author Julio Montoya - Adding multiple cat support
*/
public function saveCategories($category_list)
{
if (!empty($category_list)) {
$this->deleteCategory();
$table = Database::get_course_table(TABLE_QUIZ_QUESTION_REL_CATEGORY);
// update or add category for a question
foreach ($category_list as $category_id) {
$category_id = intval($category_id);
$question_id = intval($this->id);
$sql = "SELECT count(*) AS nb
FROM $table
WHERE
category_id = $category_id
AND question_id = $question_id
AND c_id=".api_get_course_int_id();
$res = Database::query($sql);
$row = Database::fetch_array($res);
if ($row['nb'] > 0) {
// DO nothing
} else {
$sql = "INSERT INTO $table (c_id, question_id, category_id)
VALUES (".api_get_course_int_id().", $question_id, $category_id)";
Database::query($sql);
}
}
}
}
/**
* in this version, a question can only have 1 category
* if category is 0, then question has no category then delete the category entry
* @param int $categoryId
* @return bool
*
* @author Hubert Borderiou 12-10-2011
*/
public function saveCategory($categoryId)
{
$courseId = api_get_course_int_id();
if (empty($courseId)) {
return false;
}
if ($categoryId <= 0) {
$this->deleteCategory();
} else {
// update or add category for a question
$table = Database::get_course_table(TABLE_QUIZ_QUESTION_REL_CATEGORY);
$categoryId = intval($categoryId);
$question_id = intval($this->id);
$sql = "SELECT count(*) AS nb FROM $table
WHERE
question_id = $question_id AND
c_id = ".$courseId;
$res = Database::query($sql);
$row = Database::fetch_array($res);
if ($row['nb'] > 0) {
$sql = "UPDATE $table
SET category_id = $categoryId
WHERE
question_id = $question_id AND
c_id = ".$courseId;
Database::query($sql);
} else {
$sql = "INSERT INTO $table (c_id, question_id, category_id)
VALUES (".$courseId.", $question_id, $categoryId)";
Database::query($sql);
}
return true;
}
}
/**
* @author hubert borderiou 12-10-2011
* delete any category entry for question id
* delete the category for question
*/
public function deleteCategory()
{
$table = Database::get_course_table(TABLE_QUIZ_QUESTION_REL_CATEGORY);
$question_id = intval($this->id);
$sql = "DELETE FROM $table
WHERE
question_id = $question_id AND
c_id = ".api_get_course_int_id();
Database::query($sql);
}
/**
* changes the question position
*
* @param integer $position - question position
*
* @author Olivier Brouckaert
*/
public function updatePosition($position)
{
$this->position = $position;
}
/**
* changes the question level
*
* @param integer $level - question level
*
* @author Nicolas Raynaud
*/
public function updateLevel($level)
{
$this->level = $level;
}
/**
* changes the answer type. If the user changes the type from "unique answer" to "multiple answers"
* (or conversely) answers are not deleted, otherwise yes
*
* @param integer $type - answer type
*
* @author Olivier Brouckaert
*/
public function updateType($type)
{
$TBL_REPONSES = Database::get_course_table(TABLE_QUIZ_ANSWER);
$course_id = $this->course['real_id'];
if (empty($course_id)) {
$course_id = api_get_course_int_id();
}
// if we really change the type
if ($type != $this->type) {
// if we don't change from "unique answer" to "multiple answers" (or conversely)
if (!in_array($this->type, array(UNIQUE_ANSWER, MULTIPLE_ANSWER)) ||
!in_array($type, array(UNIQUE_ANSWER, MULTIPLE_ANSWER))
) {
// removes old answers
$sql = "DELETE FROM $TBL_REPONSES
WHERE c_id = $course_id AND question_id = ".intval($this->id);
Database::query($sql);
}
$this->type = $type;
}
}
/**
* Get default hot spot folder in documents
* @return string
*/
public function getHotSpotFolderInCourse()
{
if (empty($this->course) || empty($this->course['directory'])) {
// Stop everything if course is not set.
api_not_allowed();
}
$pictureAbsolutePath = api_get_path(SYS_COURSE_PATH).$this->course['directory'].'/document/images/';
$picturePath = basename($pictureAbsolutePath);
if (!is_dir($picturePath)) {
create_unexisting_directory(
$this->course,
api_get_user_id(),
0,
0,
0,
dirname($pictureAbsolutePath),
'/'.$picturePath,
$picturePath
);
}
return $pictureAbsolutePath;
}
/**
* adds a picture to the question
*
* @param string $picture - temporary path of the picture to upload
*
* @return boolean - true if uploaded, otherwise false
*
* @author Olivier Brouckaert
*/
public function uploadPicture($picture)
{
$picturePath = $this->getHotSpotFolderInCourse();
// if the question has got an ID
if ($this->id) {
$pictureFilename = self::generatePictureName();
$img = new Image($picture);
$img->send_image($picturePath.'/'.$pictureFilename, -1, 'jpg');
$document_id = add_document(
$this->course,
'/images/'.$pictureFilename,
'file',
filesize($picturePath.'/'.$pictureFilename),
$pictureFilename
);
if ($document_id) {
$this->picture = $document_id;
if (!file_exists($picturePath.'/'.$pictureFilename)) {
return false;
}
api_item_property_update(
$this->course,
TOOL_DOCUMENT,
$document_id,
'DocumentAdded',
api_get_user_id()
);
$this->resizePicture('width', 800);
return true;
}
}
return false;
}
/**
* return the name for image use in hotspot question
* to be unique, name is quiz-[utc unix timestamp].jpg
* @param string $prefix
* @param string $extension
* @return string
*/
public function generatePictureName($prefix = 'quiz-', $extension = 'jpg')
{
// image name is quiz-xxx.jpg in folder images/
$utcTime = time();
return $prefix.$utcTime.'.'.$extension;
}
/**
* Resizes a picture || Warning!: can only be called after uploadPicture,
* or if picture is already available in object.
* @param string $Dimension - Resizing happens proportional according to given dimension: height|width|any
* @param integer $Max - Maximum size
*
* @return boolean|null - true if success, false if failed
*
* @author Toon Keppens
*/
private function resizePicture($Dimension, $Max)
{
// if the question has an ID
if (!$this->id) {
return false;
}
$picturePath = $this->getHotSpotFolderInCourse().'/'.$this->getPictureFilename();
// Get dimensions from current image.
$my_image = new Image($picturePath);
$current_image_size = $my_image->get_image_size();
$current_width = $current_image_size['width'];
$current_height = $current_image_size['height'];
if ($current_width < $Max && $current_height < $Max) {
return true;
} elseif ($current_height == '') {
return false;
}
// Resize according to height.
if ($Dimension == "height") {
$resize_scale = $current_height / $Max;
$new_width = ceil($current_width / $resize_scale);
}
// Resize according to width
if ($Dimension == "width") {
$new_width = $Max;
}
// Resize according to height or width, both should not be larger than $Max after resizing.
if ($Dimension == "any") {
if ($current_height > $current_width || $current_height == $current_width) {
$resize_scale = $current_height / $Max;
$new_width = ceil($current_width / $resize_scale);
}
if ($current_height < $current_width) {
$new_width = $Max;
}
}
$my_image->resize($new_width);
$result = $my_image->send_image($picturePath);
if ($result) {
return true;
}
return false;
}
/**
* deletes the picture
*
* @author Olivier Brouckaert
* @return boolean - true if removed, otherwise false
*/
public function removePicture()
{
$picturePath = $this->getHotSpotFolderInCourse();
// if the question has got an ID and if the picture exists
if ($this->id) {
$picture = $this->picture;
$this->picture = '';
return @unlink($picturePath.'/'.$picture) ? true : false;
}
return false;
}
/**
* Exports a picture to another question
*
* @author Olivier Brouckaert
* @param integer $questionId - ID of the target question
* @param array $courseInfo
* @return boolean - true if copied, otherwise false
*/
public function exportPicture($questionId, $courseInfo)
{
if (empty($questionId) || empty($courseInfo)) {
return false;
}
$course_id = $courseInfo['real_id'];
$TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION);
$destination_path = api_get_path(SYS_COURSE_PATH).$courseInfo['path'].'/document/images';
$source_path = $this->getHotSpotFolderInCourse();
// if the question has got an ID and if the picture exists
if (!$this->id || empty($this->picture)) {
return false;
}
$picture = $this->generatePictureName();
if (file_exists($source_path.'/'.$this->picture)) {
// for backward compatibility
$result = @copy(
$source_path.'/'.$this->picture,
$destination_path.'/'.$picture
);
} else {
$imageInfo = DocumentManager::get_document_data_by_id(
$this->picture,
$courseInfo['code']
);
if (file_exists($imageInfo['absolute_path'])) {
$result = @copy(
$imageInfo['absolute_path'],
$destination_path.'/'.$picture
);
}
}
// If copy was correct then add to the database
if (!$result) {
return false;
}
$sql = "UPDATE $TBL_QUESTIONS SET
picture = '".Database::escape_string($picture)."'
WHERE c_id = $course_id AND id='".intval($questionId)."'";
Database::query($sql);
$documentId = add_document(
$courseInfo,
'/images/'.$picture,
'file',
filesize($destination_path.'/'.$picture),
$picture
);
if (!$documentId) {
return false;
}
return api_item_property_update(
$courseInfo,
TOOL_DOCUMENT,
$documentId,
'DocumentAdded',
api_get_user_id()
);
}
/**
* Saves the picture coming from POST into a temporary file
* Temporary pictures are used when we don't want to save a picture right after a form submission.
* For example, if we first show a confirmation box.
*
* @author Olivier Brouckaert
* @param string $picture - temporary path of the picture to move
* @param string $pictureName - Name of the picture
*/
public function setTmpPicture($picture, $pictureName)
{
$picturePath = $this->getHotSpotFolderInCourse();
$pictureName = explode('.', $pictureName);
$Extension = $pictureName[sizeof($pictureName) - 1];
// saves the picture into a temporary file
@move_uploaded_file($picture, $picturePath.'/tmp.'.$Extension);
}
/**
* Set title
* @param string $title
*/
public function setTitle($title)
{
$this->question = $title;
}
/**
* Sets extra info
* @param string $extra
*/
public function setExtra($extra)
{
$this->extra = $extra;
}
/**
* updates the question in the data base
* if an exercise ID is provided, we add that exercise ID into the exercise list
*
* @author Olivier Brouckaert
* @param Exercise $exercise
*/
public function save($exercise)
{
$TBL_EXERCISE_QUESTION = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
$TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION);
$em = Database::getManager();
$exerciseId = $exercise->id;
$id = $this->id;
$question = $this->question;
$description = $this->description;
$weighting = $this->weighting;
$position = $this->position;
$type = $this->type;
$picture = $this->picture;
$level = $this->level;
$extra = $this->extra;
$c_id = $this->course['real_id'];
$categoryId = $this->category;
// question already exists
if (!empty($id)) {
$params = [
'question' => $question,
'description' => $description,
'ponderation' => $weighting,
'position' => $position,
'type' => $type,
'picture' => $picture,
'extra' => $extra,
'level' => $level,
];
if ($exercise->questionFeedbackEnabled) {
$params['feedback'] = $this->feedback;
}
Database::update(
$TBL_QUESTIONS,
$params,
['c_id = ? AND id = ?' => [$c_id, $id]]
);
$this->saveCategory($categoryId);
if (!empty($exerciseId)) {
api_item_property_update(
$this->course,
TOOL_QUIZ,
$id,
'QuizQuestionUpdated',
api_get_user_id()
);
}
if (api_get_setting('search_enabled') == 'true') {
if ($exerciseId != 0) {
$this->search_engine_edit($exerciseId);
} else {
/**
* actually there is *not* an user interface for
* creating questions without a relation with an exercise
*/
}
}
} else {
// creates a new question
$sql = "SELECT max(position)
FROM $TBL_QUESTIONS as question,
$TBL_EXERCISE_QUESTION as test_question
WHERE
question.id = test_question.question_id AND
test_question.exercice_id = ".intval($exerciseId)." AND
question.c_id = $c_id AND
test_question.c_id = $c_id ";
$result = Database::query($sql);
$current_position = Database::result($result, 0, 0);
$this->updatePosition($current_position + 1);
$position = $this->position;
$params = [
'c_id' => $c_id,
'question' => $question,
'description' => $description,
'ponderation' => $weighting,
'position' => $position,
'type' => $type,
'picture' => $picture,
'extra' => $extra,
'level' => $level
];
if ($exercise->questionFeedbackEnabled) {
$params['feedback'] = $this->feedback;
}
$this->id = Database::insert($TBL_QUESTIONS, $params);
if ($this->id) {
$sql = "UPDATE $TBL_QUESTIONS SET id = iid WHERE iid = {$this->id}";
Database::query($sql);
api_item_property_update(
$this->course,
TOOL_QUIZ,
$this->id,
'QuizQuestionAdded',
api_get_user_id()
);
// If hotspot, create first answer
if ($type == HOT_SPOT || $type == HOT_SPOT_ORDER) {
$quizAnswer = new CQuizAnswer();
$quizAnswer
->setCId($c_id)
->setQuestionId($this->id)
->setAnswer('')
->setPonderation(10)
->setPosition(1)
->setHotspotCoordinates('0;0|0|0')
->setHotspotType('square');
$em->persist($quizAnswer);
$em->flush();
$id = $quizAnswer->getIid();
if ($id) {
$quizAnswer
->setId($id)
->setIdAuto($id);
$em->merge($quizAnswer);
$em->flush();
}
}
if ($type == HOT_SPOT_DELINEATION) {
$quizAnswer = new CQuizAnswer();
$quizAnswer
->setCId($c_id)
->setQuestionId($this->id)
->setAnswer('')
->setPonderation(10)
->setPosition(1)
->setHotspotCoordinates('0;0|0|0')
->setHotspotType('delineation');
$em->persist($quizAnswer);
$em->flush();
$id = $quizAnswer->getIid();
if ($id) {
$quizAnswer
->setId($id)
->setIdAuto($id);
$em->merge($quizAnswer);
$em->flush();
}
}
if (api_get_setting('search_enabled') == 'true') {
if ($exerciseId != 0) {
$this->search_engine_edit($exerciseId, true);
} else {
/**
* actually there is *not* an user interface for
* creating questions without a relation with an exercise
*/
}
}
}
}
// if the question is created in an exercise
if ($exerciseId) {
// adds the exercise into the exercise list of this question
$this->addToList($exerciseId, true);
}
}
public function search_engine_edit(
$exerciseId,
$addQs = false,
$rmQs = false
) {
// update search engine and its values table if enabled
if (api_get_setting('search_enabled') == 'true' && extension_loaded('xapian')) {
$course_id = api_get_course_id();
// get search_did
$tbl_se_ref = Database::get_main_table(TABLE_MAIN_SEARCH_ENGINE_REF);
if ($addQs || $rmQs) {
//there's only one row per question on normal db and one document per question on search engine db
$sql = 'SELECT * FROM %s
WHERE course_code=\'%s\' AND tool_id=\'%s\' AND ref_id_second_level=%s LIMIT 1';
$sql = sprintf($sql, $tbl_se_ref, $course_id, TOOL_QUIZ, $this->id);
} else {
$sql = 'SELECT * FROM %s
WHERE course_code=\'%s\' AND tool_id=\'%s\'
AND ref_id_high_level=%s AND ref_id_second_level=%s LIMIT 1';
$sql = sprintf($sql, $tbl_se_ref, $course_id, TOOL_QUIZ, $exerciseId, $this->id);
}
$res = Database::query($sql);
if (Database::num_rows($res) > 0 || $addQs) {
$di = new ChamiloIndexer();
if ($addQs) {
$question_exercises = array((int) $exerciseId);
} else {
$question_exercises = array();
}
isset($_POST['language']) ? $lang = Database::escape_string($_POST['language']) : $lang = 'english';
$di->connectDb(null, null, $lang);
// retrieve others exercise ids
$se_ref = Database::fetch_array($res);
$se_doc = $di->get_document((int) $se_ref['search_did']);
if ($se_doc !== false) {
if (($se_doc_data = $di->get_document_data($se_doc)) !== false) {
$se_doc_data = unserialize($se_doc_data);
if (isset($se_doc_data[SE_DATA]['type']) &&
$se_doc_data[SE_DATA]['type'] == SE_DOCTYPE_EXERCISE_QUESTION
) {
if (isset($se_doc_data[SE_DATA]['exercise_ids']) &&
is_array($se_doc_data[SE_DATA]['exercise_ids'])
) {
foreach ($se_doc_data[SE_DATA]['exercise_ids'] as $old_value) {
if (!in_array($old_value, $question_exercises)) {
$question_exercises[] = $old_value;
}
}
}
}
}
}
if ($rmQs) {
while (($key = array_search($exerciseId, $question_exercises)) !== false) {
unset($question_exercises[$key]);
}
}
// build the chunk to index
$ic_slide = new IndexableChunk();
$ic_slide->addValue("title", $this->question);
$ic_slide->addCourseId($course_id);
$ic_slide->addToolId(TOOL_QUIZ);
$xapian_data = array(
SE_COURSE_ID => $course_id,
SE_TOOL_ID => TOOL_QUIZ,
SE_DATA => array(
'type' => SE_DOCTYPE_EXERCISE_QUESTION,
'exercise_ids' => $question_exercises,
'question_id' => (int) $this->id
),
SE_USER => (int) api_get_user_id(),
);
$ic_slide->xapian_data = serialize($xapian_data);
$ic_slide->addValue("content", $this->description);
//TODO: index answers, see also form validation on question_admin.inc.php
$di->remove_document($se_ref['search_did']);
$di->addChunk($ic_slide);
//index and return search engine document id
if (!empty($question_exercises)) { // if empty there is nothing to index
$did = $di->index();
unset($di);
}
if ($did || $rmQs) {
// save it to db
if ($addQs || $rmQs) {
$sql = "DELETE FROM %s
WHERE course_code = '%s' AND tool_id = '%s' AND ref_id_second_level = '%s'";
$sql = sprintf($sql, $tbl_se_ref, $course_id, TOOL_QUIZ, $this->id);
} else {
$sql = "DELETE FROM %S
WHERE
course_code = '%s'
AND tool_id = '%s'
AND tool_id = '%s'
AND ref_id_high_level = '%s'
AND ref_id_second_level = '%s'";
$sql = sprintf($sql, $tbl_se_ref, $course_id, TOOL_QUIZ, $exerciseId, $this->id);
}
Database::query($sql);
if ($rmQs) {
if (!empty($question_exercises)) {
$sql = "INSERT INTO %s (
id, course_code, tool_id, ref_id_high_level, ref_id_second_level, search_did
)
VALUES (
NULL, '%s', '%s', %s, %s, %s
)";
$sql = sprintf(
$sql,
$tbl_se_ref,
$course_id,
TOOL_QUIZ,
array_shift($question_exercises),
$this->id,
$did
);
Database::query($sql);
}
} else {
$sql = "INSERT INTO %s (
id, course_code, tool_id, ref_id_high_level, ref_id_second_level, search_did
)
VALUES (
NULL , '%s', '%s', %s, %s, %s
)";
$sql = sprintf($sql, $tbl_se_ref, $course_id, TOOL_QUIZ, $exerciseId, $this->id, $did);
Database::query($sql);
}
}
}
}
}
/**
* adds an exercise into the exercise list
*
* @author Olivier Brouckaert
* @param integer $exerciseId - exercise ID
* @param boolean $fromSave - from $this->save() or not
*/
public function addToList($exerciseId, $fromSave = false)
{
$exerciseRelQuestionTable = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
$id = $this->id;
// checks if the exercise ID is not in the list
if (!in_array($exerciseId, $this->exerciseList)) {
$this->exerciseList[] = $exerciseId;
$new_exercise = new Exercise();
$new_exercise->read($exerciseId);
$count = $new_exercise->selectNbrQuestions();
$count++;
$sql = "INSERT INTO $exerciseRelQuestionTable (c_id, question_id, exercice_id, question_order)
VALUES ({$this->course['real_id']}, ".intval($id).", ".intval($exerciseId).", '$count')";
Database::query($sql);
// we do not want to reindex if we had just saved adnd indexed the question
if (!$fromSave) {
$this->search_engine_edit($exerciseId, true);
}
}
}
/**
* removes an exercise from the exercise list
*
* @author Olivier Brouckaert
* @param integer $exerciseId - exercise ID
* @return boolean - true if removed, otherwise false
*/
public function removeFromList($exerciseId)
{
$TBL_EXERCISE_QUESTION = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
$id = $this->id;
// searches the position of the exercise ID in the list
$pos = array_search($exerciseId, $this->exerciseList);
$course_id = api_get_course_int_id();
// exercise not found
if ($pos === false) {
return false;
} else {
// deletes the position in the array containing the wanted exercise ID
unset($this->exerciseList[$pos]);
//update order of other elements
$sql = "SELECT question_order
FROM $TBL_EXERCISE_QUESTION
WHERE
c_id = $course_id
AND question_id = ".intval($id)."
AND exercice_id = " . intval($exerciseId);
$res = Database::query($sql);
if (Database::num_rows($res) > 0) {
$row = Database::fetch_array($res);
if (!empty($row['question_order'])) {
$sql = "UPDATE $TBL_EXERCISE_QUESTION
SET question_order = question_order-1
WHERE
c_id = $course_id
AND exercice_id = ".intval($exerciseId)."
AND question_order > " . $row['question_order'];
Database::query($sql);
}
}
$sql = "DELETE FROM $TBL_EXERCISE_QUESTION
WHERE
c_id = $course_id
AND question_id = ".intval($id)."
AND exercice_id = " . intval($exerciseId);
Database::query($sql);
return true;
}
}
/**
* Deletes a question from the database
* the parameter tells if the question is removed from all exercises (value = 0),
* or just from one exercise (value = exercise ID)
*
* @author Olivier Brouckaert
* @param integer $deleteFromEx - exercise ID if the question is only removed from one exercise
*/
public function delete($deleteFromEx = 0)
{
$course_id = api_get_course_int_id();
$TBL_EXERCISE_QUESTION = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
$TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION);
$TBL_REPONSES = Database::get_course_table(TABLE_QUIZ_ANSWER);
$TBL_QUIZ_QUESTION_REL_CATEGORY = Database::get_course_table(TABLE_QUIZ_QUESTION_REL_CATEGORY);
$id = intval($this->id);
// if the question must be removed from all exercises
if (!$deleteFromEx) {
//update the question_order of each question to avoid inconsistencies
$sql = "SELECT exercice_id, question_order
FROM $TBL_EXERCISE_QUESTION
WHERE c_id = $course_id AND question_id = ".intval($id)."";
$res = Database::query($sql);
if (Database::num_rows($res) > 0) {
while ($row = Database::fetch_array($res)) {
if (!empty($row['question_order'])) {
$sql = "UPDATE $TBL_EXERCISE_QUESTION
SET question_order = question_order-1
WHERE
c_id = $course_id AND
exercice_id = ".intval($row['exercice_id'])." AND
question_order > " . $row['question_order'];
Database::query($sql);
}
}
}
$sql = "DELETE FROM $TBL_EXERCISE_QUESTION
WHERE c_id = $course_id AND question_id = ".$id;
Database::query($sql);
$sql = "DELETE FROM $TBL_QUESTIONS
WHERE c_id = $course_id AND id = ".$id;
Database::query($sql);
$sql = "DELETE FROM $TBL_REPONSES
WHERE c_id = $course_id AND question_id = ".$id;
Database::query($sql);
// remove the category of this question in the question_rel_category table
$sql = "DELETE FROM $TBL_QUIZ_QUESTION_REL_CATEGORY
WHERE
c_id = $course_id AND
question_id = ".$id;
Database::query($sql);
api_item_property_update(
$this->course,
TOOL_QUIZ,
$id,
'QuizQuestionDeleted',
api_get_user_id()
);
$this->removePicture();
} else {
// just removes the exercise from the list
$this->removeFromList($deleteFromEx);
if (api_get_setting('search_enabled') == 'true' && extension_loaded('xapian')) {
// disassociate question with this exercise
$this->search_engine_edit($deleteFromEx, false, true);
}
api_item_property_update(
$this->course,
TOOL_QUIZ,
$id,
'QuizQuestionDeleted',
api_get_user_id()
);
}
}
/**
* Duplicates the question
*
* @author Olivier Brouckaert
* @param array $course_info Course info of the destination course
* @return false|string ID of the new question
*/
public function duplicate($course_info = [])
{
if (empty($course_info)) {
$course_info = $this->course;
} else {
$course_info = $course_info;
}
$TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION);
$TBL_QUESTION_OPTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION_OPTION);
$question = $this->question;
$description = $this->description;
$weighting = $this->weighting;
$position = $this->position;
$type = $this->type;
$level = intval($this->level);
$extra = $this->extra;
// Using the same method used in the course copy to transform URLs
if ($this->course['id'] != $course_info['id']) {
$description = DocumentManager::replaceUrlWithNewCourseCode(
$description,
$this->course['code'],
$course_info['id']
);
$question = DocumentManager::replaceUrlWithNewCourseCode(
$question,
$this->course['code'],
$course_info['id']
);
}
$course_id = $course_info['real_id'];
// Read the source options
$options = self::readQuestionOption($this->id, $this->course['real_id']);
// Inserting in the new course db / or the same course db
$params = [
'c_id' => $course_id,
'question' => $question,
'description' => $description,
'ponderation' => $weighting,
'position' => $position,
'type' => $type,
'level' => $level,
'extra' => $extra
];
$newQuestionId = Database::insert($TBL_QUESTIONS, $params);
if ($newQuestionId) {
$sql = "UPDATE $TBL_QUESTIONS
SET id = iid
WHERE iid = $newQuestionId";
Database::query($sql);
if (!empty($options)) {
// Saving the quiz_options
foreach ($options as $item) {
$item['question_id'] = $newQuestionId;
$item['c_id'] = $course_id;
unset($item['id']);
unset($item['iid']);
$id = Database::insert($TBL_QUESTION_OPTIONS, $item);
if ($id) {
$sql = "UPDATE $TBL_QUESTION_OPTIONS
SET id = iid
WHERE iid = $id";
Database::query($sql);
}
}
}
// Duplicates the picture of the hotspot
$this->exportPicture($newQuestionId, $course_info);
}
return $newQuestionId;
}
/**
* @return string
*/
public function get_question_type_name()
{
$key = self::$questionTypes[$this->type];
return get_lang($key[1]);
}
/**
* @param string $type
* @return null
*/
public static function get_question_type($type)
{
if ($type == ORAL_EXPRESSION && api_get_setting('enable_record_audio') !== 'true') {
return null;
}
return self::$questionTypes[$type];
}
/**
* @return array
*/
public static function get_question_type_list()
{
if (api_get_setting('enable_record_audio') !== 'true') {
self::$questionTypes[ORAL_EXPRESSION] = null;
unset(self::$questionTypes[ORAL_EXPRESSION]);
}
if (api_get_setting('enable_quiz_scenario') !== 'true') {
self::$questionTypes[HOT_SPOT_DELINEATION] = null;
unset(self::$questionTypes[HOT_SPOT_DELINEATION]);
}
return self::$questionTypes;
}
/**
* Returns an instance of the class corresponding to the type
* @param integer $type the type of the question
* @return $this instance of a Question subclass (or of Questionc class by default)
*/
public static function getInstance($type)
{
if (!is_null($type)) {
list($file_name, $class_name) = self::get_question_type($type);
if (!empty($file_name)) {
if (class_exists($class_name)) {
return new $class_name();
} else {
echo 'Can\'t instanciate class '.$class_name.' of type '.$type;
}
}
}
return null;
}
/**
* Creates the form to create / edit a question
* A subclass can redefine this function to add fields...
* @param FormValidator $form
* @param Exercise $exercise
*/
public function createForm(&$form, $exercise)
{
echo '';
// question name
if (api_get_configuration_value('save_titles_as_html')) {
$editorConfig = ['ToolbarSet' => 'Minimal'];
$form->addHtmlEditor(
'questionName',
get_lang('Question'),
false,
false,
$editorConfig,
true
);
} else {
$form->addElement('text', 'questionName', get_lang('Question'));
}
$form->addRule('questionName', get_lang('GiveQuestion'), 'required');
// default content
$isContent = isset($_REQUEST['isContent']) ? intval($_REQUEST['isContent']) : null;
// Question type
$answerType = isset($_REQUEST['answerType']) ? intval($_REQUEST['answerType']) : null;
$form->addElement('hidden', 'answerType', $answerType);
// html editor
$editorConfig = array(
'ToolbarSet' => 'TestQuestionDescription',
'Height' => '150'
);
if (!api_is_allowed_to_edit(null, true)) {
$editorConfig['UserStatus'] = 'student';
}
$form->addButtonAdvancedSettings('advanced_params');
$form->addElement('html', '');
$form->addHtmlEditor(
'questionDescription',
get_lang('QuestionDescription'),
false,
false,
$editorConfig
);
// hidden values
$my_id = isset($_REQUEST['myid']) ? intval($_REQUEST['myid']) : null;
$form->addElement('hidden', 'myid', $my_id);
if ($this->type != MEDIA_QUESTION) {
// Advanced parameters
$select_level = self::get_default_levels();
$form->addElement(
'select',
'questionLevel',
get_lang('Difficulty'),
$select_level
);
// Categories
$tabCat = TestCategory::getCategoriesIdAndName();
$form->addElement(
'select',
'questionCategory',
get_lang('Category'),
$tabCat
);
global $text;
switch ($this->type) {
case UNIQUE_ANSWER:
$buttonGroup = array();
$buttonGroup[] = $form->addButtonSave(
$text,
'submitQuestion',
true
);
$buttonGroup[] = $form->addButton(
'convertAnswer',
get_lang('ConvertToMultipleAnswer'),
'dot-circle-o',
'default',
null,
null,
null,
true
);
$form->addGroup($buttonGroup);
break;
case MULTIPLE_ANSWER:
$buttonGroup = array();
$buttonGroup[] = $form->addButtonSave(
$text,
'submitQuestion',
true
);
$buttonGroup[] = $form->addButton(
'convertAnswer',
get_lang('ConvertToUniqueAnswer'),
'check-square-o',
'default',
null,
null,
null,
true
);
$form->addGroup($buttonGroup);
break;
}
//Medias
//$course_medias = self::prepare_course_media_select(api_get_course_int_id());
//$form->addElement('select', 'parent_id', get_lang('AttachToMedia'), $course_medias);
}
$form->addElement('html', '
');
if (!isset($_GET['fromExercise'])) {
switch ($answerType) {
case 1:
$this->question = get_lang('DefaultUniqueQuestion');
break;
case 2:
$this->question = get_lang('DefaultMultipleQuestion');
break;
case 3:
$this->question = get_lang('DefaultFillBlankQuestion');
break;
case 4:
$this->question = get_lang('DefaultMathingQuestion');
break;
case 5:
$this->question = get_lang('DefaultOpenQuestion');
break;
case 9:
$this->question = get_lang('DefaultMultipleQuestion');
break;
}
}
if (!is_null($exercise)) {
if ($exercise->questionFeedbackEnabled && $this->showFeedback($exercise)) {
$form->addTextarea('feedback', get_lang('FeedbackIfNotCorrect'));
}
}
// default values
$defaults = array();
$defaults['questionName'] = $this->question;
$defaults['questionDescription'] = $this->description;
$defaults['questionLevel'] = $this->level;
$defaults['questionCategory'] = $this->category;
$defaults['feedback'] = $this->feedback;
// Came from he question pool
if (isset($_GET['fromExercise'])) {
$form->setDefaults($defaults);
}
if (!empty($_REQUEST['myid'])) {
$form->setDefaults($defaults);
} else {
if ($isContent == 1) {
$form->setDefaults($defaults);
}
}
}
/**
* function which process the creation of questions
* @param FormValidator $form
* @param Exercise $exercise
*/
public function processCreation($form, $exercise)
{
$this->updateTitle($form->getSubmitValue('questionName'));
$this->updateDescription($form->getSubmitValue('questionDescription'));
$this->updateLevel($form->getSubmitValue('questionLevel'));
$this->updateCategory($form->getSubmitValue('questionCategory'));
$this->setFeedback($form->getSubmitValue('feedback'));
//Save normal question if NOT media
if ($this->type != MEDIA_QUESTION) {
$this->save($exercise);
// modify the exercise
$exercise->addToList($this->id);
$exercise->update_question_positions();
}
}
/**
* abstract function which creates the form to create / edit the answers of the question
* @param FormValidator $form
*/
abstract public function createAnswersForm($form);
/**
* abstract function which process the creation of answers
* @param FormValidator $form
* @param Exercise $exercise
*/
abstract public function processAnswersCreation($form, $exercise);
/**
* Displays the menu of question types
*
* @param Exercise $objExercise
*/
public static function display_type_menu($objExercise)
{
$feedback_type = $objExercise->feedback_type;
$exerciseId = $objExercise->id;
// 1. by default we show all the question types
$question_type_custom_list = self::get_question_type_list();
if (!isset($feedback_type)) {
$feedback_type = 0;
}
if ($feedback_type == 1) {
//2. but if it is a feedback DIRECT we only show the UNIQUE_ANSWER type that is currently available
$question_type_custom_list = array(
UNIQUE_ANSWER => self::$questionTypes[UNIQUE_ANSWER],
HOT_SPOT_DELINEATION => self::$questionTypes[HOT_SPOT_DELINEATION]
);
} else {
unset($question_type_custom_list[HOT_SPOT_DELINEATION]);
}
echo '';
echo '';
echo '
';
}
/**
* @param int $question_id
* @param string $name
* @param int $course_id
* @param int $position
* @return false|string
*/
public static function saveQuestionOption($question_id, $name, $course_id, $position = 0)
{
$table = Database::get_course_table(TABLE_QUIZ_QUESTION_OPTION);
$params['question_id'] = intval($question_id);
$params['name'] = $name;
$params['position'] = $position;
$params['c_id'] = $course_id;
$result = self::readQuestionOption($question_id, $course_id);
$last_id = Database::insert($table, $params);
if ($last_id) {
$sql = "UPDATE $table SET id = iid WHERE iid = $last_id";
Database::query($sql);
}
return $last_id;
}
/**
* @param int $question_id
* @param int $course_id
*/
public static function deleteAllQuestionOptions($question_id, $course_id)
{
$table = Database::get_course_table(TABLE_QUIZ_QUESTION_OPTION);
Database::delete(
$table,
array(
'c_id = ? AND question_id = ?' => array(
$course_id,
$question_id
)
)
);
}
/**
* @param int $id
* @param array $params
* @param int $course_id
* @return bool|int
*/
public static function updateQuestionOption($id, $params, $course_id)
{
$table = Database::get_course_table(TABLE_QUIZ_QUESTION_OPTION);
$result = Database::update(
$table,
$params,
array('c_id = ? AND id = ?' => array($course_id, $id))
);
return $result;
}
/**
* @param int $question_id
* @param int $course_id
* @return array
*/
public static function readQuestionOption($question_id, $course_id)
{
$table = Database::get_course_table(TABLE_QUIZ_QUESTION_OPTION);
$result = Database::select(
'*',
$table,
array(
'where' => array(
'c_id = ? AND question_id = ?' => array(
$course_id,
$question_id
)
),
'order' => 'id ASC'
)
);
return $result;
}
/**
* Shows question title an description
*
* @param Exercise $exercise
* @param int $counter
* @param array $score
* @return string HTML string with the header of the question (before the answers table)
*/
public function return_header($exercise, $counter = null, $score = [])
{
$counter_label = '';
if (!empty($counter)) {
$counter_label = intval($counter);
}
$score_label = get_lang('Wrong');
$class = 'error';
if ($score['pass'] == true) {
$score_label = get_lang('Correct');
$class = 'success';
}
if (in_array($this->type, [FREE_ANSWER, ORAL_EXPRESSION, ANNOTATION])) {
$score['revised'] = isset($score['revised']) ? $score['revised'] : false;
if ($score['revised'] == true) {
$score_label = get_lang('Revised');
$class = '';
} else {
$score_label = get_lang('NotRevised');
$class = 'warning';
$weight = float_format($score['weight'], 1);
$score['result'] = " ? / ".$weight;
$model = ExerciseLib::getCourseScoreModel();
if (!empty($model)) {
$score['result'] = " ? ";
}
$hide = api_get_configuration_value('hide_free_question_score');
if ($hide === true) {
$score['result'] = '-';
}
}
}
// display question category, if any
$header = TestCategory::returnCategoryAndTitle($this->id);
$show_media = null;
if ($show_media) {
$header .= $this->show_media_content();
}
$header .= Display::page_subheader2($counter_label.". ".$this->question);
$header .= ExerciseLib::getQuestionRibbon($class, $score_label, $score['result']);
if ($this->type != READING_COMPREHENSION) {
// Do not show the description (the text to read) if the question is of type READING_COMPREHENSION
$header .= Display::div(
$this->description,
array('class' => 'question_description')
);
} else {
if ($score['pass'] == true) {
$message = Display::div(
sprintf(
get_lang('ReadingQuestionCongratsSpeedXReachedForYWords'),
ReadingComprehension::$speeds[$this->level],
$this->getWordsCount()
)
);
} else {
$message = Display::div(
sprintf(
get_lang('ReadingQuestionCongratsSpeedXNotReachedForYWords'),
ReadingComprehension::$speeds[$this->level],
$this->getWordsCount()
)
);
}
$header .= $message.'
';
}
if (isset($score['pass']) && $score['pass'] === false) {
if ($this->showFeedback($exercise)) {
$header .= $this->returnFormatFeedback();
}
}
return $header;
}
/**
* Create a question from a set of parameters
* @param int Quiz ID
* @param string Question name
* @param int Maximum result for the question
* @param int Type of question (see constants at beginning of question.class.php)
* @param int Question level/category
* @param string $quiz_id
*/
public function create_question(
$quiz_id,
$question_name,
$question_description = '',
$max_score = 0,
$type = 1,
$level = 1
) {
$course_id = api_get_course_int_id();
$tbl_quiz_question = Database::get_course_table(TABLE_QUIZ_QUESTION);
$tbl_quiz_rel_question = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
$quiz_id = intval($quiz_id);
$max_score = (float) $max_score;
$type = intval($type);
$level = intval($level);
// Get the max position
$sql = "SELECT max(position) as max_position
FROM $tbl_quiz_question q
INNER JOIN $tbl_quiz_rel_question r
ON
q.id = r.question_id AND
exercice_id = $quiz_id AND
q.c_id = $course_id AND
r.c_id = $course_id";
$rs_max = Database::query($sql);
$row_max = Database::fetch_object($rs_max);
$max_position = $row_max->max_position + 1;
$params = [
'c_id' => $course_id,
'question' => $question_name,
'description' => $question_description,
'ponderation' => $max_score,
'position' => $max_position,
'type' => $type,
'level' => $level,
];
$question_id = Database::insert($tbl_quiz_question, $params);
if ($question_id) {
$sql = "UPDATE $tbl_quiz_question
SET id = iid WHERE iid = $question_id";
Database::query($sql);
// Get the max question_order
$sql = "SELECT max(question_order) as max_order
FROM $tbl_quiz_rel_question
WHERE c_id = $course_id AND exercice_id = $quiz_id ";
$rs_max_order = Database::query($sql);
$row_max_order = Database::fetch_object($rs_max_order);
$max_order = $row_max_order->max_order + 1;
// Attach questions to quiz
$sql = "INSERT INTO $tbl_quiz_rel_question (c_id, question_id, exercice_id, question_order)
VALUES($course_id, $question_id, $quiz_id, $max_order)";
Database::query($sql);
}
return $question_id;
}
/**
* @return array the image filename of the question type
*/
public function get_type_icon_html()
{
$type = $this->selectType();
$tabQuestionList = self::get_question_type_list(); // [0]=file to include [1]=type name
require_once $tabQuestionList[$type][0];
$img = $explanation = null;
eval('$img = '.$tabQuestionList[$type][1].'::$typePicture;');
eval('$explanation = get_lang('.$tabQuestionList[$type][1].'::$explanationLangVar);');
return array($img, $explanation);
}
/**
* Get course medias
* @param int course id
* @param integer $course_id
*
* @return array
*/
public static function get_course_medias(
$course_id,
$start = 0,
$limit = 100,
$sidx = "question",
$sord = "ASC",
$where_condition = []
) {
$table_question = Database::get_course_table(TABLE_QUIZ_QUESTION);
$default_where = array(
'c_id = ? AND parent_id = 0 AND type = ?' => array(
$course_id,
MEDIA_QUESTION
)
);
$result = Database::select(
'*',
$table_question,
array(
'limit' => " $start, $limit",
'where' => $default_where,
'order' => "$sidx $sord"
)
);
return $result;
}
/**
* Get count course medias
* @param int course id
*
* @return int
*/
public static function get_count_course_medias($course_id)
{
$table_question = Database::get_course_table(TABLE_QUIZ_QUESTION);
$result = Database::select(
'count(*) as count',
$table_question,
array(
'where' => array(
'c_id = ? AND parent_id = 0 AND type = ?' => array(
$course_id,
MEDIA_QUESTION,
),
)
),
'first'
);
if ($result && isset($result['count'])) {
return $result['count'];
}
return 0;
}
/**
* @param int $course_id
* @return array
*/
public static function prepare_course_media_select($course_id)
{
$medias = self::get_course_medias($course_id);
$media_list = array();
$media_list[0] = get_lang('NoMedia');
if (!empty($medias)) {
foreach ($medias as $media) {
$media_list[$media['id']] = empty($media['question']) ? get_lang('Untitled') : $media['question'];
}
}
return $media_list;
}
/**
* @return integer[]
*/
public static function get_default_levels()
{
$select_level = array(
1 => 1,
2 => 2,
3 => 3,
4 => 4,
5 => 5
);
return $select_level;
}
/**
* @return string
*/
public function show_media_content()
{
$html = '';
if ($this->parent_id != 0) {
$parent_question = self::read($this->parent_id);
$html = $parent_question->show_media_content();
} else {
$html .= Display::page_subheader($this->selectTitle());
$html .= $this->selectDescription();
}
return $html;
}
/**
* Swap between unique and multiple type answers
* @return UniqueAnswer|MultipleAnswer
*/
public function swapSimpleAnswerTypes()
{
$oppositeAnswers = array(
UNIQUE_ANSWER => MULTIPLE_ANSWER,
MULTIPLE_ANSWER => UNIQUE_ANSWER
);
$this->type = $oppositeAnswers[$this->type];
Database::update(
Database::get_course_table(TABLE_QUIZ_QUESTION),
array('type' => $this->type),
array('c_id = ? AND id = ?' => array($this->course['real_id'], $this->id))
);
$answerClasses = array(
UNIQUE_ANSWER => 'UniqueAnswer',
MULTIPLE_ANSWER => 'MultipleAnswer'
);
$swappedAnswer = new $answerClasses[$this->type];
foreach ($this as $key => $value) {
$swappedAnswer->$key = $value;
}
return $swappedAnswer;
}
/**
* @param array $score
* @return bool
*/
public function isQuestionWaitingReview($score)
{
$isReview = false;
if (!empty($score)) {
if (!empty($score['comments']) || $score['score'] > 0) {
$isReview = true;
}
}
return $isReview;
}
/**
* @param string $value
*/
public function setFeedback($value)
{
$this->feedback = $value;
}
/**
* @param Exercise $exercise
* @return bool
*/
public function showFeedback($exercise)
{
return
in_array($this->type, $this->questionTypeWithFeedback) &&
$exercise->feedback_type != EXERCISE_FEEDBACK_TYPE_EXAM;
}
/**
* @return string
*/
public function returnFormatFeedback()
{
return Display::return_message($this->feedback, 'normal', false);
}
}