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Chamilo is a learning management system focused on ease of use and accessibility
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chamilo-lms/main/exercice/question.class.php

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<?php
/* For licensing terms, see /license.txt */
/**
* File containing the Question class.
* @package chamilo.exercise
* @author Olivier Brouckaert
* @author Julio Montoya <gugli100@gmail.com> lot of bug fixes
* Modified by hubert.borderiou@grenet.fr - add question categories
*/
/**
* Code
*/
/**
* QUESTION CLASS
*
* This class allows to instantiate an object of type Question
*
* @author Olivier Brouckaert, original author
* @author Patrick Cool, LaTeX support
* @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 $isContent;
public $course;
public static $typePicture = 'new_question.png';
public static $explanationLangVar = '';
public $question_table_class = 'table table-striped';
public $editionMode = 'normal';
public $exercise; // exercise obj
public $setDefaultValues = false;
public $submitClass;
public $submitText;
public $setDefaultQuestionValues = false;
public $c_id = null;
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'),
MEDIA_QUESTION => array('media_question.class.php', 'MediaQuestion'),
UNIQUE_ANSWER_IMAGE => array('unique_answer_image.class.php', 'UniqueAnswerImage'),
DRAGGABLE => array('draggable.class.php', 'Draggable')
);
/**
* constructor of the class
*
* @author - Olivier Brouckaert
*/
public function Question()
{
$this->id = 0;
$this->question = '';
$this->description = '';
$this->weighting = 0;
$this->position = 1;
$this->picture = '';
$this->level = 1;
// 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;
$this->editionMode = 'normal';
}
public function getIsContent()
{
$isContent = null;
if (isset($_REQUEST['isContent'])) {
$isContent = intval($_REQUEST['isContent']);
}
return $this->isContent = $isContent;
}
/**
* @param string $title
* @param int $course_id
* @return mixed|bool
*/
public function readByTitle($title, $course_id = null)
{
if (!empty($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'];
$TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION);
$title = Database::escape_string($title);
$sql = "SELECT iid FROM $TBL_QUESTIONS WHERE question = '$title' AND c_id = $course_id ";
$result = Database::query($sql);
if (Database::num_rows($result)) {
$row = Database::fetch_array($result);
return self::read($row['iid'], $course_id);
}
return false;
}
/**
* Reads question informations from the data base
*
* @author Olivier Brouckaert
* @param int $id - question ID
* @param int $course_id
* @param Exercise
*
* @return boolean - true if question exists, otherwise false
*/
public static function read($id, $course_id = null, Exercise $exercise = 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_EXERCICE_QUESTION = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
$sql = "SELECT * FROM $TBL_QUESTIONS WHERE iid = $id";
$result = Database::query($sql);
// if the question has been found
if ($object = Database::fetch_object($result)) {
$objQuestion = Question::getInstance($object->type);
if (!empty($objQuestion)) {
$objQuestion->id = $id;
$objQuestion->question = $object->question;
$objQuestion->description = $object->description;
$objQuestion->weighting = $object->ponderation;
$objQuestion->position = $object->position;
$objQuestion->type = $object->type;
$objQuestion->picture = $object->picture;
$objQuestion->level = (int)$object->level;
$objQuestion->extra = $object->extra;
$objQuestion->course = $course_info;
$objQuestion->parent_id = $object->parent_id;
$objQuestion->category_list = Testcategory::getCategoryForQuestion($id);
$objQuestion->exercise = $exercise;
$objQuestion->c_id = $object->c_id;
$sql = "SELECT exercice_id FROM $TBL_EXERCICE_QUESTION WHERE question_id = $id";
$result_exercise_list = Database::query($sql);
// fills the array with the exercises which this question is in
if ($result_exercise_list) {
while ($obj = Database::fetch_object($result_exercise_list)) {
$objQuestion->exerciseList[] = $obj->exercice_id;
}
}
return $objQuestion;
}
}
// question not found
return false;
}
public function setEditionMode($mode)
{
$this->editionMode = $mode;
}
public function getEditionMode()
{
return $this->editionMode;
}
/**
* Returns the question ID
*
* @author - Olivier Brouckaert
* @return int - question ID
*/
public function selectId()
{
return $this->id;
}
/**
* Returns the question title
*
* @author - Olivier Brouckaert
* @return string - question title
*/
public function selectTitle()
{
return $this->question;
}
/**
* returns the question description
*
* @author - Olivier Brouckaert
* @return string - question description
*/
public function selectDescription()
{
$this->description = $this->description;
return $this->description;
}
/**
* returns the question weighting
*
* @author - Olivier Brouckaert
* @return int - question weighting
*/
public function selectWeighting()
{
return $this->weighting;
}
/**
* returns the question position
*
* @author - Olivier Brouckaert
* @return int - question position
*/
public function selectPosition()
{
return $this->position;
}
/**
* returns the answer type
*
* @author - Olivier Brouckaert
* @return int - answer type
*/
public function selectType()
{
return $this->type;
}
/**
* returns the level of the question
*
* @author - Nicolas Raynaud
* @return int - level of the question, 0 by default.
*/
public function selectLevel()
{
return $this->level;
}
/**
* returns the picture name
*
* @author - Olivier Brouckaert
* @return string - picture name
*/
public function selectPicture()
{
return $this->picture;
}
public function selectPicturePath()
{
if (!empty($this->picture)) {
return api_get_path(WEB_COURSE_PATH).$this->course['path'].'/document/images/'.$this->picture;
}
return false;
}
/**
* 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);
}
/**
* @param $course_id
*/
public function updateCourse($course_id)
{
$this->course = api_get_course_info_by_id($course_id);
}
/**
* changes the question title
*
* @author - Olivier Brouckaert
* @param - string $title - question title
*/
public function updateTitle($title)
{
$this->question = $title;
}
public function updateParentId($id)
{
$this->parent_id = intval($id);
}
/**
* changes the question description
*
* @author - Olivier Brouckaert
* @param - string $description - question description
*/
public function updateDescription($description)
{
$this->description = $description;
}
/**
* changes the question weighting
*
* @author Olivier Brouckaert
* @param integer $weighting - question weighting
*/
public function updateWeighting($weighting)
{
$this->weighting = $weighting;
}
/**
* @author Hubert Borderiou 12-10-2011
* @param array of category $in_category
*/
public function updateCategory($category_list)
{
$this->category_list = $category_list;
}
/**
* @author Hubert Borderiou 12-10-2011
* @param interger $in_positive
*/
public function updateScoreAlwaysPositive($in_positive)
{
$this->scoreAlwaysPositive = $in_positive;
}
/**
* @author Hubert Borderiou 12-10-2011
* @param interger $in_positive
*/
public function updateUncheckedMayScore($in_positive)
{
$this->uncheckedMayScore = $in_positive;
}
/**
* Save category of a question
*
* A question can have n categories
* if category is empty, then question has no category then delete the category entry
*
* @param array category list
* @author Julio Montoya - Adding multiple cat support
*/
public function saveCategories($category_list)
{
$course_id = $this->course['real_id'];
if (!empty($category_list)) {
$this->deleteCategory();
$TBL_QUESTION_REL_CATEGORY = Database::get_course_table(TABLE_QUIZ_QUESTION_REL_CATEGORY);
$category_list = array_filter($category_list);
// update or add category for a question
foreach ($category_list as $category_id) {
if (empty($category_id)) {
continue;
}
$category_id = intval($category_id);
$question_id = Database::escape_string($this->id);
$sql = "SELECT count(*) AS nb FROM $TBL_QUESTION_REL_CATEGORY
WHERE category_id = $category_id AND question_id = $question_id AND c_id=".$course_id;
$res = Database::query($sql);
$row = Database::fetch_array($res);
if ($row['nb'] > 0) {
//DO nothing
//$sql = "UPDATE $TBL_QUESTION_REL_CATEGORY SET category_id = $category_id WHERE question_id=$question_id AND c_id=".api_get_course_int_id();
//$res = Database::query($sql);
} else {
$sql = "INSERT INTO $TBL_QUESTION_REL_CATEGORY (c_id, question_id, category_id) VALUES (".$course_id.", $question_id, $category_id)";
Database::query($sql);
}
}
} else {
$this->deleteCategory();
}
}
/**
* @author - Hubert Borderiou 12-10-2011
* @param - interger $in_positive
* in this version, a question can only have 1 category
* if category is 0, then question has no category then delete the category entry
*/
public function saveCategory($in_category)
{
if ($in_category <= 0) {
$this->deleteCategory();
} else {
// update or add category for a question
$TBL_QUESTION_REL_CATEGORY = Database::get_course_table(TABLE_QUIZ_QUESTION_REL_CATEGORY);
$category_id = Database::escape_string($in_category);
$question_id = Database::escape_string($this->id);
$sql = "SELECT count(*) AS nb FROM $TBL_QUESTION_REL_CATEGORY WHERE 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) {
$sql = "UPDATE $TBL_QUESTION_REL_CATEGORY SET category_id= $category_id
WHERE question_id=$question_id AND c_id=".api_get_course_int_id();
Database::query($sql);
} else {
$sql = "INSERT INTO $TBL_QUESTION_REL_CATEGORY VALUES (".api_get_course_int_id().", $question_id, $category_id)";
Database::query($sql);
}
}
}
/**
* Deletes any category entry for question id
* @author hubert borderiou 12-10-2011
*/
public function deleteCategory()
{
$course_id = $this->course['real_id'];
$TBL_QUESTION_REL_CATEGORY = Database::get_course_table(TABLE_QUIZ_QUESTION_REL_CATEGORY);
$question_id = Database::escape_string($this->id);
$sql = "DELETE FROM $TBL_QUESTION_REL_CATEGORY WHERE question_id = $question_id AND c_id = ".$course_id;
Database::query($sql);
}
/**
* Changes the question position
*
* @author Olivier Brouckaert
* @param integer $position - question position
*/
public function updatePosition($position)
{
$this->position = $position;
}
/**
* Changes the question level
*
* @author Nicolas Raynaud
* @param integer $level - question level
*/
public function updateLevel($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
*
* @author Olivier Brouckaert
* @param integer $type - answer type
*/
public function updateType($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 $TBL_REPONSES WHERE question_id='".Database::escape_string($this->id)."'";
Database::query($sql);
}
$this->type = $type;
}
}
/**
* Adds a picture to the question
*
* @author Olivier Brouckaert
* @param string $Picture - temporary path of the picture to upload
* @param string $PictureName - Name of the picture
* @param string
* @return bool - true if uploaded, otherwise false
*/
public function uploadPicture($Picture, $PictureName, $picturePath = null)
{
if (empty($picturePath)) {
global $picturePath;
}
if (!file_exists($picturePath)) {
if (mkdir($picturePath, api_get_permissions_for_new_directories())) {
// document path
$documentPath = api_get_path(SYS_COURSE_PATH).$this->course['path']."/document";
$path = str_replace($documentPath, '', $picturePath);
$title_path = basename($picturePath);
$doc_id = FileManager::add_document($this->course, $path, 'folder', 0, $title_path);
api_item_property_update($this->course, TOOL_DOCUMENT, $doc_id, 'FolderCreated', api_get_user_id());
}
}
// if the question has got an ID
if ($this->id) {
$extension = pathinfo($PictureName, PATHINFO_EXTENSION);
$this->picture = 'quiz-'.$this->id.'.jpg';
$o_img = new Image($Picture);
$o_img->send_image($picturePath.'/'.$this->picture, -1, 'jpg');
$document_id = FileManager::add_document(
$this->course,
'/images/'.$this->picture,
'file',
filesize($picturePath.'/'.$this->picture),
$this->picture
);
if ($document_id) {
return api_item_property_update(
$this->course,
TOOL_DOCUMENT,
$document_id,
'DocumentAdded',
api_get_user_id()
);
}
}
return false;
}
/**
* Resizes a picture || Warning!: can only be called after uploadPicture, or if picture is already available in object.
*
* @author - Toon Keppens
* @param string $Dimension - Resizing happens proportional according to given dimension: height|width|any
* @param integer $Max - Maximum size
* @return boolean - true if success, false if failed
*/
public function resizePicture($Dimension, $Max)
{
global $picturePath;
// if the question has an ID
if ($this->id) {
// Get dimensions from current image.
$my_image = new Image($picturePath.'/'.$this->picture);
$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_height = $Max;
$new_width = ceil($current_width / $resize_scale);
}
// Resize according to width
if ($Dimension == "width") {
$resize_scale = $current_width / $Max;
$new_width = $Max;
$new_height = ceil($current_height / $resize_scale);
}
// 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_height = $Max;
$new_width = ceil($current_width / $resize_scale);
}
if ($current_height < $current_width) {
$resize_scale = $current_width / $Max;
$new_width = $Max;
$new_height = ceil($current_height / $resize_scale);
}
}
$my_image->resize($new_width, $new_height);
$result = $my_image->send_image($picturePath.'/'.$this->picture);
if ($result) {
return true;
} else {
return false;
}
}
}
/**
* Deletes the picture
*
* @author Olivier Brouckaert
* @return boolean - true if removed, otherwise false
*/
public function removePicture()
{
global $picturePath;
// if the question has got an ID and if the picture exists
if ($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 $questionId - ID of the target question
* @return boolean - true if copied, otherwise false
*/
public function exportPicture($questionId, $course_info)
{
$course_id = $course_info['real_id'];
$TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION);
$destination_path = api_get_path(SYS_COURSE_PATH).$course_info['path'].'/document/images';
$source_path = api_get_path(SYS_COURSE_PATH).$this->course['path'].'/document/images';
// if the question has got an ID and if the picture exists
if ($this->id && !empty($this->picture)) {
$picture = explode('.', $this->picture);
$extension = $picture[sizeof($picture) - 1];
$picture = 'quiz-'.$questionId.'.'.$extension;
$result = @copy($source_path.'/'.$this->picture, $destination_path.'/'.$picture) ? true : false;
//If copy was correct then add to the database
if ($result) {
$sql = "UPDATE $TBL_QUESTIONS SET picture='".Database::escape_string($picture)."'
WHERE c_id = $course_id AND iid='".intval($questionId)."'";
Database::query($sql);
$document_id = FileManager::add_document(
$course_info,
'/images/'.$picture,
'file',
filesize($destination_path.'/'.$picture),
$picture
);
if ($document_id) {
return api_item_property_update(
$course_info,
TOOL_DOCUMENT,
$document_id,
'DocumentAdded',
api_get_user_id()
);
}
}
return $result;
}
return false;
}
/**
* 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 $PictureName - Name of the picture
*/
function setTmpPicture($Picture, $PictureName)
{
global $picturePath;
$PictureName = explode('.', $PictureName);
$Extension = $PictureName[sizeof($PictureName) - 1];
// saves the picture into a temporary file
@move_uploaded_file($Picture, $picturePath.'/tmp.'.$Extension);
}
/**
Sets the title
*/
public function setTitle($title)
{
$this->question = $title;
}
/**
Sets the title
*/
public function setExtra($extra)
{
$this->extra = $extra;
}
/**
* Moves the temporary question "tmp" to "quiz-$questionId"
* 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
* @return boolean - true if moved, otherwise false
*/
public function getTmpPicture()
{
global $picturePath;
// if the question has got an ID and if the picture exists
if ($this->id) {
if (file_exists($picturePath.'/tmp.jpg')) {
$Extension = 'jpg';
} elseif (file_exists($picturePath.'/tmp.gif')) {
$Extension = 'gif';
} elseif (file_exists($picturePath.'/tmp.png')) {
$Extension = 'png';
}
$this->picture = 'quiz-'.$this->id.'.'.$Extension;
return @rename($picturePath.'/tmp.'.$Extension, $picturePath.'/'.$this->picture) ? true : false;
}
return false;
}
/**
* 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 integer $exerciseId - exercise ID if saving in an exercise
*/
public function save($exerciseId = 0)
{
$TBL_EXERCICE_QUESTION = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
$TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION);
$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'];
$category_list = $this->category_list;
// Question already exists
if (!empty($id)) {
$sql = "UPDATE $TBL_QUESTIONS SET
question ='".Database::escape_string($question)."',
description ='".Database::escape_string($description)."',
ponderation ='".Database::escape_string($weighting)."',
position ='".Database::escape_string($position)."',
type ='".Database::escape_string($type)."',
picture ='".Database::escape_string($picture)."',
extra ='".Database::escape_string($extra)."',
level ='".Database::escape_string($level)."',
parent_id = ".$this->parent_id."
WHERE iid = '".Database::escape_string($id)."'";
//WHERE c_id = $c_id AND iid = '".Database::escape_string($id)."'";
Database::query($sql);
$this->saveCategories($category_list);
if (!empty($exerciseId)) {
api_item_property_update($this->course, TOOL_QUIZ, $id, 'QuizQuestionUpdated', api_get_user_id());
if (api_get_setting('search_enabled') == 'true') {
$this->search_engine_edit($exerciseId);
}
}
} else {
// Creates a new question
$sql = "SELECT max(position) FROM $TBL_QUESTIONS as question, $TBL_EXERCICE_QUESTION as test_question
WHERE question.iid = test_question.question_id AND
test_question.exercice_id = '".Database::escape_string($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;
$sql = "INSERT INTO $TBL_QUESTIONS (c_id, question, description, ponderation, position, type, picture, extra, level, parent_id) VALUES ( ".
" $c_id, ".
" '".Database::escape_string($question)."', ".
" '".Database::escape_string($description)."', ".
" '".Database::escape_string($weighting)."', ".
" '".Database::escape_string($position)."', ".
" '".Database::escape_string($type)."', ".
" '".Database::escape_string($picture)."', ".
" '".Database::escape_string($extra)."', ".
" '".Database::escape_string($level)."', ".
" '".$this->parent_id."' ".
" )";
Database::query($sql);
$this->id = Database::insert_id();
api_item_property_update($this->course, TOOL_QUIZ, $this->id, 'QuizQuestionAdded', api_get_user_id());
// If hotspot, create first answer
if ($type == HOT_SPOT || $type == HOT_SPOT_ORDER) {
$TBL_ANSWERS = Database::get_course_table(TABLE_QUIZ_ANSWER);
$sql = "INSERT INTO $TBL_ANSWERS (question_id , answer , correct , comment , ponderation , position , hotspot_coordinates , hotspot_type )
VALUES ('".Database::escape_string($this->id)."', '', NULL , '', '10' , '1', '0;0|0|0', 'square')";
Database::query($sql);
}
if ($type == HOT_SPOT_DELINEATION) {
$TBL_ANSWERS = Database::get_course_table(TABLE_QUIZ_ANSWER);
$sql = "INSERT INTO $TBL_ANSWERS (question_id , answer , correct , comment , ponderation , position , hotspot_coordinates , hotspot_type )
VALUES ('".Database::escape_string($this->id)."', '', NULL , '', '10' , '1', '0;0|0|0', 'delineation')";
Database::query($sql);
}
if (api_get_setting('search_enabled') == 'true') {
if ($exerciseId != 0) {
$this->search_engine_edit($exerciseId, true);
}
}
}
// if the question is created in an exercise
if ($exerciseId) {
// adds the exercise into the exercise list of this question
$this->addToList($exerciseId, true);
}
}
/**
* @param $exerciseId
* @param bool $addQs
* @param bool $rmQs
*/
public function search_engine_edit($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) {
require_once(api_get_path(LIBRARY_PATH).'search/ChamiloIndexer.class.php');
require_once(api_get_path(LIBRARY_PATH).'search/IndexableChunk.class.php');
$di = new ChamiloIndexer();
if ($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
$di->remove_document((int)$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 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 - coming from $this->save() or not
*/
public function addToList($exerciseId, $fromSave = false)
{
$TBL_EXERCICE_QUESTION = 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 $TBL_EXERCICE_QUESTION (c_id, question_id, exercice_id, question_order) VALUES
({$this->course['real_id']}, '".Database::escape_string($id)."','".Database::escape_string($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_EXERCICE_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_EXERCICE_QUESTION
WHERE c_id = $course_id AND question_id='".Database::escape_string($id)."' AND exercice_id='".Database::escape_string($exerciseId)."'";
$res = Database::query($sql);
if (Database::num_rows($res) > 0) {
$row = Database::fetch_array($res);
if (!empty($row['question_order'])) {
$sql = "UPDATE $TBL_EXERCICE_QUESTION SET question_order = question_order-1
WHERE c_id = $course_id AND exercice_id='".Database::escape_string($exerciseId)."' AND question_order > ".$row['question_order'];
Database::query($sql);
}
}
$sql = "DELETE FROM $TBL_EXERCICE_QUESTION
WHERE c_id = $course_id AND question_id='".Database::escape_string($id)."' AND exercice_id='".Database::escape_string($exerciseId)."'";
Database::query($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_EXERCICE_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 = $this->id;
if ($this->type == MEDIA_QUESTION) {
// Removing media for attached questions
$sql = "UPDATE $TBL_QUESTIONS SET parent_id = '' WHERE parent_id = $id";
Database::query($sql);
$sql = "DELETE FROM $TBL_QUESTIONS WHERE c_id = $course_id AND iid='".Database::escape_string($id)."'";
Database::query($sql);
return true;
}
// if the question must be removed from all exercises
if (!$deleteFromEx) {
//update the question_order of each question to avoid inconsistencies
$sql = "SELECT exercice_id, question_order FROM $TBL_EXERCICE_QUESTION
WHERE c_id = $course_id AND question_id='".Database::escape_string($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_EXERCICE_QUESTION
SET question_order = question_order - 1
WHERE c_id = $course_id AND
exercice_id='".Database::escape_string($row['exercice_id'])."' AND
question_order > ".$row['question_order'];
Database::query($sql);
}
}
}
$sql = "DELETE FROM $TBL_EXERCICE_QUESTION WHERE c_id = $course_id AND question_id='".Database::escape_string($id)."'";
Database::query($sql);
$sql = "DELETE FROM $TBL_QUESTIONS WHERE c_id = $course_id AND iid='".Database::escape_string($id)."'";
Database::query($sql);
$sql = "DELETE FROM $TBL_REPONSES WHERE question_id='".Database::escape_string($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 = $course_id AND question_id='".Database::escape_string($id)."' AND c_id=".api_get_course_int_id();
Database::query($sql);
api_item_property_update($this->course, TOOL_QUIZ, $id, 'QuizQuestionDeleted', api_get_user_id());
$this->removePicture();
// resets the object
$this->Question();
} 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, $id, 'QuizQuestionDeleted', api_get_user_id());
}
}
/**
* Duplicates the question
*
* @author Olivier Brouckaert
* @param array Course info of the destination course
* @return int ID of the new question
*/
public function duplicate($course_info = null)
{
if (empty($course_info)) {
$course_info = $this->course;
}
$TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION);
$TBL_QUESTION_OPTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION_OPTION);
$question = $this->question;
$description = $this->description;
//Using the same method used in the course copy to transform URLs
if ($this->course['id'] != $course_info['id']) {
$description = DocumentManager::replace_urls_inside_content_html_from_copy_course(
$description,
$this->course['id'],
$course_info['id']
);
$question = DocumentManager::replace_urls_inside_content_html_from_copy_course(
$question,
$this->course['id'],
$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 = array(
'c_id' => $course_id,
'question' => $question,
'description' => $description,
'ponderation' => $this->weighting,
'position' => $this->position,
'type' => $this->type,
'level' => $this->level,
'extra' => $this->extra,
'parent_id' => $this->parent_id,
);
$new_question_id = Database::insert($TBL_QUESTIONS, $params);
if (!empty($options)) {
//Saving the quiz_options
foreach ($options as $item) {
$item['question_id'] = $new_question_id;
$item['c_id'] = $course_id;
unset($item['iid']);
Database::insert($TBL_QUESTION_OPTIONS, $item);
}
}
$this->duplicate_category_question($new_question_id, $course_id);
// Duplicates the picture of the hotspot
$this->exportPicture($new_question_id, $course_info);
return $new_question_id;
}
public function get_categories_from_question()
{
return Testcategory::getCategoryForQuestion($this->id);
}
public function duplicate_category_question($question_id, $course_id)
{
$question = Question::read($question_id, $course_id);
$categories = $this->get_categories_from_question();
if (!empty($categories)) {
$question->saveCategories($categories);
}
}
public function get_question_type_name()
{
$key = self::$questionTypes[$this->type];
return get_lang($key[1]);
}
public static function get_question_type($type)
{
if ($type == ORAL_EXPRESSION && api_get_setting('enable_nanogong') != 'true') {
return null;
}
return self::$questionTypes[$type];
}
public static function get_question_type_list()
{
if (api_get_setting('enable_nanogong') != 'true') {
self::$questionTypes[ORAL_EXPRESSION] = null;
unset(self::$questionTypes[ORAL_EXPRESSION]);
}
return self::$questionTypes;
}
/**
* Returns an instance of the class corresponding to the type
* @param integer $type the type of the question
* @param \Exercise
* @return \Question an instance of a Question subclass (or of Questionc class by default)
*/
public static function getInstance($type, Exercise $exercise = null)
{
if (!is_null($type)) {
list($file_name, $class_name) = self::get_question_type($type);
if (!empty($file_name)) {
include_once $file_name;
if (class_exists($class_name)) {
$obj = new $class_name();
$obj->exercise = $exercise;
return $obj;
} else {
echo 'Can\'t instanciate class '.$class_name.' of type '.$type;
}
}
}
return null;
}
/**
* Creates the form to create / edit a question
* A subclass can redifine this function to add fields...
*
* @param \FormValidator $form the formvalidator instance (by reference)
* @param array $fck_config
*/
public function createForm(&$form, $fck_config = array())
{
$maxCategories = 1;
$url = api_get_path(WEB_AJAX_PATH).'exercise.ajax.php?1=1';
$js = null;
if ($this->type != MEDIA_QUESTION) {
$js = '<script>
function check() {
var counter = 0;
$("#category_id option:selected").each(function() {
var id = $(this).val();
var name = $(this).text();
if (id != "" ) {
// if a media question was selected
$("#parent_id option:selected").each(function() {
var questionId = $(this).val();
if (questionId != 0) {
if (counter >= 1) {
alert("'.addslashes(get_lang('YouCantAddAnotherCategory')).'");
$("#category_id").trigger("removeItem",[{ "value" : id}]);
return;
}
}
});
$.ajax({
async: false,
url: "'.$url.'&a=exercise_category_exists",
data: "id="+id,
success: function(return_value) {
if (return_value == 0 ) {
alert("'.addslashes(get_lang('CategoryDoesNotExists')).'");
// Deleting select option tag
$("#category_id").find("option").remove();
$(".holder li").each(function () {
if ($(this).attr("rel") == id) {
$(this).remove();
}
});
}
},
});
}
counter++;
});
}
$(function() {
$("#category_id").fcbkcomplete({
json_url: "'.$url.'&a=search_category_parent&type=all&",
maxitems: "'.$maxCategories.'" ,
addontab: false,
input_min_size: 1,
cache: false,
complete_text:"'.get_lang('StartToType').'",
firstselected: false,
onselect: check,
filter_selected: true,
newel: true
});
// Change select media
$("#parent_id").change(function(){
$("#parent_id option:selected").each(function() {
var questionId = $(this).val();
if (questionId != 0) {
$.ajax({
async: false,
dataType: "json",
url: "'.$url.'&a=get_categories_by_media&questionId='.$this->id.'&exerciseId='.$this->exercise->id.'",
data: "mediaId="+questionId,
success: function(data) {
if (data != -1) {
var all = $("#category_id").trigger("selectAll");
all.each(function(index, value) {
var selected = $(value).find("option:selected");
selected.each(function( indexSelect, valueSelect) {
valueToRemove = $(valueSelect).val();
$("#category_id").trigger("removeItem",[{ "value" : valueToRemove}]);
});
});
if (data != 0) {
$("#category_id").trigger("addItem",[{"title": data.title, "value": data.value}]);
}
}
},
});
} else {
// Removes all items
var all = $("#category_id").trigger("selectAll");
all.each(function(index, value) {
var selected = $(value).find("option:selected");
selected.each(function( indexSelect, valueSelect) {
valueToRemove = $(valueSelect).val();
$("#category_id").trigger("removeItem", [{ "value" : valueToRemove}]);
});
});
}
});
});
});
// hub 13-12-2010
function visiblerDevisibler(in_id) {
if (document.getElementById(in_id)) {
if (document.getElementById(in_id).style.display == "none") {
document.getElementById(in_id).style.display = "block";
if (document.getElementById(in_id+"Img")) {
document.getElementById(in_id+"Img").html = "'.addslashes(Display::return_icon('div_hide.gif')).'";
}
} else {
document.getElementById(in_id).style.display = "none";
if (document.getElementById(in_id+"Img")) {
document.getElementById(in_id+"Img").html = "dsdsds'.addslashes(Display::return_icon('div_show.gif')).'";
}
}
}
}
</script>';
$form->addElement('html', $js);
}
// question name
$form->addElement('text', 'questionName', get_lang('Question'), array('class' => 'span6'));
$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']) : $this->selectType();
$form->addElement('hidden', 'answerType', $answerType);
// html editor
$editor_config = array('ToolbarSet' => 'TestQuestionDescription', 'Width' => '100%', 'Height' => '150');
if (is_array($fck_config)) {
$editor_config = array_merge($editor_config, $fck_config);
}
if (!api_is_allowed_to_edit(null, true)) {
$editor_config['UserStatus'] = 'student';
}
$form->add_html_editor('questionDescription', get_lang('QuestionDescription'), false, false, $editor_config);
// hidden values
$my_id = isset($_REQUEST['myid']) ? intval($_REQUEST['myid']) : null;
$form->addElement('hidden', 'myid', $my_id);
if ($this->type != MEDIA_QUESTION) {
if ($this->exercise->fastExerciseEdition == false) {
// Advanced parameters
$form->addElement('advanced_settings', '<a class="btn btn-show advanced_parameters" id="advanced_params" href="javascript://">'.get_lang('AdvancedParameters').'</a>');
$form->addElement('html', '<div id="advanced_params_options" style="display:none;">');
}
// Level (difficulty).
$select_level = Question::get_default_levels();
$form->addElement('select', 'questionLevel', get_lang('Difficulty'), $select_level);
// Media question.
$course_medias = Question::prepare_course_media_select(api_get_course_int_id());
$form->addElement('select', 'parent_id', get_lang('AttachToMedia'), $course_medias, array('id' => 'parent_id'));
// Categories.
$categoryJS = null;
if (!empty($this->category_list)) {
$trigger = '';
foreach ($this->category_list as $category_id) {
if (!empty($category_id)) {
$cat = new Testcategory($category_id);
if ($cat->id) {
$trigger .= '$("#category_id").trigger("addItem",[{"title": "'.$cat->parent_path.'", "value": "'.$cat->id.'"}]);';
}
}
}
$categoryJS .= '<script>$(function() { '.$trigger.' });</script>';
}
$form->addElement('html', $categoryJS);
$form->addElement(
'select',
'questionCategory',
get_lang('Category'),
array(),
array('id' => 'category_id')
);
// Extra fields. (Injecting question extra fields!)
$extraFields = new ExtraField('question');
$extraFields->addElements($form, $this->id);
if ($this->exercise->fastExerciseEdition == false) {
$form->addElement('html', '</div>');
}
}
// @todo why we need this condition??
if ($this->setDefaultQuestionValues) {
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;
}
}
// default values
$defaults = array();
$defaults['questionName'] = $this->question;
$defaults['questionDescription'] = $this->description;
$defaults['questionLevel'] = $this->level;
$defaults['questionCategory'] = $this->category_list;
$defaults['parent_id'] = $this->parent_id;
//Came from he question pool
if (isset($_GET['fromExercise'])) {
$form->setDefaults($defaults);
}
if (!empty($_REQUEST['myid'])) {
$form->setDefaults($defaults);
} else {
if ($isContent == 1) {
$form->setDefaults($defaults);
}
}
if ($this->setDefaultValues) {
$form->setDefaults($defaults);
}
}
/**
* function which process the creation of questions
* @param FormValidator $form the formvalidator instance
* @param Exercise $objExercise the Exercise instance
*/
public function processCreation($form, $objExercise = null)
{
$this->updateParentId($form->getSubmitValue('parent_id'));
$this->updateTitle($form->getSubmitValue('questionName'));
$this->updateDescription($form->getSubmitValue('questionDescription'));
$this->updateLevel($form->getSubmitValue('questionLevel'));
$this->updateCategory($form->getSubmitValue('questionCategory'));
// Save normal question if NOT media
if ($this->type != MEDIA_QUESTION) {
$this->save($objExercise->id);
$field_value = new ExtraFieldValue('question');
$params = $form->exportValues();
$params['question_id'] = $this->id;
$field_value->save_field_values($params);
if ($objExercise) {
// modify the exercise
$objExercise->addToList($this->id);
$objExercise->update_question_positions();
}
}
}
/**
* abstract function which creates the form to create / edit the answers of the question
* @param the formvalidator instance
*/
abstract function createAnswersForm($form);
/**
* abstract function which process the creation of answers
* @param the formvalidator instance
*/
abstract function processAnswersCreation($form);
/**
* Displays the menu of question types
*/
public static function display_type_menu($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 '<div class="actionsbig">';
echo '<ul class="question_menu">';
foreach ($question_type_custom_list as $i => $a_type) {
// include the class of the type
require_once $a_type[0];
// get the picture of the type and the langvar which describes it
$img = $explanation = '';
eval('$img = '.$a_type[1].'::$typePicture;');
eval('$explanation = get_lang('.$a_type[1].'::$explanationLangVar);');
echo '<li>';
echo '<div class="icon_image_content">';
if ($objExercise->exercise_was_added_in_lp == true) {
$img = pathinfo($img);
$img = $img['filename'].'_na.'.$img['extension'];
echo Display::return_icon($img, $explanation, array(), ICON_SIZE_BIG);
} else {
echo '<a href="admin.php?'.api_get_cidreq(
).'&newQuestion=yes&answerType='.$i.'&exerciseId='.$exerciseId.'">'.Display::return_icon(
$img,
$explanation,
array(),
ICON_SIZE_BIG
).'</a>';
}
echo '</div>';
echo '</li>';
}
echo '<li>';
echo '<div class="icon_image_content">';
if ($objExercise->exercise_was_added_in_lp == true) {
echo Display::return_icon('database_na.png', get_lang('GetExistingQuestion'));
} else {
if ($feedback_type == 1) {
//echo $url = '<a href="question_pool.php?'.api_get_cidreq().'&type=1&fromExercise='.$exerciseId.'">';
} else {
//echo $url = '<a href="question_pool.php?'.api_get_cidreq().'&fromExercise='.$exerciseId.'">';
}
echo $url = '<a href="'.api_get_path(WEB_PUBLIC_PATH).'courses/'.api_get_course_path().'/'.api_get_session_id().'/exercise/'.$exerciseId.'/question-pool">';
echo Display::return_icon('database.png', get_lang('GetExistingQuestion'));
}
echo '</a>';
echo '</div></li>';
echo '</ul>';
echo '</div>';
}
public static function saveQuestionOption($question_id, $name, $course_id, $position = 0)
{
$TBL_EXERCICE_QUESTION_OPTION = 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);
$last_id = Database::insert($TBL_EXERCICE_QUESTION_OPTION, $params);
return $last_id;
}
public static function deleteAllQuestionOptions($question_id, $course_id)
{
$TBL_EXERCICE_QUESTION_OPTION = Database::get_course_table(TABLE_QUIZ_QUESTION_OPTION);
Database::delete(
$TBL_EXERCICE_QUESTION_OPTION,
array('c_id = ? AND question_id = ?' => array($course_id, $question_id))
);
}
public static function updateQuestionOption($id, $params, $course_id)
{
$TBL_EXERCICE_QUESTION_OPTION = Database::get_course_table(TABLE_QUIZ_QUESTION_OPTION);
$result = Database::update($TBL_EXERCICE_QUESTION_OPTION, $params, array('c_id = ? AND id = ?' => array($course_id, $id)));
return $result;
}
public static function readQuestionOption($question_id, $course_id)
{
$TBL_EXERCICE_QUESTION_OPTION = Database::get_course_table(TABLE_QUIZ_QUESTION_OPTION);
$result = Database::select('*', $TBL_EXERCICE_QUESTION_OPTION, array(
'where' => array(
'c_id = ? AND question_id = ?' => array($course_id, $question_id)),
'order' => 'iid ASC'
)
);
if (!empty($result)) {
$new_result = array();
foreach ($result as $item) {
$new_result[$item['iid']] = $item;
}
return $new_result;
}
return array();
}
/**
* Shows question title an description
*
* @param int $feedback_type
* @param int $counter
* @param type $score
* @param bool $show_media
*
* @return string
*/
public function return_header($feedback_type = null, $counter = null, $score = null, $show_media)
{
$counterLabel = '';
if (!empty($counter)) {
$counterLabel = $counter;
}
$score_label = get_lang('Wrong');
$class = 'error';
if ($score['pass'] == true) {
$score_label = get_lang('Correct');
$class = 'success';
}
if ($this->type == FREE_ANSWER || $this->type == ORAL_EXPRESSION) {
if ($score['revised'] == true) {
$score_label = get_lang('Revised');
$class = '';
} else {
$score_label = get_lang('NotRevised');
$class = 'error';
}
}
$question_title = $this->question;
$header = null;
// Display question category, if any
if ($show_media) {
$header .= $this->show_media_content();
}
$header .= Display::page_subheader2($counterLabel.". ".$question_title);
$header .= Display::div(
'<div class="rib rib-'.$class.'"><h3>'.$score_label.'</h3></div><h4>'.$score['result'].' </h4>',
array('class' => 'ribbon')
);
$header .= Display::div($this->description, array('id' => 'question_description'));
return $header;
}
/**
* Create a question from a set of parameters
* @param int Quiz ID
* @param string Question name
* @param int Maximum result for the question
* @param int Type of question (see constants at beginning of question.class.php)
* @param int Question level/category
*/
public function create_question($quiz_id, $question_name, $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.iid = 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;
// Insert the new question
$sql = "INSERT INTO $tbl_quiz_question (c_id, question, ponderation, position, type, level)
VALUES ($course_id, '".Database::escape_string($question_name)."', '$max_score', $max_position, $type, $level)";
Database::query($sql);
// Get the question ID
$question_id = Database::get_last_insert_id();
// 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 the image filename of the question type
* @todo don't use eval
*/
public function get_type_icon_html()
{
$type = $this->selectType();
// [0]=file to include [1]=type name
$tabQuestionList = Question::get_question_type_list();
require_once $tabQuestionList[$type][0];
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
*/
public static function get_course_medias(
$course_id,
$start = 0,
$limit = 100,
$sidx = "question",
$sord = "ASC",
$where_condition = array()
) {
$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));
if (!empty($where_condition)) {
//$where_condition
}
$result = Database::select(
'*',
$table_question,
array(
'limit' => " $start, $limit",
'where' => $default_where,
'order' => "$sidx $sord"
)
);
return $result;
}
/**
* Get count course medias
* @param int course id
*/
public static function get_count_course_medias($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 $result['count'];
}
return 0;
}
public static function prepare_course_media_select($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['iid']] = empty($media['question']) ? get_lang('Untitled') : $media['question'];
}
}
return $media_list;
}
public static function get_default_levels()
{
$select_level = array(
1 => 1,
2 => 2,
3 => 3,
4 => 4,
5 => 5
);
return $select_level;
}
public function show_media_content()
{
$html = null;
if ($this->parent_id != 0) {
$parent_question = Question::read($this->parent_id);
$html = $parent_question->show_media_content();
} else {
$html .= Display::page_subheader($this->selectTitle());
$html .= $this->selectDescription();
}
return $html;
}
public static function question_type_no_review()
{
return array(
HOT_SPOT,
HOT_SPOT_ORDER,
HOT_SPOT_DELINEATION
);
}
public static function getMediaLabels()
{
// Shows media questions
$courseMedias = Question::prepare_course_media_select(api_get_course_int_id());
$labels = null;
if (!empty($courseMedias)) {
$labels .= get_lang('MediaQuestion').' ';
foreach ($courseMedias as $mediaId => $media) {
$editLink = '<a href="'.api_get_self().'?'.api_get_cidreq().'&type='.MEDIA_QUESTION.'&myid=1&editQuestion='.$mediaId.'">'.Display::return_icon('edit.png',get_lang('Modify'), array(), ICON_SIZE_SMALL).'</a>';
$deleteLink = '<a id="delete_'.$mediaId.'" class="opener" href="'.api_get_self().'?'.api_get_cidreq().'&deleteQuestion='.$mediaId.'" >'.Display::return_icon('delete.png',get_lang('Delete'), array(), ICON_SIZE_SMALL).'</a>';
if (!empty($mediaId)) {
$labels .= self::getMediaLabel($media).''.$editLink.$deleteLink.' ';
}
}
}
return $labels;
}
/**
* Get question columns needed for the new question pool page
* @param int course code
* @return array
*/
public static function getQuestionColumns($courseCode = null, $extraFields = array(), $questionFields = array(), $checkFields = false)
{
// The order is important you need to check the the $column variable in the model.ajax.php file
$columns = array('id', get_lang('Name'));
// Column config.
$columnModel = array(
array(
'name' => 'iid',
'index' => 'iid',
'width' => '20',
'align' => 'left'
),
array(
'name' => 'question',
'index' => 'question',
'width' => '200',
'align' => 'left'
)
);
//var_dump($extraFields, $questionFields);
// Extra field rules.
$extraField = new \ExtraField('question');
$rules = $extraField->getRules($columns, $columnModel, $extraFields, $checkFields);
// Exercise rules.
self::getRules($courseCode, $rules, $columns, $columnModel, $questionFields, $checkFields);
// Adding actions.
$columns[] = get_lang('Actions');
$columnModel[] = array(
'name' => 'actions',
'index' => 'actions',
'width' => '30'
);
foreach ($columnModel as $col) {
$simple_column_name[] = $col['name'];
}
$return_array = array(
'columns' => $columns,
'column_model' => $columnModel,
'rules' => $rules,
'simple_column_name' => $simple_column_name
);
return $return_array;
}
/**
* Get all questions
* @param array $options
* @return array
*/
public static function getQuestions($app, $categoryId, $exerciseId, $courseId, $options, $get_count = false)
{
$questionTable = Database::get_course_table(TABLE_QUIZ_QUESTION);
$questionPoolFields = array(
'question_session_id' => array(
'innerjoin' => " INNER JOIN ".Database::get_course_table(TABLE_QUIZ_TEST_QUESTION)." as quiz_rel_question_session ON (quiz_rel_question_session.question_id = s.iid)
INNER JOIN ".Database::get_course_table(TABLE_QUIZ_TEST)." as quizsession ON (quizsession.iid = quiz_rel_question_session.exercice_id)
INNER JOIN ".Database::get_main_table(TABLE_MAIN_SESSION)." session ON (session.id = quizsession.session_id)",
'where' => 'session_id',
'inject_fields' => 'session.name as question_session_id, ',
),
'question_category_id' => array(
'innerjoin' => " INNER JOIN ".Database::get_course_table(TABLE_QUIZ_QUESTION_REL_CATEGORY)." as quiz_rel_cat ON (quiz_rel_cat.question_id = s.iid)
INNER JOIN ".Database::get_course_table(TABLE_QUIZ_CATEGORY)." as cat ON (cat.iid = quiz_rel_cat.category_id)
",
'where' => 'quiz_rel_cat.category_id',
'inject_fields' => 'cat.title as question_category_id, ',
),
'question_exercise_id' => array(
'innerjoin' => " INNER JOIN ".Database::get_course_table(TABLE_QUIZ_TEST_QUESTION)." as quiz_rel_question ON (quiz_rel_question.question_id = s.iid)
INNER JOIN ".Database::get_course_table(TABLE_QUIZ_TEST)." as quizexercise ON (quizexercise.iid = quiz_rel_question.exercice_id)
",
'where' => 'quiz_rel_question.exercice_id',
'inject_fields' => 'quizexercise.title as question_exercise_id, ',
),
'question_c_id' => array(
'where' => 's.c_id',
'innerjoin' => " INNER JOIN ".Database::get_main_table(TABLE_MAIN_COURSE)." as course ON (course.id = s.c_id) ",
'inject_fields' => 'course.title as question_c_id, '
),
'question_question_type' => array(
'where' => 's.type ',
'inject_fields' => 's.type as question_question_type,'
),
'question_difficulty' => array(
'where' => 's.level',
'inject_fields' => 's.level as question_difficulty, '
)
);
$inject_extra_fields = null;
$inject_joins = null;
$where = $options['where'];
$newQuestionPoolField = array();
if (isset($options['question'])) {
foreach ($options['question'] as $question) {
if (isset($questionPoolFields[$question['field']])) {
$newQuestionPoolField[$question['field']] = $questionPoolFields[$question['field']];
}
}
}
$inject_question_fields = null;
$questionPoolFields = $newQuestionPoolField;
foreach ($questionPoolFields as $field => $option) {
$where = str_replace($field, $option['where'], $where);
if (isset($option['innerjoin']) && !empty($option['innerjoin'])) {
$inject_joins .= $option['innerjoin'];
}
if (isset($option['inject_fields']) && !empty($option['inject_fields'])) {
$inject_question_fields .= $option['inject_fields'];
}
}
$options['where'] = $where;
$extra_field = new ExtraField('question');
$conditions = $extra_field->parseConditions($options);
$inject_joins .= $conditions['inject_joins'];
$where = $conditions['where'];
$inject_where = $conditions['inject_where'];
$inject_extra_fields = $conditions['inject_extra_fields'];
$order = $conditions['order'];
$limit = $conditions['limit'];
if ($get_count == true) {
$select = " SELECT count(*) as total_rows";
} else {
$select = " SELECT s.*, $inject_extra_fields $inject_question_fields 1 ";
}
$extraCondition = null;
// Used by the question manager
if (!empty($categoryId)) {
$categoryRelQuestionTable = Database::get_course_table(TABLE_QUIZ_QUESTION_REL_CATEGORY);
$extraCondition = " INNER JOIN $categoryRelQuestionTable c ON (s.iid = c.question_id)";
$categoryId = intval($categoryId);
$where .= " AND category_id = $categoryId ";
}
/*if (!empty($exerciseId)) {
$exerciseRelQuestionTable = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
$extraCondition .= " INNER JOIN $exerciseRelQuestionTable e ON (s.iid = e.question_id)";
$exerciseId = intval($exerciseId);
$where .= " AND exercice_id = $exerciseId ";
}*/
if (!empty($courseId)) {
$courseId = intval($courseId);
$where .= " AND s.c_id = $courseId ";
}
$query = " $select FROM $questionTable s $inject_joins $extraCondition WHERE 1=1 $where $inject_where $order $limit";
//echo $query.'<br />';
//var_dump($extraCondition);
//var_dump($where);
$result = Database::query($query);
$questions = array();
$exerciseList = null;
if (!empty($exerciseId)) {
$exercise = new Exercise();
$exercise->read($exerciseId);
$exerciseList = $exercise->questionList;
}
if (Database::num_rows($result)) {
$questions = Database::store_result($result, 'ASSOC');
if ($get_count) {
return $questions[0]['total_rows'];
}
$previewIcon = Display::return_icon('preview.gif', get_lang('View'), array(), ICON_SIZE_SMALL);
$copyIcon = Display::return_icon('copy.png', get_lang('Copy'), array(), ICON_SIZE_SMALL);
$reuseIcon = Display::return_icon('view_more_stats.gif', get_lang('InsertALinkToThisQuestionInTheExercise'), array(), ICON_SIZE_SMALL);
$editIcon = Display::return_icon('edit.png', get_lang('Edit'), array(), ICON_SIZE_SMALL);
//$deleteIcon = Display::return_icon('delete.png', get_lang('Delete'), array(), ICON_SIZE_SMALL);
//var_dump($exerciseId);
// Including actions
foreach ($questions as &$question) {
if (empty($exerciseId)) {
// View.
$actions = Display::url(
$previewIcon,
$app['url_generator']->generate(
'admin_questions_show',
array(
'id' => $question['iid']
)
)
);
// Edit.
$actions .= Display::url(
$editIcon,
$app['url_generator']->generate(
'admin_questions_edit',
array(
'id' => $question['iid']
)
)
);
} else {
// View.
$actions = Display::url(
$previewIcon,
$app['url_generator']->generate(
'question_show',
array(
'cidReq' => api_get_course_id(),
'id_session' => api_get_session_id(),
'exerciseId' => $exerciseId,
'id' => $question['iid']
)
)
);
if (isset($exerciseList) && !empty($exerciseList) && (in_array($question['iid'], $exerciseList))) {
// Copy.
//$actions .= $copyIconDisabled;
} else {
// Copy.
$actions .= Display::url(
$copyIcon,
$app['url_generator']->generate(
'exercise_copy_question',
array(
'cidReq' => api_get_course_id(),
'id_session' => api_get_session_id(),
'questionId' => $question['iid'],
'exerciseId' => $exerciseId
)
)
);
// Reuse.
$actions .= Display::url(
$reuseIcon,
$app['url_generator']->generate(
'exercise_reuse_question',
array(
'cidReq' => api_get_course_id(),
'id_session' => api_get_session_id(),
'questionId' => $question['iid'],
'exerciseId' => $exerciseId
)
)
);
}
// Edit.
$actions .= Display::url(
$editIcon,
$app['url_generator']->generate(
'exercise_question_edit',
array(
'cidReq' => api_get_course_id(),
'id_session' => api_get_session_id(),
'id' => $question['iid']
)
)
);
}
$question['actions'] = $actions;
}
}
return $questions;
}
public static function getMediaLabel($title)
{
return Display::label($title, 'warning');
}
/**
* @param string $courseCode
* @param array $rules
* @param array $columns
* @param array $column_model
* @return array
*/
public static function getRules($courseCode, &$rules, &$columns, &$column_model, $questionFields, $checkFields = false)
{
// sessions
// course
// categories
// exercises
// difficult
// type
if (empty($courseCode)) {
// Session
$sessionList = SessionManager::get_sessions_by_general_coach(api_get_user_id());
$fields = array();
if (!empty($sessionList)) {
$new_options = array();
$new_options[] = "-1:".get_lang('All');
foreach ($sessionList as $session) {
$new_options[] = "{$session['id']}:{$session['name']}";
}
$string = implode(';', $new_options);
$fields[] = array(
'field_display_text' => get_lang('Session'),
'field_variable' => 'session_id',
'field_type' => ExtraField::FIELD_TYPE_SELECT,
'field_default_value' => null,
'field_options' => $string
);
}
// Courses
$courseList = CourseManager::get_course_list_of_user_as_course_admin(api_get_user_id());
if (!empty($courseList)) {
$new_options = array();
$new_options[] = "-1:".get_lang('All');
foreach ($courseList as $course) {
$new_options[] = "{$course['id']}:{$course['title']}";
}
$string = implode(';', $new_options);
$fields[] = array(
'field_display_text' => get_lang('Course'),
'field_variable' => 'c_id',
'field_type' => ExtraField::FIELD_TYPE_SELECT,
'field_default_value' => null,
'field_options' => $string
);
}
} else {
$courseList = array(api_get_course_info());
}
// Categories
$string = null;
if (!empty($courseList)) {
$new_options = array();
$new_options[] = "-1:".get_lang('All');
// Global categories
// @todo use tree view
$categories = Testcategory::getCategoriesIdAndName(0);
if (!empty($categories)) {
foreach ($categories as $id => $category) {
if (!empty($id)) {
$new_options[] = "$id:[Global] - ".$category;
}
}
}
foreach ($courseList as $course) {
$categories = Testcategory::getCategoriesIdAndName($course['real_id']);
if (!empty($categories)) {
foreach ($categories as $id => $category) {
if (!empty($id)) {
$new_options[] = "$id:".$course['title']." - ".$category;
}
}
}
}
$string = implode(';', $new_options);
$fields[] = array(
'field_display_text' => get_lang('Category'),
'field_variable' => 'category_id',
'field_type' => ExtraField::FIELD_TYPE_SELECT,
'field_default_value' => null,
'field_options' => $string
);
}
$course = api_get_course_int_id();
$sessionId = api_get_session_id();
// Exercises
$exerciseList = ExerciseLib::get_all_exercises_for_course_id($sessionId, $course);
if (!empty($exerciseList)) {
$new_options = array();
$new_options[] = "-1:".get_lang('All');
$new_options[] = "0:".get_lang('Orphan');
foreach ($exerciseList as $exercise) {
$new_options[] = "{$exercise['iid']}:{$exercise['title']}";
}
$string = implode(';', $new_options);
$fields[] = array(
'field_display_text' => get_lang('Exercise'),
'field_variable' => 'exercise_id',
'field_type' => ExtraField::FIELD_TYPE_SELECT,
'field_default_value' => null,
'field_options' => $string
);
}
// Question type
$questionList = Question::get_question_type_list();
if (!empty($questionList)) {
$new_options = array();
$new_options[] = "-1:".get_lang('All');
foreach ($questionList as $key => $question) {
$new_options[] = "{$key}:".get_lang($question['1']);
}
$string = implode(';', $new_options);
$fields[] = array(
'field_display_text' => get_lang('AnswerType'),
'field_variable' => 'question_type',
'field_type' => ExtraField::FIELD_TYPE_SELECT,
'field_default_value' => null,
'field_options' => $string
);
}
// Difficult
$levels = Question::get_default_levels();
if (!empty($levels)) {
$new_options = array();
$new_options[] = "-1:".get_lang('All');
foreach ($levels as $key => $level) {
$new_options[] ="{$key}:{$level}";
}
$string = implode(';', $new_options);
$fields[] = array(
'field_display_text' => get_lang('Difficulty'),
'field_variable' => 'difficulty',
'field_type' => ExtraField::FIELD_TYPE_SELECT,
'field_default_value' => null,
'field_options' => $string
);
}
$questionFieldsKeys = array();
if (!empty($questionFields)) {
foreach ($questionFields as $question) {
$questionFieldsKeys[] = $question['field'];
}
}
if (!empty($fields)) {
foreach ($fields as $field) {
$search_options = array();
$type = 'text';
if (in_array($field['field_type'], array(ExtraField::FIELD_TYPE_SELECT, ExtraField::FIELD_TYPE_DOUBLE_SELECT))) {
$type = 'select';
$search_options['sopt'] = array('eq', 'ne'); //equal not equal
//$search_options['sopt'] = array('cn', 'nc'); //contains not contains
} else {
$search_options['sopt'] = array('cn', 'nc'); //contains not contains
}
$search_options['searchhidden'] = 'true';
$search_options['defaultValue'] = isset($search_options['field_default_value']) ? $search_options['field_default_value'] : null;
$search_options['value'] = $field['field_options'];
$column_model[] = array(
'name' => 'question_'.$field['field_variable'],
'index' => 'question_'.$field['field_variable'],
'width' => '100',
'hidden' => 'true',
'search' => 'true',
'stype' => $type,
'searchoptions' => $search_options
);
$columns[] = $field['field_display_text'];
$rules[] = array(
'field' => 'question_'.$field['field_variable'],
'op' => 'eq'
);
}
}
return $rules;
}
/**
*
* @param $exerciseId
* @param $mediaId
* @return array|bool
*/
public function getQuestionsPerMediaWithCategories($exerciseId, $mediaId)
{
$exerciseId = intval($exerciseId);
$mediaId = intval($mediaId);
$questionTable = Database::get_course_table(TABLE_QUIZ_QUESTION);
$questionRelExerciseTable = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
$sql = "SELECT q.* FROM $questionTable q INNER JOIN $questionRelExerciseTable r ON (q.iid = r.question_id)
WHERE (r.exercice_id = $exerciseId AND q.parent_id = $mediaId) ";
$result = Database::query($sql);
if (Database::num_rows($result)) {
return Database::store_result($result, 'ASSOC');
}
return false;
}
/**
* @param int $exerciseId
* @param int $mediaId
* @return array
*/
public function getQuestionCategoriesOfMediaQuestions($exerciseId, $mediaId)
{
$questions = $this->getQuestionsPerMediaWithCategories($exerciseId, $mediaId);
$questionCategoryList = array();
if (!empty($questions)) {
foreach ($questions as $question) {
$categories = TestCategory::getCategoryForQuestionWithCategoryData($question['iid']);
if (!empty($categories)) {
foreach ($categories as $category) {
$questionCategoryList[$question['iid']][] = $category['iid'];
}
}
}
}
return $questionCategoryList;
}
/**
* Check if the media sent matches other medias sent before
* @param int $exerciseId
* @param int $mediaId
* @return array
*/
public function allQuestionWithMediaHaveTheSameCategory($exerciseId, $mediaId, $categoryListToCompare = array(), $ignoreQuestionId = null, $returnCategoryId = false)
{
$questions = $this->getQuestionCategoriesOfMediaQuestions($exerciseId, $mediaId);
$result = false;
$categoryId = null;
if (empty($questions)) {
$result = true;
} else {
$tempArray = array();
foreach ($questions as $categories) {
$diff = array_diff($tempArray, $categories);
$categoryId = $categories[0];
$tempArray = $categories;
if (empty($diff)) {
$result = true;
continue;
} else {
$result = false;
break;
}
}
}
if (isset($categoryListToCompare) && !empty($categoryListToCompare)) {
$result = false;
foreach ($questions as $questionId => $categories) {
if ($ignoreQuestionId == $questionId) {
continue;
}
$diff = array_diff($categoryListToCompare, $categories);
$categoryId = $categories[0];
if (empty($diff)) {
$result = true;
continue;
} else {
$result = false;
break;
}
}
}
if ($returnCategoryId) {
return $categoryId;
}
return $result;
}
}