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'), 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'), ); /** * constructor of the class * * @author - Olivier Brouckaert */ function Question() { $this->id=0; $this->question=''; $this->description=''; $this->weighting=0; $this->position=1; $this->picture=''; $this->level = 1; $this->extra=''; $this->exerciseList=array(); } public function getIsContent() { $isContent = intval($_REQUEST['isContent']); return $this->isContent = $isContent; } /** * Reads question informations from the data base * * @author - Olivier Brouckaert * @param - integer $id - question ID * @return - boolean - true if question exists, otherwise false */ static function read($id, $course_id = null) { $id = intval($id); if (!empty($course_id)) { $course_info = api_get_course_info_by_id($course_id); } else { global $course; $course_info = api_get_course_info(); } $TBL_EXERCICES = Database::get_course_table(TABLE_QUIZ_TEST, $course_info['db_name']); $TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION, $course_info['db_name']); $TBL_EXERCICE_QUESTION = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION, $course_info['db_name']); $sql="SELECT question,description,ponderation,position,type,picture,level,extra FROM $TBL_QUESTIONS WHERE id= $id "; $result=Database::query($sql); // if the question has been found if ($object = Database::fetch_object($result)) { $objQuestion = Question::getInstance($object->type); $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; $sql="SELECT exercice_id FROM $TBL_EXERCICE_QUESTION WHERE question_id='".$id."'"; $result=Database::query($sql); // fills the array with the exercises which this question is in while($object=Database::fetch_object($result)) { $objQuestion->exerciseList[]=$object->exercice_id; } return $objQuestion; } // question not found return false; } /** * returns the question ID * * @author - Olivier Brouckaert * @return - integer - question ID */ function selectId() { return $this->id; } /** * returns the question title * * @author - Olivier Brouckaert * @return - string - question title */ function selectTitle() { $this->question=text_filter($this->question); return $this->question; } /** * returns the question description * * @author - Olivier Brouckaert * @return - string - question description */ function selectDescription() { $this->description=text_filter($this->description); return $this->description; } /** * returns the question weighting * * @author - Olivier Brouckaert * @return - integer - question weighting */ function selectWeighting() { return $this->weighting; } /** * returns the question position * * @author - Olivier Brouckaert * @return - integer - question position */ function selectPosition() { return $this->position; } /** * returns the answer type * * @author - Olivier Brouckaert * @return - integer - answer type */ function selectType() { return $this->type; } /** * returns the level of the question * * @author - Nicolas Raynaud * @return - integer - level of the question, 0 by default. */ function selectLevel() { return $this->level; } /** * returns the picture name * * @author - Olivier Brouckaert * @return - string - picture name */ function selectPicture() { return $this->picture; } function selectPicturePath() { if (!empty($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 */ function selectExerciseList() { return $this->exerciseList; } /** * returns the number of exercises which this question is in * * @author - Olivier Brouckaert * @return - integer - number of exercises */ function selectNbrExercises() { return sizeof($this->exerciseList); } /** * changes the question title * * @author - Olivier Brouckaert * @param - string $title - question title */ function updateTitle($title) { $this->question=$title; } /** * changes the question description * * @author - Olivier Brouckaert * @param - string $description - question description */ function updateDescription($description) { $this->description=$description; } /** * changes the question weighting * * @author - Olivier Brouckaert * @param - integer $weighting - question weighting */ function updateWeighting($weighting) { $this->weighting=$weighting; } /** * changes the question position * * @author - Olivier Brouckaert * @param - integer $position - question position */ function updatePosition($position) { $this->position=$position; } /** * changes the question level * * @author - Nicolas Raynaud * @param - integer $level - question level */ function updateLevel($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 $type - answer type */ function updateType($type) { $TBL_REPONSES = Database::get_course_table(TABLE_QUIZ_ANSWER, $this->course['db_name']); // if we really change the type if($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 $PictureName - Name of the picture * @return - boolean - true if uploaded, otherwise false */ function uploadPicture($Picture,$PictureName) { 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); $doc_id = add_document($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'; if($extension == 'gif' || $extension == 'png') { $o_img = new image($Picture); $o_img->send_image('JPG',$picturePath.'/'.$this->picture); $document_id = add_document($this->course, '/images/'.$this->picture, 'file', filesize($picturePath.'/'.$this->picture),$this->picture); } else { move_uploaded_file($Picture,$picturePath.'/'.$this->picture)?true:false; } $document_id = add_document($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 $Max - Maximum size * @return - boolean - true if success, false if failed */ function resizePicture($Dimension, $Max) { global $picturePath; // if the question has an ID if($this->id) { // Get dimensions from current image. $current_img = imagecreatefromjpeg($picturePath.'/'.$this->picture); $current_image_size = getimagesize($picturePath.'/'.$this->picture); $current_height = imagesy($current_img); $current_width = imagesx($current_img); if($current_image_size[0] < $Max && $current_image_size[1] <$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); } } // Create new image $new_img = imagecreatetruecolor($new_width, $new_height); $bgColor = imagecolorallocate($new_img, 255,255,255); imagefill($new_img , 0,0 , $bgColor); // Resize image imagecopyresized($new_img, $current_img, 0, 0, 0, 0, $new_width, $new_height, $current_width, $current_height); // Write image to file $result = imagejpeg($new_img, $picturePath.'/'.$this->picture, 100); // Delete temperory images, clear memory imagedestroy($current_img); imagedestroy($new_img); if ($result) { return true; } else { return false; } } } /** * deletes the picture * * @author - Olivier Brouckaert * @return - boolean - true if removed, otherwise false */ 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 $questionId - ID of the target question * @return - boolean - true if copied, otherwise false */ function exportPicture($questionId, $course_info) { $TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION, $course_info['db_name']); $destination_path = api_get_path(SYS_COURSE_PATH).$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; $sql="UPDATE $TBL_QUESTIONS SET picture='".Database::escape_string($picture)."' WHERE id='".intval($questionId)."'"; Database::query($sql); return @copy($source_path.'/'.$this->picture, $destination_path.'/'.$picture)?true:false; } 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 */ 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 $exerciseId - exercise ID if saving in an exercise */ function save($exerciseId=0) { $TBL_EXERCICE_QUESTION = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION, $this->course['db_name']); $TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION, $this->course['db_name']); $id=$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; // 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($level)."' WHERE id='".Database::escape_string($id)."'"; Database::query($sql); if(!empty($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, $TBL_EXERCICE_QUESTION as test_question WHERE question.id=test_question.question_id AND test_question.exercice_id='".Database::escape_string($exerciseId)."'"; $result=Database::query($sql); $current_position=Database::result($result,0,0); $this -> updatePosition($current_position+1); $position = $this -> position; $sql="INSERT INTO $TBL_QUESTIONS(question,description,ponderation,position,type,picture,extra, level) VALUES( '".Database::escape_string($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($level)."' )"; Database::query($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 $TBL_ANSWERS (id , question_id , answer , correct , comment , ponderation , position , hotspot_coordinates , hotspot_type ) VALUES ('1', '".Database::escape_string($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 $TBL_ANSWERS (id , question_id , answer , correct , comment , ponderation , position , hotspot_coordinates , hotspot_type ) VALUES ('1', '".Database::escape_string($this->id)."', '', NULL , '', '10' , '1', '0;0|0|0', 'delineation')"; api_sql_query($sql,__FILE__,__LINE__); //$TBL_ANSWERS = Database::get_course_table(TABLE_QUIZ_ANSWER); //$sql="INSERT INTO $TBL_ANSWERS (`id` , `question_id` , `answer` , `correct` , `comment` , `ponderation` , `position` , `hotspot_coordinates` , `hotspot_type` ) VALUES ('2', '".Database::escape_string($this->id)."', '', NULL , '', NULL , '1', '0;0|0|0', 'noerror')"; //api_sql_query($sql,__FILE__,__LINE__); } if (api_get_setting('search_enabled')=='true') { if ($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) { /* $sql = 'UPDATE '.Database::get_course_table(TABLE_LP_ITEM).' SET max_score = '.intval($weighting).' WHERE item_type = "'.TOOL_QUIZ.'" AND path='.intval($exerciseId); Database::query($sql); */ // adds the exercise into the exercise list of this question $this->addToList($exerciseId, TRUE); } } 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/DokeosIndexer.class.php'); require_once(api_get_path(LIBRARY_PATH) . 'search/IndexableChunk.class.php'); $di = new DokeosIndexer(); if ($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 - comming from $this->save() or not */ function addToList($exerciseId, $fromSave = FALSE) { $TBL_EXERCICE_QUESTION = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION, $this->course['db_name']); $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 $TBL_EXERCICE_QUESTION (question_id, exercice_id, question_order) VALUES ('".Database::escape_string($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 $exerciseId - exercise ID * @return - boolean - true if removed, otherwise false */ function removeFromList($exerciseId) { global $TBL_EXERCICE_QUESTION; $id=$this->id; // searches the position of the exercise ID in the list $pos=array_search($exerciseId,$this->exerciseList); // exercise not found if($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 $TBL_EXERCICE_QUESTION WHERE question_id='".Database::escape_string($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 $TBL_EXERCICE_QUESTION SET question_order = question_order-1 WHERE exercice_id='".Database::escape_string($exerciseId)."' AND question_order > ".$row['question_order']; $res = Database::query($sql); } } $sql="DELETE FROM $TBL_EXERCICE_QUESTION WHERE question_id='".Database::escape_string($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 $deleteFromEx - exercise ID if the question is only removed from one exercise */ function delete($deleteFromEx=0) { global $_course,$_user; $TBL_EXERCICE_QUESTION = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION, $this->course['db_name']); $TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION, $this->course['db_name']); $TBL_REPONSES = Database::get_course_table(TABLE_QUIZ_ANSWER, $this->course['db_name']); $id=$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 $TBL_EXERCICE_QUESTION WHERE question_id='".Database::escape_string($id)."'"; $res = Database::query($sql); if (Database::num_rows($res)>0) { while ($row = Database::fetch_array($res)) { if (!empty($row['question_order'])) { $sql = "UPDATE $TBL_EXERCICE_QUESTION SET question_order = question_order-1 WHERE exercice_id='".Database::escape_string($row['exercice_id'])."' AND question_order > ".$row['question_order']; $res = Database::query($sql); } } } $sql="DELETE FROM $TBL_EXERCICE_QUESTION WHERE question_id='".Database::escape_string($id)."'"; Database::query($sql); $sql="DELETE FROM $TBL_QUESTIONS WHERE id='".Database::escape_string($id)."'"; Database::query($sql); $sql="DELETE FROM $TBL_REPONSES WHERE question_id='".Database::escape_string($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(); } // just removes the exercise from the list else { $this->removeFromList($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, $id,'QuizQuestionDeleted',api_get_user_id()); } } /** * Duplicates the question * * @author Olivier Brouckaert * @param array Course info of the destination course * @return int ID of the new question */ function duplicate($course_info = null) { if (empty($course_info)) { $course_info = $this->course; } else { $course_info = $course_info; } $TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION, $course_info['db_name']); $TBL_QUESTION_OPTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION_OPTION, $course_info['db_name']); $question = $this->question; $description = $this->description; $weighting = $this->weighting; $position = $this->position; $type = $this->type; $level = intval($this->level); $extra = $this->extra; //Using the same method used in the course copy to transform URLs require_once api_get_path(LIBRARY_PATH).'document.lib.php'; if ($course_info['db_name'] != $this->course['db_name']) { $description = DocumentManager::replace_urls_inside_content_html_from_copy_course($description, $this->course['id'], $course_info['id']); $question = DocumentManager::replace_urls_inside_content_html_from_copy_course($question, $this->course['id'], $course_info['id']); } $options = self::readQuestionOption($this->id); //Inserting in the new course db / or the same course db $sql="INSERT INTO $TBL_QUESTIONS(question, description, ponderation, position, type, level, extra ) VALUES('".Database::escape_string($question)."','".Database::escape_string($description)."','".Database::escape_string($weighting)."','".Database::escape_string($position)."','".Database::escape_string($type)."' ,'".Database::escape_string($level)."' ,'".Database::escape_string($extra)."' )"; Database::query($sql); $new_question_id =Database::insert_id(); if (!empty($options)) { //Saving the quiz_options foreach ($options as $item) { $item['question_id'] = $new_question_id; unset($item['id']); Database::insert($TBL_QUESTION_OPTIONS,$item); } } // Duplicates the picture $this->exportPicture($new_question_id, $course_info); return $new_question_id; } /** * Returns an instance of the class corresponding to the type * @param integer $type the type of the question * @return an instance of a Question subclass (or of Questionc class by default) */ static function getInstance ($type) { if (!is_null($type)) { list($file_name,$class_name) = self::$questionTypes[$type]; include_once($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 redifine this function to add fields... * @param FormValidator $form the formvalidator instance (by reference) */ function createForm (&$form,$fck_config=0) { echo ' '; echo ''; $renderer = $form->defaultRenderer(); $form->addElement('html','
'); // question name $form->addElement('text','questionName','* '.get_lang('Question'),'size="80"'); //$form->applyFilter('questionName','html_filter'); //$radios_results_enabled[] = $form->createElement('static', null, null, null); //$test=FormValidator :: createElement ('text', 'questionName'); //$radios_results_enabled[]=$test; // question level //@todo move levles into a table $select_level = array (1,2,3,4,5); //$radios_results_enabled[] = foreach($select_level as $val) { $radios_results_enabled[] = FormValidator :: createElement ('radio', null, null,$val,$val); } $form->addGroup($radios_results_enabled,'questionLevel',get_lang('Difficulty')); $renderer->setElementTemplate('
{label}
{element}
','questionName'); $renderer->setElementTemplate('
{label}
{element}
','questionLevel'); $form->addRule('questionName', get_lang('GiveQuestion'), 'required'); // default content $isContent = intval($_REQUEST['isContent']); // question type $answerType= intval($_REQUEST['answerType']); $form->addElement('hidden','answerType',$_REQUEST['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 -> addElement('html','
 '.get_lang('EnrichQuestion').'
'); $form -> addElement ('html','
'); $form->add_html_editor('questionDescription', get_lang('langQuestionDescription'), false, false, $editor_config); $form -> addElement ('html','
'); $renderer->setElementTemplate('
{label}
{element}
','questionDescription'); // hidden values $form->addElement('hidden','myid',$_REQUEST['myid']); if (!isset($_GET['fromExercise'])) { switch($answerType) { case 1: $this->question = get_lang('langDefaultUniqueQuestion'); break; case 2: $this->question = get_lang('langDefaultMultipleQuestion'); break; case 3: $this->question = get_lang('langDefaultFillBlankQuestion'); break; case 4: $this->question = get_lang('langDefaultMathingQuestion'); break; case 5: $this->question = get_lang('langDefaultOpenQuestion'); break; case 9: $this->question = get_lang('langDefaultMultipleQuestion'); break; } } $form->addElement('html','
'); // default values $defaults = array(); $defaults['questionName'] = $this -> question; $defaults['questionDescription'] = $this -> description; $defaults['questionLevel'] = $this -> level; //Came from he question pool if (isset($_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 the formvalidator instance * @param Exercise $objExercise the Exercise instance */ function processCreation ($form, $objExercise) { $this -> updateTitle($form->getSubmitValue('questionName')); $this -> updateDescription($form->getSubmitValue('questionDescription')); $this -> updateLevel($form->getSubmitValue('questionLevel')); $this -> save($objExercise -> id); // 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 ($form); /** * Displays the menu of question types */ static function display_type_menu ($feedbacktype = 0) { global $exerciseId; // 1. by default we show all the question types $question_type_custom_list = self::$questionTypes; if (!isset($feedbacktype)) $feedbacktype=0; if ($feedbacktype==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]); $question_type_custom_list = array ( UNIQUE_ANSWER => self::$questionTypes[UNIQUE_ANSWER],HOT_SPOT_DELINEATION => self::$questionTypes[HOT_SPOT_DELINEATION]); } else { unset($question_type_custom_list[HOT_SPOT_DELINEATION]); } //blocking edition $show_quiz_edition = true; if (isset($exerciseId) && !empty($exerciseId)) { $TBL_LP_ITEM = Database::get_course_table(TABLE_LP_ITEM); $sql="SELECT max_score FROM $TBL_LP_ITEM WHERE item_type = '".TOOL_QUIZ."' AND path ='".Database::escape_string($exerciseId)."'"; $result = Database::query($sql); if (Database::num_rows($result) > 0) { $show_quiz_edition = false; } } echo ''; } static function get_types_information(){ return self::$questionTypes; } static function updateId() { return self::$questionTypes; } static function saveQuestionOption($question_id, $name, $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; $result = self::readQuestionOption($question_id); $last_id = Database::insert($TBL_EXERCICE_QUESTION_OPTION, $params); return $last_id; } static function deleteAllQuestionOptions($question_id) { $TBL_EXERCICE_QUESTION_OPTION = Database::get_course_table(TABLE_QUIZ_QUESTION_OPTION); Database::delete($TBL_EXERCICE_QUESTION_OPTION, array('question_id = ?'=> $question_id)); } static function updateQuestionOption($id, $params) { $TBL_EXERCICE_QUESTION_OPTION = Database::get_course_table(TABLE_QUIZ_QUESTION_OPTION); $result = Database::update($TBL_EXERCICE_QUESTION_OPTION, $params, array('id = ?'=>$id)); return $result; } static function readQuestionOption($question_id, $db_name = null) { if (empty($db_name)) { $TBL_EXERCICE_QUESTION_OPTION = Database::get_course_table(TABLE_QUIZ_QUESTION_OPTION); } else { $TBL_EXERCICE_QUESTION_OPTION = Database::get_course_table(TABLE_QUIZ_QUESTION_OPTION, $db_name); } $result = Database::select('*', $TBL_EXERCICE_QUESTION_OPTION, array('where'=>array('question_id = ?' =>$question_id), 'order'=>'id ASC')); return $result; } function return_header($feedback_type, $counter = null) { $counter_label = ''; if (!is_null($counter)) { $counter = intval($counter); } echo Display::div(get_lang("Question").' '.($counter_label).' : '.$this->question, array('id'=>'question_title', 'class'=>'sectiontitle')); echo Display::div($this->description, array('id'=>'question_description')); } /** * Create a question from a set of parameters * @param int Quiz ID * @param string Question name * @param int Maximum result for the question * @param int Type of question (see constants at beginning of question.class.php) * @param int Question level/category */ function create_question ($quiz_id, $question_name, $max_score = 0, $type = 1, $level = 1) { $tbl_quiz_question = Database::get_course_table(TABLE_QUIZ_QUESTION); $tbl_quiz_rel_question = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION); $quiz_id = filter_var($quiz_id,FILTER_SANITIZE_NUMBER_INT); $max_score = filter_var($max_score,FILTER_SANITIZE_NUMBER_FLOAT); $type = filter_var($type,FILTER_SANITIZE_NUMBER_INT); $level = filter_var($level,FILTER_SANITIZE_NUMBER_INT); // 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"; $rs_max = Database::query($sql, __FILE__, __LINE__); $row_max = Database::fetch_object($rs_max); $max_position = $row_max->max_position +1; // Insert the new question $sql = "INSERT INTO $tbl_quiz_question" ." (question,ponderation,position,type,level) " ." VALUES('".Database::escape_string($question_name)."'," ." $max_score , $max_position, $type, $level)"; $rs = Database::query($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 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 $tbl_quiz_rel_question " ."(question_id,exercice_id,question_order)" ." VALUES($question_id, $quiz_id, $max_order)"; $rs = Database::query($sql); return $question_id; } } endif;