Actualización
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357
main/gradebook/lib/be/forumthreadlink.class.php
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357
main/gradebook/lib/be/forumthreadlink.class.php
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<?php
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/* For licensing terms, see /license.txt */
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/**
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* Class ForumThreadLink.
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*
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* @author Bert Steppé
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*/
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class ForumThreadLink extends AbstractLink
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{
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private $forum_thread_table;
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private $itemprop_table;
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/**
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* Constructor.
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*/
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public function __construct()
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{
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parent::__construct();
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$this->set_type(LINK_FORUM_THREAD);
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}
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/**
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* @return string
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*/
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public function get_type_name()
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{
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return get_lang('ForumThreads');
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}
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/**
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* @return bool
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*/
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public function is_allowed_to_change_name()
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{
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return false;
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}
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/**
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* Generate an array of all exercises available.
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*
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* @return array 2-dimensional array - every element contains 2 subelements (id, name)
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*/
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public function get_all_links()
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{
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if (empty($this->course_code)) {
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return [];
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}
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$tbl_grade_links = Database::get_course_table(TABLE_FORUM_THREAD);
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$tbl_item_property = Database::get_course_table(TABLE_ITEM_PROPERTY);
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$sessionId = $this->get_session_id();
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if ($sessionId) {
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$session_condition = 'tl.session_id='.$sessionId;
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} else {
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$session_condition = '(tl.session_id = 0 OR tl.session_id IS NULL)';
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}
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$sql = 'SELECT tl.thread_id, tl.thread_title, tl.thread_title_qualify
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FROM '.$tbl_grade_links.' tl INNER JOIN '.$tbl_item_property.' ip
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ON (tl.thread_id = ip.ref AND tl.c_id = ip.c_id)
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WHERE
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tl.c_id = '.$this->course_id.' AND
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ip.c_id = '.$this->course_id.' AND
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ip.tool = "forum_thread" AND
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ip.visibility <> 2 AND
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'.$session_condition.'
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';
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$result = Database::query($sql);
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while ($data = Database::fetch_array($result)) {
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if (isset($data['thread_title_qualify']) && '' != $data['thread_title_qualify']) {
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$cats[] = [$data['thread_id'], $data['thread_title_qualify']];
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} else {
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$cats[] = [$data['thread_id'], $data['thread_title']];
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}
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}
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$my_cats = isset($cats) ? $cats : [];
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return $my_cats;
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}
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/**
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* Has anyone done this exercise yet ?
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*
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* @return bool
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*/
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public function has_results()
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{
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$table = Database::get_course_table(TABLE_FORUM_POST);
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$sql = "SELECT count(*) AS number FROM $table
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WHERE
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c_id = ".$this->course_id." AND
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thread_id = '".$this->get_ref_id()."'
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";
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$result = Database::query($sql);
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$number = Database::fetch_row($result);
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return 0 != $number[0];
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}
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/**
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* @param int $stud_id
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* @param string $type
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*
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* @return array|null
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*/
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public function calc_score($stud_id = null, $type = null)
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{
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require_once api_get_path(SYS_CODE_PATH).'forum/forumfunction.inc.php';
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$threadInfo = get_thread_information('', $this->get_ref_id());
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$thread_qualify = Database::get_course_table(TABLE_FORUM_THREAD_QUALIFY);
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$sessionId = $this->get_session_id();
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$sessionCondition = api_get_session_condition(
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$sessionId,
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true,
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false,
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'session_id'
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);
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$sql = 'SELECT thread_qualify_max
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FROM '.Database::get_course_table(TABLE_FORUM_THREAD)."
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WHERE
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c_id = ".$this->course_id." AND
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thread_id = '".$this->get_ref_id()."'
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$sessionCondition
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";
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$query = Database::query($sql);
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$assignment = Database::fetch_array($query);
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$sql = "SELECT * FROM $thread_qualify
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WHERE
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c_id = ".$this->course_id." AND
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thread_id = ".$this->get_ref_id()."
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$sessionCondition
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";
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if (isset($stud_id)) {
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$sql .= ' AND user_id = '.intval($stud_id);
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}
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// order by id, that way the student's first attempt is accessed first
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$sql .= ' ORDER BY qualify_time DESC';
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$scores = Database::query($sql);
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// for 1 student
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if (isset($stud_id)) {
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if (0 == $threadInfo['thread_peer_qualify']) {
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// Classic way of calculate score
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if ($data = Database::fetch_array($scores)) {
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return [
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$data['qualify'],
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$assignment['thread_qualify_max'],
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];
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} else {
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// We sent the 0/thread_qualify_max instead of null for correct calculations
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return [0, $assignment['thread_qualify_max']];
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}
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} else {
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// Take average
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$score = 0;
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$counter = 0;
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if (Database::num_rows($scores)) {
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while ($data = Database::fetch_array($scores, 'ASSOC')) {
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$score += $data['qualify'];
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$counter++;
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}
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}
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// If no result
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if (empty($counter) || $counter <= 2) {
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return [0, $assignment['thread_qualify_max']];
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}
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return [$score / $counter, $assignment['thread_qualify_max']];
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}
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} else {
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// All students -> get average
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$students = []; // user list, needed to make sure we only
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// take first attempts into account
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$counter = 0;
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$sum = 0;
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$bestResult = 0;
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$weight = 0;
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$sumResult = 0;
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while ($data = Database::fetch_array($scores)) {
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if (!(array_key_exists($data['user_id'], $students))) {
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if (0 != $assignment['thread_qualify_max']) {
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$students[$data['user_id']] = $data['qualify'];
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$counter++;
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$sum += $data['qualify'] / $assignment['thread_qualify_max'];
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$sumResult += $data['qualify'];
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if ($data['qualify'] > $bestResult) {
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$bestResult = $data['qualify'];
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}
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$weight = $assignment['thread_qualify_max'];
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}
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}
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}
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if (0 == $counter) {
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return [null, null];
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} else {
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switch ($type) {
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case 'best':
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return [$bestResult, $weight];
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break;
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case 'average':
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return [$sumResult / $counter, $weight];
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break;
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case 'ranking':
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return AbstractLink::getCurrentUserRanking($stud_id, $students);
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break;
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default:
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return [$sum, $counter];
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break;
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}
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}
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}
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}
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public function needs_name_and_description()
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{
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return false;
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}
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public function needs_max()
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{
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return false;
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}
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public function needs_results()
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{
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return false;
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}
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/**
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* @return string
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*/
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public function get_name()
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{
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$this->get_exercise_data();
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$thread_title = isset($this->exercise_data['thread_title']) ? $this->exercise_data['thread_title'] : '';
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$thread_title_qualify = isset($this->exercise_data['thread_title_qualify']) ? $this->exercise_data['thread_title_qualify'] : '';
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if (isset($thread_title_qualify) && '' != $thread_title_qualify) {
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return $this->exercise_data['thread_title_qualify'];
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}
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return $thread_title;
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}
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/**
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* @return string
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*/
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public function get_description()
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{
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return ''; //$this->exercise_data['description'];
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}
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/**
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* Check if this still links to an exercise.
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*/
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public function is_valid_link()
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{
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$sessionId = $this->get_session_id();
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$sql = 'SELECT count(id) from '.$this->get_forum_thread_table().'
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WHERE
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c_id = '.$this->course_id.' AND
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thread_id = '.$this->get_ref_id().' AND
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session_id='.$sessionId;
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$result = Database::query($sql);
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$number = Database::fetch_row($result);
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return 0 != $number[0];
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}
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public function get_link()
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{
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$sessionId = $this->get_session_id();
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//it was extracts the forum id
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$sql = 'SELECT * FROM '.$this->get_forum_thread_table()."
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WHERE
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c_id = '.$this->course_id.' AND
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thread_id = '".$this->get_ref_id()."' AND
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session_id = $sessionId ";
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$result = Database::query($sql);
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$row = Database::fetch_array($result, 'ASSOC');
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$forum_id = $row['forum_id'];
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$url = api_get_path(WEB_PATH).'main/forum/viewthread.php?'.api_get_cidreq_params($this->get_course_code(), $sessionId).'&thread='.$this->get_ref_id().'&gradebook=view&forum='.$forum_id;
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return $url;
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}
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public function get_icon_name()
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{
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return 'forum';
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}
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public function save_linked_data()
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{
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$weight = $this->get_weight();
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$ref_id = $this->get_ref_id();
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if (!empty($ref_id)) {
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$sql = 'UPDATE '.$this->get_forum_thread_table().' SET
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thread_weight='.api_float_val($weight).'
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WHERE c_id = '.$this->course_id.' AND thread_id= '.$ref_id;
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Database::query($sql);
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}
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}
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public function delete_linked_data()
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{
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$ref_id = $this->get_ref_id();
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if (!empty($ref_id)) {
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// Cleans forum
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$sql = 'UPDATE '.$this->get_forum_thread_table().' SET
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thread_qualify_max = 0,
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thread_weight = 0,
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thread_title_qualify = ""
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WHERE c_id = '.$this->course_id.' AND thread_id= '.$ref_id;
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Database::query($sql);
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}
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}
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/**
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* Lazy load function to get the database table of the student publications.
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*/
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private function get_forum_thread_table()
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{
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return $this->forum_thread_table = Database::get_course_table(TABLE_FORUM_THREAD);
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}
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private function get_exercise_data()
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{
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$sessionId = $this->get_session_id();
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if ($sessionId) {
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$session_condition = 'session_id = '.$sessionId;
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} else {
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$session_condition = '(session_id = 0 OR session_id IS NULL)';
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}
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if (!isset($this->exercise_data)) {
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$sql = 'SELECT * FROM '.$this->get_forum_thread_table().'
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WHERE
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c_id = '.$this->course_id.' AND
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thread_id = '.$this->get_ref_id().' AND
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'.$session_condition;
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$query = Database::query($sql);
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$this->exercise_data = Database::fetch_array($query);
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}
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return $this->exercise_data;
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}
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}
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