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232 lines
9.0 KiB
232 lines
9.0 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* Class LearnpathList
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* This class is only a learning path list container with several practical methods for sorting the list and
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* provide links to specific paths
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* @uses Database.lib.php to use the database
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* @uses learnpath.class.php to generate learnpath objects to get in the list
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* @author Yannick Warnier <ywarnier@beeznest.org>
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*
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*/
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class LearnpathList
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{
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// Holds a flat list of learnpaths data from the database.
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public $list = array();
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// Holds a list of references to the learnpaths objects (only filled by get_refs()).
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public $ref_list = array();
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// Holds a flat list of learnpaths sorted by alphabetical name order.
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public $alpha_list = array();
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public $course_code;
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public $user_id;
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public $refs_active = false;
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/**
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* This method is the constructor for the learnpathList. It gets a list of available learning paths from
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* the database and creates the learnpath objects. This list depends on the user that is connected
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* (only displays) items if he has enough permissions to view them.
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* @param integer $user_id
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* @param string $course_code Optional course code (otherwise we use api_get_course_id())
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* @param int $session_id Optional session id (otherwise we use api_get_session_id())
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* @param string $order_by
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* @param string $check_publication_dates
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* @param int $categoryId
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*
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* @return void
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*/
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public function __construct(
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$user_id,
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$course_code = '',
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$session_id = null,
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$order_by = null,
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$check_publication_dates = false,
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$categoryId = null
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) {
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$course_info = api_get_course_info($course_code);
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$lp_table = Database::get_course_table(TABLE_LP_MAIN);
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$tbl_tool = Database::get_course_table(TABLE_TOOL_LIST);
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$this->course_code = $course_code;
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$this->user_id = $user_id;
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$course_id = $course_info['real_id'];
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if (empty($course_id)) {
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return false;
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}
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// Condition for the session.
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if (isset($session_id)) {
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$session_id = intval($session_id);
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} else {
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$session_id = api_get_session_id();
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}
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$condition_session = api_get_session_condition($session_id, true, true);
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$order = "ORDER BY display_order ASC, name ASC";
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if (isset($order_by)) {
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$order = Database::parse_conditions(array('order'=>$order_by));
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}
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$now = api_get_utc_datetime();
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$time_conditions = '';
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if ($check_publication_dates) {
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$time_conditions = " AND (
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(publicated_on <> '0000-00-00 00:00:00' AND publicated_on < '$now' AND expired_on <> '0000-00-00 00:00:00' AND expired_on > '$now' ) OR
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(publicated_on <> '0000-00-00 00:00:00' AND publicated_on < '$now' AND expired_on = '0000-00-00 00:00:00') OR
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(publicated_on = '0000-00-00 00:00:00' AND expired_on <> '0000-00-00 00:00:00' AND expired_on > '$now') OR
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(publicated_on = '0000-00-00 00:00:00' AND expired_on = '0000-00-00 00:00:00' ))
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";
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}
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$categoryFilter = '';
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if (!is_null($categoryId) && is_numeric($categoryId)) {
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$categoryId = intval($categoryId);
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$categoryFilter = " AND category_id = $categoryId";
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}
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$sql = "SELECT * FROM $lp_table
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WHERE
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c_id = $course_id
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$time_conditions
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$condition_session
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$categoryFilter
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$order
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";
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$res = Database::query($sql);
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$names = array();
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while ($row = Database::fetch_array($res,'ASSOC')) {
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// Use domesticate here instead of Database::escape_string because
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// it prevents ' to be slashed and the input (done by learnpath.class.php::toggle_visibility())
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// is done using domesticate()
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$myname = domesticate($row['name']);
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$mylink = 'newscorm/lp_controller.php?action=view&lp_id='.$row['id'].'&id_session='.$session_id;
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$sql2 = "SELECT * FROM $tbl_tool
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WHERE
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c_id = $course_id AND (
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name='$myname' AND
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image='scormbuilder.gif' AND
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link LIKE '$mylink%'
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)";
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$res2 = Database::query($sql2);
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if (Database::num_rows($res2) > 0) {
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$row2 = Database::fetch_array($res2);
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$pub = $row2['visibility'];
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} else {
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$pub = 'i';
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}
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// Check if visible.
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$vis = api_get_item_visibility(api_get_course_info($course_code), 'learnpath', $row['id'], $session_id);
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if (!empty($row['created_on']) && $row['created_on'] != '0000-00-00 00:00:00') {
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$row['created_on'] = $row['created_on'];
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} else {
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$row['created_on'] = '';
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}
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if (!empty($row['modified_on']) && $row['modified_on'] != '0000-00-00 00:00:00') {
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$row['modified_on'] = $row['modified_on'];
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} else {
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$row['modified_on'] = '';
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}
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if (!empty($row['publicated_on']) && $row['publicated_on'] != '0000-00-00 00:00:00') {
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$row['publicated_on'] = $row['publicated_on'];
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} else {
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$row['publicated_on'] = '';
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}
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if (!empty($row['expired_on']) && $row['expired_on'] != '0000-00-00 00:00:00') {
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$row['expired_on'] = $row['expired_on'];
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} else {
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$row['expired_on'] = '';
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}
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$this->list[$row['id']] = array(
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'lp_type' => $row['lp_type'],
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'lp_session' => $row['session_id'],
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'lp_name' => stripslashes($row['name']),
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'lp_desc' => stripslashes($row['description']),
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'lp_path' => $row['path'],
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'lp_view_mode' => $row['default_view_mod'],
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'lp_force_commit' => $row['force_commit'],
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'lp_maker' => stripslashes($row['content_maker']),
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'lp_proximity' => $row['content_local'],
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'lp_encoding' => api_get_system_encoding(),
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'lp_visibility' => $vis,
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'lp_published' => $pub,
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'lp_prevent_reinit' => $row['prevent_reinit'],
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'seriousgame_mode' => $row['seriousgame_mode'],
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'lp_scorm_debug' => $row['debug'],
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'lp_display_order' => $row['display_order'],
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'lp_preview_image' => stripslashes($row['preview_image']),
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'autolaunch' => $row['autolunch'],
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'session_id' => $row['session_id'],
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'created_on' => $row['created_on'],
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'modified_on' => $row['modified_on'],
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'publicated_on' => $row['publicated_on'],
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'expired_on' => $row['expired_on']
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);
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$names[$row['name']] = $row['id'];
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}
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$this->alpha_list = asort($names);
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}
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/**
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* Gets references to learnpaths for all learnpaths IDs kept in the local list.
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* This applies a transformation internally on list and ref_list and returns a copy of the refs list
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* @return array List of references to learnpath objects
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*/
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function get_refs()
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{
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foreach ($this->list as $id => $dummy) {
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$this->ref_list[$id] = new learnpath($this->course_code, $id, $this->user_id);
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}
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$this->refs_active = true;
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return $this->ref_list;
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}
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/**
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* Gets a table of the different learnpaths we have at the moment
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* @return array Learnpath info as [lp_id] => ([lp_type]=> ..., [lp_name]=>...,[lp_desc]=>...,[lp_path]=>...)
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*/
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function get_flat_list()
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{
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return $this->list;
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}
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/**
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* Gets a list of lessons of the given course_code and session_id
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* This functions doesn't need user_id
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* @param string $course_code Text code of the course
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* @param int $session_id Id of session
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* @return array List of lessons with lessons id as keys
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*/
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static function get_course_lessons($course_code, $session_id)
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{
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$tbl_course_lp = Database::get_course_table(TABLE_LP_MAIN);
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$course = api_get_course_info($course_code);
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//QUery
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$sql = "SELECT * FROM $tbl_course_lp
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WHERE c_id = %s "; //TODO AND session_id = %s ?
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$sql_query = sprintf($sql, $course['real_id']);
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$result = Database::query($sql_query);
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$lessons = array();
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while ($row = Database::fetch_array($result))
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{
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if (api_get_item_visibility($course, 'learnpath', $row['id'], $session_id))
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{
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$lessons[$row['id']] = $row;
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}
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}
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return $lessons;
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}
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}
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