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

162 lines
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<?php
/* For licensing terms, see /license.txt */
/**
* File containing the declaration of the learnpathList class.
* @package chamilo.learnpath
* @author Yannick Warnier <ywarnier@beeznest.org>
*/
/**
* This class is only a learning path list container with several practical methods for sorting the list and
* provide links to specific paths
* @uses Database.lib.php to use the database
* @uses learnpath.class.php to generate learnpath objects to get in the list
*/
class learnpathList {
public $list = array(); // Holds a flat list of learnpaths data from the database.
public $ref_list = array(); // Holds a list of references to the learnpaths objects (only filled by get_refs()).
public $alpha_list = array(); // Holds a flat list of learnpaths sorted by alphabetical name order.
public $course_code;
public $user_id;
public $refs_active = false;
/**
* This method is the constructor for the learnpathList. It gets a list of available learning paths from
* the database and creates the learnpath objects. This list depends on the user that is connected
* (only displays) items if he has enough permissions to view them.
* @param integer User ID
* @param string Optional course code (otherwise we use api_get_course_id())
* @param int Optional session id (otherwise we use api_get_session_id())
* @return void
*/
function __construct($user_id, $course_code = '', $session_id = null, $order_by = null, $check_publication_dates = false) {
$course_info = api_get_course_info($course_code);
$lp_table = Database::get_course_table(TABLE_LP_MAIN);
$tbl_tool = Database::get_course_table(TABLE_TOOL_LIST);
$this->course_code = $course_code;
$this->user_id = $user_id;
$course_id = $course_info['real_id'];
// Condition for the session.
if (isset($session_id)) {
$session_id = intval($session_id);
} else {
$session_id = api_get_session_id();
}
$condition_session = api_get_session_condition($session_id, true, true);
$order = "ORDER BY display_order ASC, name ASC";
if (isset($order_by)) {
$order = Database::parse_conditions(array('order'=>$order_by));
}
$now = api_get_utc_datetime();
$time_conditions = '';
if ($check_publication_dates) {
$time_conditions = " AND ( (publicated_on <> '0000-00-00 00:00:00' AND publicated_on < '$now' AND expired_on <> '0000-00-00 00:00:00' AND expired_on > '$now' ) OR
(publicated_on <> '0000-00-00 00:00:00' AND publicated_on < '$now' AND expired_on = '0000-00-00 00:00:00') OR
(publicated_on = '0000-00-00 00:00:00' AND expired_on <> '0000-00-00 00:00:00' AND expired_on > '$now') OR
(publicated_on = '0000-00-00 00:00:00' AND expired_on = '0000-00-00 00:00:00' ))
";
}
$sql = "SELECT * FROM $lp_table WHERE c_id = $course_id $time_conditions $condition_session $order";
$res = Database::query($sql);
$names = array();
while ($row = Database::fetch_array($res,'ASSOC')) {
// Check if published.
$pub = '';
// Use domesticate here instead of Database::escape_string because
// it prevents ' to be slashed and the input (done by learnpath.class.php::toggle_visibility())
// is done using domesticate()
$myname = domesticate($row['name']);
$mylink = 'newscorm/lp_controller.php?action=view&lp_id='.$row['id'].'&id_session='.$session_id;
$sql2="SELECT * FROM $tbl_tool WHERE c_id = $course_id AND (name='$myname' and image='scormbuilder.gif' and link LIKE '$mylink%')";
//error_log('New LP - learnpathList::__construct - getting visibility - '.$sql2, 0);
$res2 = Database::query($sql2);
if (Database::num_rows($res2) > 0) {
$row2 = Database::fetch_array($res2);
$pub = $row2['visibility'];
} else {
$pub = 'i';
}
// Check if visible.
$vis = api_get_item_visibility(api_get_course_info($course_code), 'learnpath', $row['id'], $session_id);
if (!empty($row['created_on']) && $row['created_on'] != '0000-00-00 00:00:00') {
$row['created_on'] = $row['created_on'];
} else {
$row['created_on'] = '';
}
if (!empty($row['modified_on']) && $row['modified_on'] != '0000-00-00 00:00:00') {
$row['modified_on'] = $row['modified_on'];
} else {
$row['modified_on'] = '';
}
if (!empty($row['publicated_on']) && $row['publicated_on'] != '0000-00-00 00:00:00') {
$row['publicated_on'] = $row['publicated_on'];
} else {
$row['publicated_on'] = '';
}
if (!empty($row['expired_on']) && $row['expired_on'] != '0000-00-00 00:00:00') {
$row['expired_on'] = $row['expired_on'];
} else {
$row['expired_on'] = '';
}
$this->list[$row['id']] = array(
'lp_type' => $row['lp_type'],
'lp_session' => $row['session_id'],
'lp_name' => stripslashes($row['name']),
'lp_desc' => stripslashes($row['description']),
'lp_path' => $row['path'],
'lp_view_mode' => $row['default_view_mod'],
'lp_force_commit' => $row['force_commit'],
'lp_maker' => stripslashes($row['content_maker']),
'lp_proximity' => $row['content_local'],
//'lp_encoding' => $row['default_encoding'],
'lp_encoding' => api_get_system_encoding(), // Chamilo 1.8.8: We intend always to use the system encoding.
'lp_visibility' => $vis,
'lp_published' => $pub,
'lp_prevent_reinit' => $row['prevent_reinit'],
'seriousgame_mode' => $row['seriousgame_mode'],
'lp_scorm_debug' => $row['debug'],
'lp_display_order' => $row['display_order'],
'lp_preview_image' => stripslashes($row['preview_image']),
'autolaunch' => $row['autolunch'],
'session_id' => $row['session_id'],
'created_on' => $row['created_on'],
'modified_on' => $row['modified_on'],
'publicated_on' => $row['publicated_on'],
'expired_on' => $row['expired_on']
);
$names[$row['name']] = $row['id'];
}
$this->alpha_list = asort($names);
}
/**
* Gets references to learnpaths for all learnpaths IDs kept in the local list.
* This applies a transformation internally on list and ref_list and returns a copy of the refs list
* @return array List of references to learnpath objects
*/
function get_refs() {
foreach ($this->list as $id => $dummy) {
$this->ref_list[$id] = new learnpath($this->course_code, $id, $this->user_id);
}
$this->refs_active = true;
return $this->ref_list;
}
/**
* Gets a table of the different learnpaths we have at the moment
* @return array Learnpath info as [lp_id] => ([lp_type]=> ..., [lp_name]=>...,[lp_desc]=>...,[lp_path]=>...)
*/
function get_flat_list() {
return $this->list;
}
}