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remotes/angel/1.11.x
Yannick Warnier 8 years ago
parent 54174a5d4a
commit 387638a60c
1 changed files with 260 additions and 254 deletions
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  1. 514
      main/gradebook/lib/be/learnpathlink.class.php

514
main/gradebook/lib/be/learnpathlink.class.php
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@ -9,261 +9,267 @@
*/
class LearnpathLink extends AbstractLink
{
private $course_info = null;
private $learnpath_table = null;
private $learnpath_data = null;
/**
* Constructor
*/
public function __construct()
{
parent::__construct();
$this->set_type(LINK_LEARNPATH);
}
/**
* Generate an array of learnpaths that a teacher hasn't created a link for.
* @return array 2-dimensional array - every element contains 2 subelements (id, name)
*/
public function get_not_created_links()
{
return false;
if (empty($this->course_code))
die('Error in get_not_created_links() : course code not set');
$tbl_grade_links = Database :: get_main_table(TABLE_MAIN_GRADEBOOK_LINK);
$sql = 'SELECT id, name from '.$this->get_learnpath_table().' lp
WHERE c_id = '.$this->course_id.' AND id NOT IN '
.' (SELECT ref_id FROM '.$tbl_grade_links
.' WHERE type = '.LINK_LEARNPATH
." AND course_code = '".$this->get_course_code()."'"
.') AND lp.session_id='.api_get_session_id().'';
$result = Database::query($sql);
$cats=array();
while ($data=Database::fetch_array($result)) {
$cats[] = array ($data['id'], $data['name']);
}
return $cats;
}
/**
* Generate an array of all learnpaths available.
* @return array 2-dimensional array - every element contains 2 subelements (id, name)
*/
public function get_all_links()
{
if (empty($this->course_code))
die('Error in get_not_created_links() : course code not set');
$session_id = api_get_session_id();
if (empty($session_id)) {
$session_condition = api_get_session_condition(0, true);
} else {
$session_condition = api_get_session_condition($session_id, true, true);
}
$sql = 'SELECT id, name FROM '.$this->get_learnpath_table().'
WHERE c_id = '.$this->course_id.' '.$session_condition.' ';
$result = Database::query($sql);
$cats = array();
while ($data=Database::fetch_array($result)) {
$cats[] = array ($data['id'], $data['name']);
}
return $cats;
}
/**
* Has anyone used this learnpath yet ?
*/
public function has_results()
{
$tbl_stats = Database::get_course_table(TABLE_LP_VIEW);
$sql = "SELECT count(id) AS number FROM $tbl_stats
WHERE c_id = ".$this->course_id." AND lp_id = ".$this->get_ref_id();
$result = Database::query($sql);
$number = Database::fetch_array($result,'NUM');
return ($number[0] != 0);
}
/**
* Get the progress of this learnpath. Only the last attempt are taken into account.
* @param $stud_id student id (default: all students who have results - then the average is returned)
* @return array (score, max) if student is given
* array (sum of scores, number of scores) otherwise
* or null if no scores available
*/
public function calc_score($stud_id = null, $type = null)
{
$tbl_stats = Database::get_course_table(TABLE_LP_VIEW);
$session_id = api_get_session_id();
$sql = "SELECT * FROM $tbl_stats
private $course_info = null;
private $learnpath_table = null;
private $learnpath_data = null;
/**
* Constructor
*/
public function __construct()
{
parent::__construct();
$this->set_type(LINK_LEARNPATH);
}
/**
* Generate an array of learnpaths that a teacher hasn't created a link for.
* @return array 2-dimensional array - every element contains 2 subelements (id, name)
*/
public function get_not_created_links()
{
return false;
if (empty($this->course_code)) {
die('Error in get_not_created_links() : course code not set');
}
$tbl_grade_links = Database:: get_main_table(TABLE_MAIN_GRADEBOOK_LINK);
$sql = 'SELECT id, name FROM ' . $this->get_learnpath_table() . ' lp
WHERE c_id = ' . $this->course_id . ' AND id NOT IN '
. ' (SELECT ref_id FROM ' . $tbl_grade_links
. ' WHERE type = ' . LINK_LEARNPATH
. " AND course_code = '" . $this->get_course_code() . "'"
. ') AND lp.session_id=' . api_get_session_id() . '';
$result = Database::query($sql);
$cats = array();
while ($data = Database::fetch_array($result)) {
$cats[] = array($data['id'], $data['name']);
}
return $cats;
}
/**
* Generate an array of all learnpaths available.
* @return array 2-dimensional array - every element contains 2 subelements (id, name)
*/
public function get_all_links()
{
if (empty($this->course_code)) {
die('Error in get_not_created_links() : course code not set');
}
$session_id = api_get_session_id();
if (empty($session_id)) {
$session_condition = api_get_session_condition(0, true);
} else {
$session_condition = api_get_session_condition($session_id, true, true);
}
$sql = 'SELECT id, name FROM ' . $this->get_learnpath_table() . '
WHERE c_id = ' . $this->course_id . ' ' . $session_condition . ' ';
$result = Database::query($sql);
$cats = array();
while ($data = Database::fetch_array($result)) {
$cats[] = array($data['id'], $data['name']);
}
return $cats;
}
/**
* Has anyone used this learnpath yet ?
*/
public function has_results()
{
$tbl_stats = Database::get_course_table(TABLE_LP_VIEW);
$sql = "SELECT count(id) AS number FROM $tbl_stats
WHERE c_id = " . $this->course_id . " AND lp_id = " . $this->get_ref_id();
$result = Database::query($sql);
$number = Database::fetch_array($result, 'NUM');
return ($number[0] != 0);
}
/**
* Get the progress of this learnpath. Only the last attempt are taken into account.
* @param $stud_id student id (default: all students who have results - then the average is returned)
* @return array (score, max) if student is given
* array (sum of scores, number of scores) otherwise
* or null if no scores available
*/
public function calc_score($stud_id = null, $type = null)
{
$tbl_stats = Database::get_course_table(TABLE_LP_VIEW);
$session_id = api_get_session_id();
$sql = "SELECT * FROM $tbl_stats
WHERE
c_id = ".$this->course_id." AND
lp_id = ".$this->get_ref_id()." AND
c_id = " . $this->course_id . " AND
lp_id = " . $this->get_ref_id() . " AND
session_id = $session_id ";
if (isset($stud_id))
$sql .= ' AND user_id = '.intval($stud_id);
// order by id, that way the student's first attempt is accessed first
$sql .= ' ORDER BY view_count DESC';
$scores = Database::query($sql);
// for 1 student
if (isset($stud_id)) {
if ($data = Database::fetch_assoc($scores)) {
return array ($data['progress'], 100);
} else
return null;
} else {
// all students -> get average
$students = array(); // user list, needed to make sure we only
// take first attempts into account
$rescount = 0;
$sum = 0;
$bestResult = 0;
$sumResult = 0;
while ($data = Database::fetch_array($scores)) {
if (!(array_key_exists($data['user_id'], $students))) {
$students[$data['user_id']] = $data['progress'];
$rescount++;
$sum += $data['progress'] / 100;
$sumResult += $data['progress'];
if ($data['progress'] > $bestResult) {
$bestResult = $data['progress'];
}
}
}
if ($rescount == 0) {
return null;
} else {
switch ($type) {
case 'best':
return array($bestResult, 100);
break;
case 'average':
return array($sumResult/$rescount, 100);
break;
case 'ranking':
return AbstractLink::getCurrentUserRanking($stud_id, $students);
break;
default:
return array($sum, $rescount);
break;
}
}
}
}
/**
* Get URL where to go to if the user clicks on the link.
*/
public function get_link()
{
$session_id = api_get_session_id();
$url = api_get_path(WEB_CODE_PATH) . 'lp/lp_controller.php?'.api_get_cidreq_params($this->get_course_code(), $session_id).'&gradebook=view';
if (!api_is_allowed_to_edit() || $this->calc_score(api_get_user_id()) == null) {
$url .= '&action=view&lp_id='.$this->get_ref_id();
} else {
$url .= '&action=build&lp_id='.$this->get_ref_id();
}
return $url;
}
/**
* Get name to display: same as learnpath title
*/
public function get_name()
{
$data = $this->get_learnpath_data();
return $data['name'];
}
/**
* Get description to display: same as learnpath description
*/
public function get_description()
{
$data = $this->get_learnpath_data();
return $data['description'];
}
/**
* Check if this still links to a learnpath
*/
public function is_valid_link() {
$sql = 'SELECT count(id) FROM '.$this->get_learnpath_table().'
WHERE c_id = '.$this->course_id.' AND id = '.$this->get_ref_id().' ';
$result = Database::query($sql);
$number = Database::fetch_row($result,'NUM');
return ($number[0] != 0);
}
public function get_type_name()
{
return get_lang('LearningPaths');
}
public function needs_name_and_description()
{
return false;
}
public function needs_max()
{
return false;
}
public function needs_results()
{
return false;
}
public function is_allowed_to_change_name()
{
return false;
}
// INTERNAL FUNCTIONS
/**
* Lazy load function to get the database table of the learnpath
*/
private function get_learnpath_table()
{
$this->learnpath_table = Database :: get_course_table(TABLE_LP_MAIN);
return $this->learnpath_table;
}
/**
* Lazy load function to get the database contents of this learnpath
*/
private function get_learnpath_data()
{
if (!isset($this->learnpath_data)) {
$sql = 'SELECT * FROM '.$this->get_learnpath_table().'
WHERE c_id = '.$this->course_id.' AND id = '.$this->get_ref_id().' ';
$result = Database::query($sql);
$this->learnpath_data = Database::fetch_array($result);
}
return $this->learnpath_data;
}
public function get_icon_name()
{
return 'learnpath';
}
if (isset($stud_id)) {
$sql .= ' AND user_id = ' . intval($stud_id);
}
// order by id, that way the student's first attempt is accessed first
$sql .= ' ORDER BY view_count DESC';
$scores = Database::query($sql);
// for 1 student
if (isset($stud_id)) {
if ($data = Database::fetch_assoc($scores)) {
return array($data['progress'], 100);
} else {
return null;
}
} else {
// all students -> get average
$students = array(); // user list, needed to make sure we only
// take first attempts into account
$rescount = 0;
$sum = 0;
$bestResult = 0;
$sumResult = 0;
while ($data = Database::fetch_array($scores)) {
if (!(array_key_exists($data['user_id'], $students))) {
$students[$data['user_id']] = $data['progress'];
$rescount++;
$sum += $data['progress'] / 100;
$sumResult += $data['progress'];
if ($data['progress'] > $bestResult) {
$bestResult = $data['progress'];
}
}
}
if ($rescount == 0) {
return null;
} else {
switch ($type) {
case 'best':
return array($bestResult, 100);
break;
case 'average':
return array($sumResult / $rescount, 100);
break;
case 'ranking':
return AbstractLink::getCurrentUserRanking($stud_id, $students);
break;
default:
return array($sum, $rescount);
break;
}
}
}
}
/**
* Get URL where to go to if the user clicks on the link.
*/
public function get_link()
{
$session_id = api_get_session_id();
$url = api_get_path(WEB_CODE_PATH) . 'lp/lp_controller.php?' . api_get_cidreq_params($this->get_course_code(),
$session_id) . '&gradebook=view';
if (!api_is_allowed_to_edit() || $this->calc_score(api_get_user_id()) == null) {
$url .= '&action=view&lp_id=' . $this->get_ref_id();
} else {
$url .= '&action=build&lp_id=' . $this->get_ref_id();
}
return $url;
}
/**
* Get name to display: same as learnpath title
*/
public function get_name()
{
$data = $this->get_learnpath_data();
return $data['name'];
}
/**
* Get description to display: same as learnpath description
*/
public function get_description()
{
$data = $this->get_learnpath_data();
return $data['description'];
}
/**
* Check if this still links to a learnpath
*/
public function is_valid_link()
{
$sql = 'SELECT count(id) FROM ' . $this->get_learnpath_table() . '
WHERE c_id = ' . $this->course_id . ' AND id = ' . $this->get_ref_id() . ' ';
$result = Database::query($sql);
$number = Database::fetch_row($result, 'NUM');
return ($number[0] != 0);
}
public function get_type_name()
{
return get_lang('LearningPaths');
}
public function needs_name_and_description()
{
return false;
}
public function needs_max()
{
return false;
}
public function needs_results()
{
return false;
}
public function is_allowed_to_change_name()
{
return false;
}
// INTERNAL FUNCTIONS
/**
* Lazy load function to get the database table of the learnpath
*/
private function get_learnpath_table()
{
$this->learnpath_table = Database:: get_course_table(TABLE_LP_MAIN);
return $this->learnpath_table;
}
/**
* Lazy load function to get the database contents of this learnpath
*/
private function get_learnpath_data()
{
if (!isset($this->learnpath_data)) {
$sql = 'SELECT * FROM ' . $this->get_learnpath_table() . '
WHERE c_id = ' . $this->course_id . ' AND id = ' . $this->get_ref_id() . ' ';
$result = Database::query($sql);
$this->learnpath_data = Database::fetch_array($result);
}
return $this->learnpath_data;
}
public function get_icon_name()
{
return 'learnpath';
}
}

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