* @package chamilo.attendance
*/
/**
* Attendance can be used to instanciate objects or as a library to manage attendances
* @package chamilo.attendance
*/
class Attendance
{
private $session_id;
private $course_id;
private $date_time;
private $name;
private $description;
private $attendance_qualify_title;
private $attendance_weight;
public function __construct() {}
/**
* Get the total number of attendance inside current course and current session
* @see SortableTable#get_total_number_of_items()
*/
function get_number_of_attendances() {
$tbl_attendance = Database :: get_course_table(TABLE_ATTENDANCE);
$session_id = api_get_session_id();
$sql = "SELECT COUNT(att.id) AS total_number_of_items FROM $tbl_attendance att WHERE att.active = 1 = att.session_id = '$session_id' ";
$res = Database::query($sql);
$res = Database::query($sql);
$obj = Database::fetch_object($res);
return $obj->total_number_of_items;
}
/**
* Get attendance list
* @param string course code (optional)
* @param int session id (optional)
* @return array attendances list
*/
function get_attendances_list($course_code = '', $session_id = null) {
// initializing database table and variables
$tbl_attendance = Database :: get_course_table(TABLE_ATTENDANCE);
$data = array();
if (!empty($course_code)) {
$course_info = api_get_course_info($course_code);
$tbl_attendance = Database :: get_course_table(TABLE_ATTENDANCE, $course_info['dbName']);
}
$condition_session = '';
if (isset($session_id)) {
$session_id = intval($session_id);
$condition_session = ' WHERE session_id = '.$session_id;
}
// get attendance data
$sql = "SELECT * FROM $tbl_attendance $condition_session ";
$rs = Database::query($sql);
if (Database::num_rows($rs) > 0){
while ($row = Database::fetch_array($rs)) {
$data[$row['id']] = $row;
}
}
return $data;
}
/**
* Get the attendaces to display on the current page (fill the sortable-table)
* @param int offset of first user to recover
* @param int Number of users to get
* @param int Column to sort on
* @param string Order (ASC,DESC)
* @see SortableTable#get_table_data($from)
*/
function get_attendance_data($from, $number_of_items, $column, $direction) {
$tbl_attendance = Database :: get_course_table(TABLE_ATTENDANCE);
$session_id = api_get_session_id();
$column = intval($column);
$from = intval($from);
$number_of_items = intval($number_of_items);
if (!in_array($direction, array('ASC','DESC'))) {
$direction = 'ASC';
}
$sql = "SELECT
att.id AS col0,
att.name AS col1,
att.description AS col2,
att.attendance_qualify_max AS col3
FROM $tbl_attendance att
WHERE att.session_id = '$session_id' AND att.active = 1
ORDER BY col$column $direction LIMIT $from,$number_of_items ";
$res = Database::query($sql);
$attendances = array ();
$param_gradebook = '';
if (isset($_SESSION['gradebook'])) {
$param_gradebook = '&gradebook='.$_SESSION['gradebook'];
}
while ($attendance = Database::fetch_row($res)) {
$student_param = '';
if (api_is_drh() && ($_GET['student_id'])) {
$student_param = '&student_id='.Security::remove_XSS($_GET['student_id']);
}
$attendance[1] = ''.$attendance[1].'';
$attendance[3] = ''.$attendance[3].'';
if (api_is_allowed_to_edit(null, true)) {
$actions = '';
$actions .= ''.Display::return_icon('edit.gif',get_lang('Edit')).' ';
$actions .= ''.Display::return_icon('delete.gif',get_lang('Delete')).'';
$attendances[] = array($attendance[0], $attendance[1], $attendance[2], $attendance[3],$actions);
} else {
$attendance[0] = ' ';
$attendances[] = array($attendance[0], $attendance[1], $attendance[2], $attendance[3]);
}
}
return $attendances;
}
/**
* Get the attendaces by id to display on the current page
* @param int attendance id
* @return array attendance data
*/
public function get_attendance_by_id($attendance_id) {
$tbl_attendance = Database :: get_course_table(TABLE_ATTENDANCE);
$sesion_id = api_get_session_id();
$attendance_id = intval($attendance_id);
$attendance_data = array();
$sql = "SELECT * FROM $tbl_attendance WHERE id = '$attendance_id'";
$res = Database::query($sql);
if (Database::num_rows($res) > 0) {
while ($row = Database::fetch_array($res)) {
$attendance_data = $row;
}
}
return $attendance_data;
}
/**
* add attendaces inside table
* @param bool true for adding link in gradebook or false otherwise (optional)
* @return int last attendance id
*/
public function attendance_add($link_to_gradebook = false) {
global $_course;
$tbl_attendance = Database :: get_course_table(TABLE_ATTENDANCE);
$table_link = Database :: get_main_table(TABLE_MAIN_GRADEBOOK_LINK);
$session_id = api_get_session_id();
$user_id = api_get_user_id();
$course_code = api_get_course_id();
$title_gradebook= Database::escape_string($this->attendance_qualify_title);
$value_calification = 0;
$weight_calification = floatval($this->attendance_weight);
$sql = "INSERT INTO $tbl_attendance
SET name ='".Database::escape_string($this->name)."',
description = '".Database::escape_string($this->description)."',
attendance_qualify_title = '$title_gradebook',
attendance_weight = '$weight_calification',
session_id = '$session_id'";
Database::query($sql);
$affected_rows = Database::affected_rows();
$last_id = 0;
if (!empty($affected_rows)) {
// save inside item property table
$last_id = Database::insert_id();
api_item_property_update($_course, TOOL_ATTENDANCE, $last_id,"AttendanceAdded", $user_id);
}
// add link to gradebook
if ($link_to_gradebook) {
$description = '';
$link_id=is_resource_in_course_gradebook($course_code,7,$last_id,$session_id);
if ($link_id==false) {
add_resource_to_course_gradebook($course_code, 7, $last_id, $title_gradebook,$weight_calification,$value_calification,$description,time(),1,$session_id);
} else {
Database::query('UPDATE '.$table_link.' SET weight='.$weight_calification.' WHERE id='.$link_id.'');
}
}
return $last_id;
}
/**
* edit attendaces inside table
* @param int attendance id
* @param bool true for adding link in gradebook or false otherwise (optional)
* @return int affected rows
*/
public function attendance_edit($attendance_id, $link_to_gradebook = false) {
global $_course;
$tbl_attendance = Database :: get_course_table(TABLE_ATTENDANCE);
$table_link = Database :: get_main_table(TABLE_MAIN_GRADEBOOK_LINK);
$session_id = api_get_session_id();
$user_id = api_get_user_id();
$attendance_id = intval($attendance_id);
$course_code = api_get_course_id();
$title_gradebook = Database::escape_string($this->attendance_qualify_title);
$value_calification = 0;
$weight_calification = floatval($this->attendance_weight);
$sql = "UPDATE $tbl_attendance
SET name ='".Database::escape_string($this->name)."',
description = '".Database::escape_string($this->description)."',
attendance_qualify_title = '".$title_gradebook."',
attendance_weight = '".$weight_calification."'
WHERE id = '$attendance_id'";
Database::query($sql);
$affected_rows = Database::affected_rows();
if (!empty($affected_rows)) {
// update row item property table
$last_id = Database::insert_id();
api_item_property_update($_course, TOOL_ATTENDANCE, $attendance_id,"AttendanceUpdated", $user_id);
}
// add link to gradebook
if ($link_to_gradebook) {
$description = '';
$link_id=is_resource_in_course_gradebook($course_code,7,$attendance_id,$session_id);
if ($link_id==false) {
add_resource_to_course_gradebook($course_code, 7, $attendance_id, $title_gradebook,$weight_calification,$value_calification,$description,time(),1,$session_id);
} else {
Database::query('UPDATE '.$table_link.' SET weight='.$weight_calification.' WHERE id='.$link_id.'');
}
}
return $affected_rows;
}
/**
* delete attendaces
* @param int attendance id
* @return int affected rows
*/
public function attendance_delete($attendance_id) {
global $_course;
$tbl_attendance = Database :: get_course_table(TABLE_ATTENDANCE);
$user_id = api_get_user_id();
if (is_array($attendance_id)) {
foreach ($attendance_id as $id) {
$id = intval($id);
$sql = "UPDATE $tbl_attendance SET active = 0 WHERE id = '$id'";
Database::query($sql);
$affected_rows = Database::affected_rows();
if (!empty($affected_rows)) {
// update row item property table
api_item_property_update($_course, TOOL_ATTENDANCE, $id,"delete", $user_id);
}
}
} else {
$attendance_id = intval($attendance_id);
$sql = "UPDATE $tbl_attendance SET active = 0 WHERE id = '$attendance_id'";
Database::query($sql);
$affected_rows = Database::affected_rows();
if (!empty($affected_rows)) {
// update row item property table
api_item_property_update($_course, TOOL_ATTENDANCE, $attendance_id,"delete", $user_id);
}
}
return $affected_rows;
}
/**
* get registered users inside current course
* @param int attendance id for showing attendance result field (optional)
* @return array users data
*/
public function get_users_rel_course($attendance_id = 0) {
$current_session_id = api_get_session_id();
$current_course_id = api_get_course_id();
if (!empty($current_session_id)) {
$a_course_users = CourseManager :: get_user_list_from_course_code($current_course_id, true, $current_session_id,'','lastname');
} else {
$a_course_users = CourseManager :: get_user_list_from_course_code($current_course_id, false, 0, '','lastname');
}
// get registered users inside current course
$a_users = array();
foreach ($a_course_users as $key => $value) {
$uid = intval($value['user_id']);
$status = $value['status'];
$user_status_in_course = CourseManager::get_user_in_course_status($uid, $current_course_id);
if ($uid <= 1 || $status == DRH || $user_status_in_course == COURSEMANAGER) continue;
if (!empty($attendance_id)) {
$attendance_id = intval($attendance_id);
$user_faults = $this->get_faults_of_user($uid, $attendance_id);
$value['attendance_result'] = $user_faults['faults'].'/'.$user_faults['total'].' ('.$user_faults['faults_porcent'].'%)';
$value['result_color_bar'] = $user_faults['color_bar'];
}
// user's picture
$image_path = UserManager::get_user_picture_path_by_id($uid, 'web', false);
$user_profile = UserManager::get_picture_user($uid, $image_path['file'], 22, USER_IMAGE_SIZE_SMALL, ' width="22" height="22" ');
if (!api_is_anonymous()) {
if (!empty($image_path['file'])) {
$photo = '!['.api_get_person_name($value['firstname'], $value['lastname']).']('.$user_profile['file'].' "'.api_get_person_name($value['firstname'], $value['lastname']).'")
';
} else {
$photo = '';
}
} else {
$photo = '';
}
$value['photo'] = $photo;
$a_users[$key] = $value;
}
return $a_users;
}
/**
* add attendaces sheet inside table
* @param int attendance calendar id
* @param array present users during current class
* @param int attendance id
* @return int affected rows
*/
public function attendance_sheet_add($calendar_id,$users_present,$attendance_id) {
$tbl_attendance_sheet = Database::get_course_table(TABLE_ATTENDANCE_SHEET);
$tbl_attendance_calendar= Database::get_course_table(TABLE_ATTENDANCE_CALENDAR);
$tbl_attendance_result = Database::get_course_table(TABLE_ATTENDANCE_RESULT);
$tbl_attendance = Database::get_course_table(TABLE_ATTENDANCE);
$calendar_id = intval($calendar_id);
$attendance_id = intval($attendance_id);
$users = $this->get_users_rel_course();
$user_ids = array_keys($users);
$users_absent = array_diff($user_ids,$users_present);
$affected_rows = 0;
// save users present in class
foreach ($users_present as $user_present) {
$uid = intval($user_present);
// check if user already was registered with the $calendar_id
$sql = "SELECT user_id FROM $tbl_attendance_sheet WHERE user_id='$uid' AND attendance_calendar_id = '$calendar_id'";
$rs = Database::query($sql);
if (Database::num_rows($rs) == 0) {
$sql = "INSERT INTO $tbl_attendance_sheet SET user_id ='$uid', attendance_calendar_id = '$calendar_id', presence = 1";
Database::query($sql);
$affected_rows = Database::affected_rows();
} else {
$sql = "UPDATE $tbl_attendance_sheet SET presence = 1 WHERE user_id ='$uid' AND attendance_calendar_id = '$calendar_id'";
Database::query($sql);
$affected_rows = Database::affected_rows();
}
}
// save users absent in class
foreach ($users_absent as $user_absent) {
$uid = intval($user_absent);
// check if user already was registered with the $calendar_id
$sql = "SELECT user_id FROM $tbl_attendance_sheet WHERE user_id='$uid' AND attendance_calendar_id = '$calendar_id'";
$rs = Database::query($sql);
if (Database::num_rows($rs) == 0) {
$sql = "INSERT INTO $tbl_attendance_sheet SET user_id ='$uid', attendance_calendar_id = '$calendar_id', presence = 0";
Database::query($sql);
$affected_rows = Database::affected_rows();
} else {
$sql = "UPDATE $tbl_attendance_sheet SET presence = 0 WHERE user_id ='$uid' AND attendance_calendar_id = '$calendar_id'";
Database::query($sql);
$affected_rows = Database::affected_rows();
}
}
// update done_attendance inside attendance calendar table
$sql = "UPDATE $tbl_attendance_calendar SET done_attendance = 1 WHERE id = '$calendar_id'";
Database::query($sql);
// save users' results
$this->update_users_results($user_ids, $attendance_id);
return $affected_rows;
}
/**
* update users' attendance results
* @param array registered users inside current course
* @param int attendance id
* @return void
*/
public function update_users_results($user_ids, $attendance_id) {
$tbl_attendance_sheet = Database::get_course_table(TABLE_ATTENDANCE_SHEET);
$tbl_attendance_calendar= Database::get_course_table(TABLE_ATTENDANCE_CALENDAR);
$tbl_attendance_result = Database::get_course_table(TABLE_ATTENDANCE_RESULT);
$tbl_attendance = Database::get_course_table(TABLE_ATTENDANCE);
$attendance_id = intval($attendance_id);
// fill results about presence of students
$attendance_calendar = $this->get_attendance_calendar($attendance_id);
$calendar_ids = array();
// get all dates from calendar by current attendance
foreach ($attendance_calendar as $cal) {
$calendar_ids[] = $cal['id'];
}
// get count of presences by users inside current attendance and save like results
$count_presences = 0;
if (count($user_ids) > 0) {
foreach ($user_ids as $uid) {
$count_presences = 0;
if (count($calendar_ids) > 0) {
$sql = "SELECT count(presence) as count_presences FROM $tbl_attendance_sheet WHERE user_id = '$uid' AND attendance_calendar_id IN(".implode(',',$calendar_ids).") AND presence = 1";
$rs_count = Database::query($sql);
$row_count = Database::fetch_array($rs_count);
$count_presences = $row_count['count_presences'];
}
// save results
$sql = "SELECT id FROM $tbl_attendance_result WHERE user_id='$uid' AND attendance_id='$attendance_id'";
$rs_check_result = Database::query($sql);
if (Database::num_rows($rs_check_result) > 0) {
// update result
$sql = "UPDATE $tbl_attendance_result SET score='$count_presences' WHERE user_id='$uid' AND attendance_id='$attendance_id'";
Database::query($sql);
} else {
// insert new result
$sql = "INSERT INTO $tbl_attendance_result SET user_id='$uid', attendance_id = '$attendance_id', score='$count_presences'";
Database::query($sql);
}
}
}
// update attendance qualify max
$count_done_calendar = $this->get_done_attendance_calendar($attendance_id);
$sql = "UPDATE $tbl_attendance SET attendance_qualify_max='$count_done_calendar' WHERE id = '$attendance_id'";
Database::query($sql);
}
/**
* Get number of done attendances inside current sheet
* @param int attendance id
* @return int number of done attendances
*/
public function get_done_attendance_calendar($attendance_id) {
$tbl_attendance_calendar = Database::get_course_table(TABLE_ATTENDANCE_CALENDAR);
$attendance_id = intval($attendance_id);
$sql = "SELECT count(done_attendance) as count FROM $tbl_attendance_calendar WHERE attendance_id = '$attendance_id' AND done_attendance=1";
$rs = Database::query($sql);
$row = Database::fetch_array($rs);
$count = $row['count'];
return $count;
}
/**
* Get results of faults (absents) by user
* @param int user id
* @param int attendance id
* @return array results containing number of faults, total done attendance, porcent of faults and color depend on result (red, orange)
*/
public function get_faults_of_user($user_id, $attendance_id) {
// initializing database table and variables
$tbl_attendance_result = Database::get_course_table(TABLE_ATTENDANCE_RESULT);
$user_id = intval($user_id);
$attendance_id = intval($attendance_id);
$results = array();
$attendance_data = $this->get_attendance_by_id($attendance_id);
$total_done_attendance = $attendance_data['attendance_qualify_max'];
$attendance_user_score = $this->get_user_score($user_id, $attendance_id);
// calculate results
$faults = $total_done_attendance-$attendance_user_score;
$faults = $faults > 0 ? $faults:0;
$faults_porcent = $total_done_attendance > 0 ?round(($faults*100)/$total_done_attendance,0):0;
$results['faults'] = $faults;
$results['total'] = $total_done_attendance;
$results['faults_porcent'] = $faults_porcent;
$color_bar = '';
if ($faults_porcent > 25 ) {
$color_bar = '#F11';
} else if ($faults_porcent > 10) {
$color_bar = '#F90';
}
$results['color_bar'] = $color_bar;
return $results;
}
/**
* Get results of faults average for all courses by user
* @param int user id
* @return array results containing number of faults, total done attendance, porcent of faults and color depend on result (red, orange)
*/
public function get_faults_average_inside_courses($user_id) {
// get all courses of current user
$courses = CourseManager::get_courses_list_by_user_id($user_id, true);
$user_id = intval($user_id);
$results = array();
$total_faults = $total_weight = $porcent = 0;
foreach ($courses as $course) {
$course_code = $course['code'];
$course_info = api_get_course_info($course_code);
$tbl_attendance_result = Database::get_course_table(TABLE_ATTENDANCE_RESULT, $course_info['dbName']);
$attendances_by_course = $this->get_attendances_list($course_code);
foreach ($attendances_by_course as $attendance) {
// get total faults and total weight
$attendance_id = $attendance['id'];
$total_done_attendance = $attendance['attendance_qualify_max'];
$sql = "SELECT score FROM $tbl_attendance_result WHERE user_id='$user_id' AND attendance_id='$attendance_id'";
$rs = Database::query($sql);
$score = 0;
if (Database::num_rows($rs) > 0) {
$row = Database::fetch_array($rs);
$score = $row['score'];
}
$faults = $total_done_attendance-$score;
$faults = $faults > 0 ? $faults:0;
$total_faults += $faults;
$total_weight += $total_done_attendance;
}
}
$porcent = $total_weight > 0 ?round(($total_faults*100)/$total_weight,0):0;
$results['faults'] = $total_faults;
$results['total'] = $total_weight;
$results['porcent'] = $porcent;
return $results;
}
/**
* Get results of faults average by course
* @param int user id
* @param int Session id (optional)
* @return array results containing number of faults, total done attendance, porcent of faults and color depend on result (red, orange)
*/
public function get_faults_average_by_course($user_id, $course_code, $session_id = null) {
// Database tables and variables
$course_info = api_get_course_info($course_code);
$tbl_attendance_result = Database::get_course_table(TABLE_ATTENDANCE_RESULT, $course_info['dbName']);
$user_id = intval($user_id);
$results = array();
$total_faults = $total_weight = $porcent = 0;
$attendances_by_course = $this->get_attendances_list($course_code, $session_id);
foreach ($attendances_by_course as $attendance) {
// get total faults and total weight
$attendance_id = $attendance['id'];
$total_done_attendance = $attendance['attendance_qualify_max'];
$sql = "SELECT score FROM $tbl_attendance_result WHERE user_id='$user_id' AND attendance_id='$attendance_id'";
$rs = Database::query($sql);
$score = 0;
if (Database::num_rows($rs) > 0) {
$row = Database::fetch_array($rs);
$score = $row['score'];
}
$faults = $total_done_attendance-$score;
$faults = $faults > 0 ? $faults:0;
$total_faults += $faults;
$total_weight += $total_done_attendance;
}
$porcent = $total_weight > 0 ?round(($total_faults*100)/$total_weight,0):0;
$results['faults'] = $total_faults;
$results['total'] = $total_weight;
$results['porcent'] = $porcent;
return $results;
}
/**
* Get registered users' attendance sheet inside current course
* @param int attendance id
* @param int user id for showing data for only one user (optional)
* @return array users attendance sheet data
*/
public function get_users_attendance_sheet($attendance_id, $user_id = 0) {
global $dateTimeFormatLong;
$tbl_attendance_sheet = Database::get_course_table(TABLE_ATTENDANCE_SHEET);
$tbl_attendance_calendar= Database::get_course_table(TABLE_ATTENDANCE_CALENDAR);
$attendance_id = intval($attendance_id);
$attendance_calendar = $this->get_attendance_calendar($attendance_id);
$calendar_ids = array();
// get all dates from calendar by current attendance
foreach ($attendance_calendar as $cal) {
$calendar_ids[] = $cal['id'];
}
$data = array();
if (empty($user_id)) {
// get all registered users inside current course
$users = $this->get_users_rel_course();
$user_ids = array_keys($users);
if (count($calendar_ids) > 0 && count($user_ids) > 0) {
foreach ($user_ids as $uid) {
$sql = "SELECT * FROM $tbl_attendance_sheet WHERE user_id = '$uid' AND attendance_calendar_id IN(".implode(',',$calendar_ids).") ";
$res = Database::query($sql);
if (Database::num_rows($res) > 0) {
while ($row = Database::fetch_array($res)) {
$data[$uid][$row['attendance_calendar_id']]['presence'] = $row['presence'];
}
}
}
}
} else {
// get attendance for current user
$user_id = intval($user_id);
if (count($calendar_ids) > 0) {
$sql = "SELECT cal.date_time, att.presence FROM $tbl_attendance_sheet att INNER JOIN $tbl_attendance_calendar cal ON cal.id = att.attendance_calendar_id WHERE att.user_id = '$user_id' AND att.attendance_calendar_id IN(".implode(',',$calendar_ids).") ";
$res = Database::query($sql);
if (Database::num_rows($res) > 0) {
while ($row = Database::fetch_array($res)) {
$row['date_time'] = api_get_local_time($row['date_time'], $dateTimeFormatLong, null, date_default_timezone_get());
//$row['date_time'] = api_format_date($dateTimeFormatLong, strtotime($row['date_time']));
$data[$user_id][] = $row;
}
}
}
}
return $data;
}
/**
* Get next attendance calendar without presences (done attendances)
* @param int attendance id
* @return int attendance calendar id
*/
public function get_next_attendance_calendar_id($attendance_id) {
$tbl_attendance_calendar = Database::get_course_table(TABLE_ATTENDANCE_CALENDAR);
$attendance_id = intval($attendance_id);
$sql = "SELECT id FROM $tbl_attendance_calendar WHERE attendance_id = '$attendance_id' AND done_attendance = 0 ORDER BY date_time limit 1";
$rs = Database::query($sql);
$next_calendar_id = 0;
if (Database::num_rows($rs) > 0) {
$row = Database::fetch_array($rs);
$next_calendar_id = $row['id'];
}
return $next_calendar_id;
}
/**
* Get user' score from current attendance
* @param int user id
* @param int attendance id
* @return int score
*/
public function get_user_score($user_id, $attendance_id) {
$tbl_attendance_result = Database::get_course_table(TABLE_ATTENDANCE_RESULT);
$user_id = intval($user_id);
$attendance_id = intval($attendance_id);
$sql = "SELECT score FROM $tbl_attendance_result WHERE user_id='$user_id' AND attendance_id='$attendance_id'";
$rs = Database::query($sql);
$score = 0;
if (Database::num_rows($rs) > 0) {
$row = Database::fetch_array($rs);
$score = $row['score'];
}
return $score;
}
/**
* Get attendance calendar data by id
* @param int attendance calendar id
* @return array attendance calendar data
*/
public function get_attendance_calendar_by_id($calendar_id) {
$tbl_attendance_calendar = Database::get_course_table(TABLE_ATTENDANCE_CALENDAR);
$calendar_id = intval($calendar_id);
$sql = "SELECT * FROM $tbl_attendance_calendar WHERE id = '$calendar_id' ";
$rs = Database::query($sql);
$data = array();
if (Database::num_rows($rs) > 0) {
while ($row = Database::fetch_array($rs)) {
$row['date_time'] = api_get_local_time($row['date_time'], null, null, date_default_timezone_get());
$data = $row;
}
}
return $data;
}
/**
* Get all attendance calendar data inside current attendance
* @param int attendance id
* @return array attendance calendar data
*/
public function get_attendance_calendar($attendance_id) {
global $dateFormatShort, $timeNoSecFormat;
$tbl_attendance_calendar = Database::get_course_table(TABLE_ATTENDANCE_CALENDAR);
$attendance_id = intval($attendance_id);
$sql = "SELECT * FROM $tbl_attendance_calendar WHERE attendance_id = '$attendance_id' ORDER BY date_time ";
$rs = Database::query($sql);
$data = array();
if (Database::num_rows($rs) > 0) {
while ($row = Database::fetch_array($rs)) {
$row['date_time'] = api_get_local_time($row['date_time'], null, null, date_default_timezone_get());
$row['date'] = api_format_date($dateFormatShort, strtotime($row['date_time']));
$row['time'] = api_format_date($timeNoSecFormat, strtotime($row['date_time']));
$data[] = $row;
}
}
return $data;
}
/**
* Add new datetime inside attendance calendar table
* @param int attendance id
* @return int affected rows
*/
public function attendant_calendar_add($attendance_id) {
$tbl_attendance_calendar = Database::get_course_table(TABLE_ATTENDANCE_CALENDAR);
$affected_rows = 0;
$attendance_id = intval($attendance_id);
// check if datetime already exists inside the table
$sql = "SELECT id FROM $tbl_attendance_calendar WHERE date_time='".Database::escape_string($this->date_time)."' AND attendance_id = '$attendance_id'";
$rs = Database::query($sql);
if (Database::num_rows($rs) == 0) {
$sql = "INSERT INTO $tbl_attendance_calendar SET date_time='".Database::escape_string($this->date_time)."', attendance_id = '$attendance_id'";
Database::query($sql);
$affected_rows = Database::affected_rows();
}
return $affected_rows;
}
/**
* edit a datetime inside attendance calendar table
* @param int attendance calendar id
* @param int attendance id
* @return int affected rows
*/
public function attendant_calendar_edit($calendar_id, $attendance_id) {
$tbl_attendance_calendar = Database::get_course_table(TABLE_ATTENDANCE_CALENDAR);
$affected_rows = 0;
$attendance_id = intval($attendance_id);
// check if datetime already exists inside the table
$sql = "SELECT id FROM $tbl_attendance_calendar WHERE date_time = '".Database::escape_string($this->date_time)."' AND attendance_id = '$attendance_id'";
$rs = Database::query($sql);
if (Database::num_rows($rs) == 0) {
$sql = "UPDATE $tbl_attendance_calendar SET date_time='".Database::escape_string($this->date_time)."' WHERE id = '".intval($calendar_id)."'";
Database::query($sql);
$affected_rows = Database::affected_rows();
}
return $affected_rows;
}
/**
* delete a datetime from attendance calendar table
* @param int attendance calendar id
* @param int attendance id
* @param bool true for removing all calendar inside current attendance, false for removing by calendar id
* @return int affected rows
*/
public function attendance_calendar_delete($calendar_id, $attendance_id , $all_delete = false) {
$tbl_attendance_calendar = Database::get_course_table(TABLE_ATTENDANCE_CALENDAR);
$tbl_attendance_sheet = Database::get_course_table(TABLE_ATTENDANCE_SHEET);
$session_id = api_get_session_id();
$attendance_id = intval($attendance_id);
// get all registered users inside current course
$users = $this->get_users_rel_course();
$user_ids = array_keys($users);
if ($all_delete) {
$attendance_calendar = $this->get_attendance_calendar($attendance_id);
$calendar_ids = array();
// get all dates from calendar by current attendance
if (!empty($attendance_calendar)) {
foreach ($attendance_calendar as $cal) {
// delete all data from attendance sheet
$sql = "DELETE FROM $tbl_attendance_sheet WHERE attendance_calendar_id = '".intval($cal['id'])."'";
Database::query($sql);
// delete data from attendance calendar
$sql = "DELETE FROM $tbl_attendance_calendar WHERE id = '".intval($cal['id'])."'";
Database::query($sql);
}
}
} else {
// delete just one row from attendance sheet by the calendar id
$sql = "DELETE FROM $tbl_attendance_sheet WHERE attendance_calendar_id = '".intval($calendar_id)."'";
Database::query($sql);
// delete data from attendance calendar
$sql = "DELETE FROM $tbl_attendance_calendar WHERE id = '".intval($calendar_id)."'";
Database::query($sql);
}
$affected_rows = Database::affected_rows();
// update users' results
$this->update_users_results($user_ids, $attendance_id);
return $affected_rows;
}
/**
* buid a string datetime from array
* @param array array containing data e.g: $array('Y'=>'2010', 'F' => '02', 'd' => '10', 'H' => '12', 'i' => '30')
* @return string date and time e.g: '2010-02-10 12:30:00'
*/
public function build_datetime_from_array($array) {
$year = '0000';
$month = $day = $hours = $minutes = $seconds = '00';
if (isset($array['Y']) && isset($array['F']) && isset($array['d']) && isset($array['H']) && isset($array['i'])) {
$year = $array['Y'];
$month = $array['F'];
if (intval($month) < 10 ) $month = '0'.$month;
$day = $array['d'];
if (intval($day) < 10 ) $day = '0'.$day;
$hours = $array['H'];
if (intval($hours) < 10 ) $hours = '0'.$hours;
$minutes = $array['i'];
if (intval($minutes) < 10 ) $minutes = '0'.$minutes;
}
if (checkdate($month,$day,$year)) {
$datetime = $year.'-'.$month.'-'.$day.' '.$hours.':'.$minutes.':'.$seconds;
}
return $datetime;
}
/** Setters for fields of attendances tables **/
public function set_session_id($session_id) {
$this->session_id = $session_id;
}
public function set_course_id($course_id) {
$this->course_id = $course_id;
}
public function set_date_time($datetime) {
$this->date_time = $datetime;
}
public function set_name($name) {
$this->name = $name;
}
public function set_description($description) {
$this->description = $description;
}
public function set_attendance_qualify_title($attendance_qualify_title) {
$this->attendance_qualify_title = $attendance_qualify_title;
}
public function set_attendance_weight($attendance_weight) {
$this->attendance_weight = $attendance_weight;
}
/** Getters for fields of attendances tables **/
public function get_session_id() {
return $this->session_id;
}
public function get_course_id() {
return $this->course_id;
}
public function get_date_time() {
return $this->date_time;
}
public function get_name($name) {
return $this->name;
}
public function get_description($description) {
return $this->description;
}
public function get_attendance_qualify_title($attendance_qualify_title) {
return $this->attendance_qualify_title;
}
public function get_attendance_weight($attendance_weight) {
return $this->attendance_weight;
}
}
?>