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locallib.php
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locallib.php
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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* local functions and constants for module attendance
*
* @package mod_attendance
* @copyright 2011 Artem Andreev <[email protected]>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
require_once($CFG->libdir . '/gradelib.php');
require_once(dirname(__FILE__).'/renderhelpers.php');
define('ATT_VIEW_DAYS', 1);
define('ATT_VIEW_WEEKS', 2);
define('ATT_VIEW_MONTHS', 3);
define('ATT_VIEW_ALLPAST', 4);
define('ATT_VIEW_ALL', 5);
define('ATT_VIEW_NOTPRESENT', 6);
define('ATT_VIEW_SUMMARY', 7);
define('ATT_SORT_DEFAULT', 0);
define('ATT_SORT_LASTNAME', 1);
define('ATT_SORT_FIRSTNAME', 2);
define('ATTENDANCE_AUTOMARK_DISABLED', 0);
define('ATTENDANCE_AUTOMARK_ALL', 1);
define('ATTENDANCE_AUTOMARK_CLOSE', 2);
define('ATTENDANCE_AUTOMARK_ACTIVITYCOMPLETION', 3);
define('ATTENDANCE_SHAREDIP_DISABLED', 0);
define('ATTENDANCE_SHAREDIP_MINUTES', 1);
define('ATTENDANCE_SHAREDIP_FORCE', 2);
// Max number of sessions available in the warnings set form to trigger warnings.
define('ATTENDANCE_MAXWARNAFTER', 100);
/**
* Get statuses,
*
* @param int $attid
* @param bool $onlyvisible
* @param int $statusset
* @return array
*/
function attendance_get_statuses($attid, $onlyvisible=true, $statusset = -1) {
global $DB;
// Set selector.
$params = array('aid' => $attid);
$setsql = '';
if ($statusset >= 0) {
$params['statusset'] = $statusset;
$setsql = ' AND setnumber = :statusset ';
}
if ($onlyvisible) {
$statuses = $DB->get_records_select('attendance_statuses', "attendanceid = :aid AND visible = 1 AND deleted = 0 $setsql",
$params, 'setnumber ASC, grade DESC');
} else {
$statuses = $DB->get_records_select('attendance_statuses', "attendanceid = :aid AND deleted = 0 $setsql",
$params, 'setnumber ASC, grade DESC');
}
return $statuses;
}
/**
* Get the name of the status set.
*
* @param int $attid
* @param int $statusset
* @param bool $includevalues
* @return string
*/
function attendance_get_setname($attid, $statusset, $includevalues = true) {
$statusname = get_string('statusset', 'mod_attendance', $statusset + 1);
if ($includevalues) {
$statuses = attendance_get_statuses($attid, true, $statusset);
$statusesout = array();
foreach ($statuses as $status) {
$statusesout[] = $status->acronym;
}
if ($statusesout) {
if (count($statusesout) > 6) {
$statusesout = array_slice($statusesout, 0, 6);
$statusesout[] = '...';
}
$statusesout = implode(' ', $statusesout);
$statusname .= ' ('.$statusesout.')';
}
}
return $statusname;
}
/**
* Get full filtered log.
* @param int $userid
* @param stdClass $pageparams
* @return array
*/
function attendance_get_user_sessions_log_full($userid, $pageparams) {
global $DB;
// All taken sessions (including previous groups).
$usercourses = enrol_get_users_courses($userid);
list($usql, $uparams) = $DB->get_in_or_equal(array_keys($usercourses), SQL_PARAMS_NAMED, 'cid0');
$coursesql = "(1 = 1)";
$courseparams = array();
$now = time();
if ($pageparams->sesscourses === 'current') {
$coursesql = "(c.startdate = 0 OR c.startdate <= :now1) AND (c.enddate = 0 OR c.enddate >= :now2)";
$courseparams = array(
'now1' => $now,
'now2' => $now,
);
}
$datesql = "(1 = 1)";
$dateparams = array();
if ($pageparams->startdate && $pageparams->enddate) {
$datesql = "ats.sessdate >= :sdate AND ats.sessdate < :edate";
$dateparams = array(
'sdate' => $pageparams->startdate,
'edate' => $pageparams->enddate,
);
}
if ($pageparams->groupby === 'date') {
$ordersql = "ats.sessdate ASC, c.fullname ASC, att.name ASC, att.id ASC";
} else {
$ordersql = "c.fullname ASC, att.name ASC, att.id ASC, ats.sessdate ASC";
}
// WHERE clause is important:
// gm.userid not null => get unmarked attendances for user's current groups
// ats.groupid 0 => get all sessions that are for all students enrolled in course
// al.id not null => get all marked sessions whether or not user currently still in group.
$sql = "SELECT ats.id, ats.groupid, ats.sessdate, ats.duration, ats.description, ats.statusset,
al.statusid, al.remarks, ats.studentscanmark, ats.autoassignstatus,
ats.preventsharedip, ats.preventsharediptime,
ats.attendanceid, att.name AS attname, att.course AS courseid, c.fullname AS cname
FROM {attendance_sessions} ats
JOIN {attendance} att
ON att.id = ats.attendanceid
JOIN {course} c
ON att.course = c.id
LEFT JOIN {attendance_log} al
ON ats.id = al.sessionid AND al.studentid = :uid
LEFT JOIN {groups_members} gm
ON (ats.groupid = gm.groupid AND gm.userid = :uid1)
WHERE (gm.userid IS NOT NULL OR ats.groupid = 0 OR al.id IS NOT NULL)
AND att.course $usql
AND $datesql
AND $coursesql
ORDER BY $ordersql";
$params = array(
'uid' => $userid,
'uid1' => $userid,
);
$params = array_merge($params, $uparams);
$params = array_merge($params, $dateparams);
$params = array_merge($params, $courseparams);
$sessions = $DB->get_records_sql($sql, $params);
foreach ($sessions as $sess) {
if (empty($sess->description)) {
$sess->description = get_string('nodescription', 'attendance');
} else {
$modinfo = get_fast_modinfo($sess->courseid);
$cmid = $modinfo->instances['attendance'][$sess->attendanceid]->get_course_module_record()->id;
$ctx = context_module::instance($cmid);
$sess->description = file_rewrite_pluginfile_urls($sess->description,
'pluginfile.php', $ctx->id, 'mod_attendance', 'session', $sess->id);
}
}
return $sessions;
}
/**
* Get users courses and the relevant attendances.
*
* @param int $userid
* @return array
*/
function attendance_get_user_courses_attendances($userid) {
global $DB;
$usercourses = enrol_get_users_courses($userid);
list($usql, $uparams) = $DB->get_in_or_equal(array_keys($usercourses), SQL_PARAMS_NAMED, 'cid0');
$sql = "SELECT att.id as attid, att.course as courseid, course.fullname as coursefullname,
course.startdate as coursestartdate, att.name as attname, att.grade as attgrade
FROM {attendance} att
JOIN {course} course
ON att.course = course.id
WHERE att.course $usql
ORDER BY coursefullname ASC, attname ASC";
$params = array_merge($uparams, array('uid' => $userid));
return $DB->get_records_sql($sql, $params);
}
/**
* Used to calculate a fraction based on the part and total values
*
* @param float $part - part of the total value
* @param float $total - total value.
* @return float the calculated fraction.
*/
function attendance_calc_fraction($part, $total) {
if ($total == 0) {
return 0;
} else {
return $part / $total;
}
}
/**
* Check to see if statusid in use to help prevent deletion etc.
*
* @param integer $statusid
*/
function attendance_has_logs_for_status($statusid) {
global $DB;
return $DB->record_exists('attendance_log', array('statusid' => $statusid));
}
/**
* Helper function to add sessiondate_selector to add/update forms.
*
* @param MoodleQuickForm $mform
*/
function attendance_form_sessiondate_selector (MoodleQuickForm $mform) {
$mform->addElement('date_selector', 'sessiondate', get_string('sessiondate', 'attendance'));
for ($i = 0; $i <= 23; $i++) {
$hours[$i] = sprintf("%02d", $i);
}
for ($i = 0; $i < 60; $i += 5) {
$minutes[$i] = sprintf("%02d", $i);
}
$sesendtime = array();
if (!right_to_left()) {
$sesendtime[] =& $mform->createElement('static', 'from', '', get_string('from', 'attendance'));
$sesendtime[] =& $mform->createElement('select', 'starthour', get_string('hour', 'form'), $hours, false, true);
$sesendtime[] =& $mform->createElement('select', 'startminute', get_string('minute', 'form'), $minutes, false, true);
$sesendtime[] =& $mform->createElement('static', 'to', '', get_string('to', 'attendance'));
$sesendtime[] =& $mform->createElement('select', 'endhour', get_string('hour', 'form'), $hours, false, true);
$sesendtime[] =& $mform->createElement('select', 'endminute', get_string('minute', 'form'), $minutes, false, true);
} else {
$sesendtime[] =& $mform->createElement('static', 'from', '', get_string('from', 'attendance'));
$sesendtime[] =& $mform->createElement('select', 'startminute', get_string('minute', 'form'), $minutes, false, true);
$sesendtime[] =& $mform->createElement('select', 'starthour', get_string('hour', 'form'), $hours, false, true);
$sesendtime[] =& $mform->createElement('static', 'to', '', get_string('to', 'attendance'));
$sesendtime[] =& $mform->createElement('select', 'endminute', get_string('minute', 'form'), $minutes, false, true);
$sesendtime[] =& $mform->createElement('select', 'endhour', get_string('hour', 'form'), $hours, false, true);
}
$mform->addGroup($sesendtime, 'sestime', get_string('time', 'attendance'), array(' '), true);
}
/**
* Count the number of status sets that exist for this instance.
*
* @param int $attendanceid
* @return int
*/
function attendance_get_max_statusset($attendanceid) {
global $DB;
$max = $DB->get_field_sql('SELECT MAX(setnumber) FROM {attendance_statuses} WHERE attendanceid = ? AND deleted = 0',
array($attendanceid));
if ($max) {
return $max;
}
return 0;
}
/**
* Returns the maxpoints for each statusset
*
* @param array $statuses
* @return array
*/
function attendance_get_statusset_maxpoints($statuses) {
$statussetmaxpoints = array();
foreach ($statuses as $st) {
if (!isset($statussetmaxpoints[$st->setnumber])) {
$statussetmaxpoints[$st->setnumber] = $st->grade;
}
}
return $statussetmaxpoints;
}
/**
* Update user grades
*
* @param mod_attendance_structure|stdClass $attendance
* @param array $userids
*/
function attendance_update_users_grade($attendance, $userids=array()) {
global $DB;
if (empty($attendance->grade)) {
return false;
}
list($course, $cm) = get_course_and_cm_from_instance($attendance->id, 'attendance');
$summary = new mod_attendance_summary($attendance->id, $userids);
if (empty($userids)) {
$context = context_module::instance($cm->id);
$userids = array_keys(get_enrolled_users($context, 'mod/attendance:canbelisted', 0, 'u.id'));
}
if ($attendance->grade < 0) {
$dbparams = array('id' => -($attendance->grade));
$scale = $DB->get_record('scale', $dbparams);
$scalearray = explode(',', $scale->scale);
$attendancegrade = count($scalearray);
} else {
$attendancegrade = $attendance->grade;
}
$grades = array();
foreach ($userids as $userid) {
$grades[$userid] = new stdClass();
$grades[$userid]->userid = $userid;
if ($summary->has_taken_sessions($userid)) {
$usersummary = $summary->get_taken_sessions_summary_for($userid);
$grades[$userid]->rawgrade = $usersummary->takensessionspercentage * $attendancegrade;
} else {
$grades[$userid]->rawgrade = null;
}
}
return grade_update('mod/attendance', $course->id, 'mod', 'attendance', $attendance->id, 0, $grades);
}
/**
* Update grades for specified users for specified attendance
*
* @param integer $attendanceid - the id of the attendance to update
* @param integer $grade - the value of the 'grade' property of the specified attendance
* @param array $userids - the userids of the users to be updated
*/
function attendance_update_users_grades_by_id($attendanceid, $grade, $userids) {
global $DB;
if (empty($grade)) {
return false;
}
list($course, $cm) = get_course_and_cm_from_instance($attendanceid, 'attendance');
$summary = new mod_attendance_summary($attendanceid, $userids);
if (empty($userids)) {
$context = context_module::instance($cm->id);
$userids = array_keys(get_enrolled_users($context, 'mod/attendance:canbelisted', 0, 'u.id'));
}
if ($grade < 0) {
$dbparams = array('id' => -($grade));
$scale = $DB->get_record('scale', $dbparams);
$scalearray = explode(',', $scale->scale);
$attendancegrade = count($scalearray);
} else {
$attendancegrade = $grade;
}
$grades = array();
foreach ($userids as $userid) {
$grades[$userid] = new stdClass();
$grades[$userid]->userid = $userid;
if ($summary->has_taken_sessions($userid)) {
$usersummary = $summary->get_taken_sessions_summary_for($userid);
$grades[$userid]->rawgrade = $usersummary->takensessionspercentage * $attendancegrade;
} else {
$grades[$userid]->rawgrade = null;
}
}
return grade_update('mod/attendance', $course->id, 'mod', 'attendance', $attendanceid, 0, $grades);
}
/**
* Add an attendance status variable
*
* @param stdClass $status
* @return bool
*/
function attendance_add_status($status) {
global $DB;
if (empty($status->context)) {
$status->context = context_system::instance();
}
if (!empty($status->acronym) && !empty($status->description)) {
$status->deleted = 0;
$status->visible = 1;
$status->setunmarked = 0;
$id = $DB->insert_record('attendance_statuses', $status);
$status->id = $id;
$event = \mod_attendance\event\status_added::create(array(
'objectid' => $status->attendanceid,
'context' => $status->context,
'other' => array('acronym' => $status->acronym,
'description' => $status->description,
'grade' => $status->grade)));
if (!empty($status->cm)) {
$event->add_record_snapshot('course_modules', $status->cm);
}
$event->add_record_snapshot('attendance_statuses', $status);
$event->trigger();
return true;
} else {
return false;
}
}
/**
* Remove a status variable from an attendance instance
*
* @param stdClass $status
* @param stdClass $context
* @param stdClass $cm
*/
function attendance_remove_status($status, $context = null, $cm = null) {
global $DB;
if (empty($context)) {
$context = context_system::instance();
}
$DB->set_field('attendance_statuses', 'deleted', 1, array('id' => $status->id));
$event = \mod_attendance\event\status_removed::create(array(
'objectid' => $status->id,
'context' => $context,
'other' => array(
'acronym' => $status->acronym,
'description' => $status->description
)));
if (!empty($cm)) {
$event->add_record_snapshot('course_modules', $cm);
}
$event->add_record_snapshot('attendance_statuses', $status);
$event->trigger();
}
/**
* Update status variable for a particular Attendance module instance
*
* @param stdClass $status
* @param string $acronym
* @param string $description
* @param int $grade
* @param bool $visible
* @param stdClass $context
* @param stdClass $cm
* @param int $studentavailability
* @param bool $setunmarked
* @return array
*/
function attendance_update_status($status, $acronym, $description, $grade, $visible,
$context = null, $cm = null, $studentavailability = null, $setunmarked = false) {
global $DB;
if (empty($context)) {
$context = context_system::instance();
}
if (isset($visible)) {
$status->visible = $visible;
$updated[] = $visible ? get_string('show') : get_string('hide');
} else if (empty($acronym) || empty($description)) {
return array('acronym' => $acronym, 'description' => $description);
}
$updated = array();
if ($acronym) {
$status->acronym = $acronym;
$updated[] = $acronym;
}
if ($description) {
$status->description = $description;
$updated[] = $description;
}
if (isset($grade)) {
$status->grade = $grade;
$updated[] = $grade;
}
if (isset($studentavailability)) {
if (empty($studentavailability)) {
if ($studentavailability !== '0') {
$studentavailability = null;
}
}
$status->studentavailability = $studentavailability;
$updated[] = $studentavailability;
}
if ($setunmarked) {
$status->setunmarked = 1;
} else {
$status->setunmarked = 0;
}
$DB->update_record('attendance_statuses', $status);
$event = \mod_attendance\event\status_updated::create(array(
'objectid' => $status->attendanceid,
'context' => $context,
'other' => array('acronym' => $acronym, 'description' => $description, 'grade' => $grade,
'updated' => implode(' ', $updated))));
if (!empty($cm)) {
$event->add_record_snapshot('course_modules', $cm);
}
$event->add_record_snapshot('attendance_statuses', $status);
$event->trigger();
}
/**
* Similar to core random_string function but only lowercase letters.
* designed to make it relatively easy to provide a simple password in class.
*
* @param int $length The length of the string to be created.
* @return string
*/
function attendance_random_string($length=6) {
$randombytes = random_bytes_emulate($length);
$pool = 'abcdefghijklmnopqrstuvwxyz';
$pool .= '0123456789';
$poollen = strlen($pool);
$string = '';
for ($i = 0; $i < $length; $i++) {
$rand = ord($randombytes[$i]);
$string .= substr($pool, ($rand % ($poollen)), 1);
}
return $string;
}
/**
* Check to see if this session is open for student marking.
*
* @param stdclass $sess the session record from attendance_sessions.
* @param boolean $log - if student cannot mark, generate log event.
* @return array (boolean, string reason for failure)
*/
function attendance_can_student_mark($sess, $log = true) {
global $DB, $USER, $OUTPUT;
$canmark = false;
$reason = 'closed';
$attconfig = get_config('attendance');
if (!empty($attconfig->studentscanmark) && !empty($sess->studentscanmark)) {
if (empty($attconfig->studentscanmarksessiontime)) {
$canmark = true;
$reason = '';
} else {
$duration = $sess->duration;
if (empty($duration)) {
$duration = $attconfig->studentscanmarksessiontimeend * 60;
}
if ($sess->sessdate < time() && time() < ($sess->sessdate + $duration)) {
$canmark = true;
$reason = '';
}
}
}
// Check if another student has marked attendance from this IP address recently.
if ($canmark && !empty($sess->preventsharedip)) {
if ($sess->preventsharedip == ATTENDANCE_SHAREDIP_MINUTES) {
$time = time() - ($sess->preventsharediptime * 60);
$sql = 'sessionid = ? AND studentid <> ? AND timetaken > ? AND ipaddress = ?';
$params = array($sess->id, $USER->id, $time, getremoteaddr());
$record = $DB->get_record_select('attendance_log', $sql, $params);
} else {
// Assume ATTENDANCE_SHAREDIP_FORCED.
$sql = 'sessionid = ? AND studentid <> ? AND ipaddress = ?';
$params = array($sess->id, $USER->id, getremoteaddr());
$record = $DB->get_record_select('attendance_log', $sql, $params);
}
if (!empty($record)) {
$canmark = false;
$reason = 'preventsharederror';
if ($log) {
// Trigger an ip_shared event.
$attendanceid = $DB->get_field('attendance_sessions', 'attendanceid', array('id' => $record->sessionid));
$cm = get_coursemodule_from_instance('attendance', $attendanceid);
$event = \mod_attendance\event\session_ip_shared::create(array(
'objectid' => 0,
'context' => \context_module::instance($cm->id),
'other' => array(
'sessionid' => $record->sessionid,
'otheruser' => $record->studentid
)
));
$event->trigger();
}
}
}
return array($canmark, $reason);
}
/**
* Generate worksheet for Attendance export
*
* @param stdclass $data The data for the report
* @param string $filename The name of the file
* @param string $format excel|ods
*
*/
function attendance_exporttotableed($data, $filename, $format) {
global $CFG;
if ($format === 'excel') {
require_once("$CFG->libdir/excellib.class.php");
$filename .= ".xls";
$workbook = new MoodleExcelWorkbook("-");
} else {
require_once("$CFG->libdir/odslib.class.php");
$filename .= ".ods";
$workbook = new MoodleODSWorkbook("-");
}
// Sending HTTP headers.
$workbook->send($filename);
// Creating the first worksheet.
$myxls = $workbook->add_worksheet(get_string('modulenameplural', 'attendance'));
// Format types.
$formatbc = $workbook->add_format();
$formatbc->set_bold(1);
$myxls->write(0, 0, get_string('course'), $formatbc);
$myxls->write(0, 1, $data->course);
$myxls->write(1, 0, get_string('group'), $formatbc);
$myxls->write(1, 1, $data->group);
$i = 3;
$j = 0;
foreach ($data->tabhead as $cell) {
// Merge cells if the heading would be empty (remarks column).
if (empty($cell)) {
$myxls->merge_cells($i, $j - 1, $i, $j);
} else {
$myxls->write($i, $j, $cell, $formatbc);
}
$j++;
}
$i++;
$j = 0;
foreach ($data->table as $row) {
foreach ($row as $cell) {
$myxls->write($i, $j++, $cell);
}
$i++;
$j = 0;
}
$workbook->close();
}
/**
* Generate csv for Attendance export
*
* @param stdclass $data The data for the report
* @param string $filename The name of the file
*
*/
function attendance_exporttocsv($data, $filename) {
$filename .= ".txt";
header("Content-Type: application/download\n");
header("Content-Disposition: attachment; filename=\"$filename\"");
header("Expires: 0");
header("Cache-Control: must-revalidate,post-check=0,pre-check=0");
header("Pragma: public");
echo get_string('course')."\t".$data->course."\n";
echo get_string('group')."\t".$data->group."\n\n";
echo implode("\t", $data->tabhead)."\n";
foreach ($data->table as $row) {
echo implode("\t", $row)."\n";
}
}
/**
* Get session data for form.
* @param stdClass $formdata moodleform - attendance form.
* @param mod_attendance_structure $att - used to get attendance level subnet.
* @return array.
*/
function attendance_construct_sessions_data_for_add($formdata, mod_attendance_structure $att) {
global $CFG;
$sesstarttime = $formdata->sestime['starthour'] * HOURSECS + $formdata->sestime['startminute'] * MINSECS;
$sesendtime = $formdata->sestime['endhour'] * HOURSECS + $formdata->sestime['endminute'] * MINSECS;
$sessiondate = $formdata->sessiondate + $sesstarttime;
$duration = $sesendtime - $sesstarttime;
if (empty(get_config('attendance', 'enablewarnings'))) {
$absenteereport = get_config('attendance', 'absenteereport_default');
} else {
$absenteereport = empty($formdata->absenteereport) ? 0 : 1;
}
$now = time();
if (empty(get_config('attendance', 'studentscanmark'))) {
$formdata->studentscanmark = 0;
}
$calendarevent = 0;
if (isset($formdata->calendarevent)) { // Calendar event should be created.
$calendarevent = 1;
}
$sessions = array();
if (isset($formdata->addmultiply)) {
$startdate = $sessiondate;
$enddate = $formdata->sessionenddate + DAYSECS; // Because enddate in 0:0am.
if ($enddate < $startdate) {
return null;
}
// Getting first day of week.
$sdate = $startdate;
$dinfo = usergetdate($sdate);
if ($CFG->calendar_startwday === '0') { // Week start from sunday.
$startweek = $startdate - $dinfo['wday'] * DAYSECS; // Call new variable.
} else {
$wday = $dinfo['wday'] === 0 ? 7 : $dinfo['wday'];
$startweek = $startdate - ($wday - 1) * DAYSECS;
}
$wdaydesc = array(0 => 'Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat');
while ($sdate < $enddate) {
if ($sdate < $startweek + WEEKSECS) {
$dinfo = usergetdate($sdate);
if (isset($formdata->sdays) && array_key_exists($wdaydesc[$dinfo['wday']], $formdata->sdays)) {
$sess = new stdClass();
$sess->sessdate = make_timestamp($dinfo['year'], $dinfo['mon'], $dinfo['mday'],
$formdata->sestime['starthour'], $formdata->sestime['startminute']);
$sess->duration = $duration;
$sess->descriptionitemid = $formdata->sdescription['itemid'];
$sess->description = $formdata->sdescription['text'];
$sess->descriptionformat = $formdata->sdescription['format'];
$sess->calendarevent = $calendarevent;
$sess->timemodified = $now;
$sess->absenteereport = $absenteereport;
$sess->studentpassword = '';
$sess->includeqrcode = 0;
$sess->rotateqrcode = 0;
$sess->rotateqrcodesecret = '';
if (!empty($formdata->usedefaultsubnet)) {
$sess->subnet = $att->subnet;
} else {
$sess->subnet = $formdata->subnet;
}
$sess->automark = $formdata->automark;
$sess->automarkcompleted = 0;
if (!empty($formdata->automarkcmid)) {
$sess->automarkcmid = $formdata->automarkcmid;
} else {
$sess->automarkcmid = 0;
}
if (!empty($formdata->preventsharedip)) {
$sess->preventsharedip = $formdata->preventsharedip;
}
if (!empty($formdata->preventsharediptime)) {
$sess->preventsharediptime = $formdata->preventsharediptime;
}
if (isset($formdata->studentscanmark)) { // Students will be able to mark their own attendance.
$sess->studentscanmark = 1;
if (isset($formdata->autoassignstatus)) {
$sess->autoassignstatus = 1;
}
if (!empty($formdata->randompassword)) {
$sess->studentpassword = attendance_random_string();
} else if (!empty($formdata->studentpassword)) {
$sess->studentpassword = $formdata->studentpassword;
}
if (!empty($formdata->includeqrcode)) {
$sess->includeqrcode = $formdata->includeqrcode;
}
if (!empty($formdata->rotateqrcode)) {
$sess->rotateqrcode = $formdata->rotateqrcode;
$sess->studentpassword = attendance_random_string();
$sess->rotateqrcodesecret = attendance_random_string();
}
if (!empty($formdata->preventsharedip)) {
$sess->preventsharedip = $formdata->preventsharedip;
}
if (!empty($formdata->preventsharediptime)) {
$sess->preventsharediptime = $formdata->preventsharediptime;
}
} else {
$sess->subnet = '';
$sess->automark = 0;
$sess->automarkcompleted = 0;
$sess->preventsharedip = 0;
$sess->preventsharediptime = '';
}
$sess->statusset = $formdata->statusset;
attendance_fill_groupid($formdata, $sessions, $sess);
}
$sdate += DAYSECS;
} else {
$startweek += WEEKSECS * $formdata->period;
$sdate = $startweek;
}
}
} else {
$sess = new stdClass();
$sess->sessdate = make_timestamp(
date("Y", $formdata->sessiondate),
date("m", $formdata->sessiondate),
date("d", $formdata->sessiondate),
$formdata->sestime['starthour'],
$formdata->sestime['startminute']
);
$sess->duration = $duration;
$sess->descriptionitemid = $formdata->sdescription['itemid'];
$sess->description = $formdata->sdescription['text'];
$sess->descriptionformat = $formdata->sdescription['format'];
$sess->calendarevent = $calendarevent;
$sess->timemodified = $now;
$sess->studentscanmark = 0;
$sess->autoassignstatus = 0;
$sess->subnet = '';
$sess->studentpassword = '';
$sess->automark = 0;
$sess->automarkcompleted = 0;
if (!empty($formdata->automarkcmid)) {
$sess->automarkcmid = $formdata->automarkcmid;
} else {
$sess->automarkcmid = 0;
}
$sess->absenteereport = $absenteereport;
$sess->includeqrcode = 0;
$sess->rotateqrcode = 0;
$sess->rotateqrcodesecret = '';
if (!empty($formdata->usedefaultsubnet)) {
$sess->subnet = $att->subnet;
} else {
$sess->subnet = $formdata->subnet;
}
if (!empty($formdata->automark)) {
$sess->automark = $formdata->automark;
}
if (!empty($formdata->preventsharedip)) {
$sess->preventsharedip = $formdata->preventsharedip;
}
if (!empty($formdata->preventsharediptime)) {
$sess->preventsharediptime = $formdata->preventsharediptime;
}
if (isset($formdata->studentscanmark) && !empty($formdata->studentscanmark)) {
// Students will be able to mark their own attendance.
$sess->studentscanmark = 1;
if (isset($formdata->autoassignstatus) && !empty($formdata->autoassignstatus)) {
$sess->autoassignstatus = 1;
}
if (!empty($formdata->randompassword)) {
$sess->studentpassword = attendance_random_string();
} else if (!empty($formdata->studentpassword)) {
$sess->studentpassword = $formdata->studentpassword;
}
if (!empty($formdata->includeqrcode)) {
$sess->includeqrcode = $formdata->includeqrcode;
}
if (!empty($formdata->rotateqrcode)) {
$sess->rotateqrcode = $formdata->rotateqrcode;
$sess->studentpassword = attendance_random_string();
$sess->rotateqrcodesecret = attendance_random_string();
}
if (!empty($formdata->usedefaultsubnet)) {
$sess->subnet = $att->subnet;
} else {
$sess->subnet = $formdata->subnet;
}
if (!empty($formdata->automark)) {
$sess->automark = $formdata->automark;
}
if (!empty($formdata->preventsharedip)) {
$sess->preventsharedip = $formdata->preventsharedip;
}
if (!empty($formdata->preventsharediptime)) {
$sess->preventsharediptime = $formdata->preventsharediptime;
}
}
$sess->statusset = $formdata->statusset;
attendance_fill_groupid($formdata, $sessions, $sess);
}
return $sessions;
}
/**
* Helper function for attendance_construct_sessions_data_for_add().
*
* @param stdClass $formdata
* @param stdClass $sessions
* @param stdClass $sess
*/
function attendance_fill_groupid($formdata, &$sessions, $sess) {
if ($formdata->sessiontype == mod_attendance_structure::SESSION_COMMON) {
$sess = clone $sess;
$sess->groupid = 0;
$sessions[] = $sess;
} else {
foreach ($formdata->groups as $groupid) {
$sess = clone $sess;
$sess->groupid = $groupid;
$sessions[] = $sess;
}
}
}
/**
* Generates a summary of points for the courses selected.
*
* @param array $courseids optional list of courses to return
* @param string $orderby - optional order by param
* @return stdClass
*/
function attendance_course_users_points($courseids = array(), $orderby = '') {
global $DB;
$where = '';
$params = array();
$where .= ' AND ats.sessdate < :enddate ';
$params['enddate'] = time();
$joingroup = 'LEFT JOIN {groups_members} gm ON (gm.userid = atl.studentid AND gm.groupid = ats.groupid)';
$where .= ' AND (ats.groupid = 0 or gm.id is NOT NULL)';
if (!empty($courseids)) {
list($insql, $inparams) = $DB->get_in_or_equal($courseids, SQL_PARAMS_NAMED);
$where .= ' AND c.id ' . $insql;
$params = array_merge($params, $inparams);
}
$sql = "SELECT courseid, coursename, sum(points) / sum(maxpoints) as percentage FROM (
SELECT a.id, a.course as courseid, c.fullname as coursename, atl.studentid AS userid, COUNT(DISTINCT ats.id) AS numtakensessions,
SUM(stg.grade) AS points, SUM(stm.maxgrade) AS maxpoints
FROM {attendance_sessions} ats
JOIN {attendance} a ON a.id = ats.attendanceid
JOIN {course} c ON c.id = a.course
JOIN {attendance_log} atl ON (atl.sessionid = ats.id)
JOIN {attendance_statuses} stg ON (stg.id = atl.statusid AND stg.deleted = 0 AND stg.visible = 1)
JOIN (SELECT attendanceid, setnumber, MAX(grade) AS maxgrade
FROM {attendance_statuses}
WHERE deleted = 0
AND visible = 1
GROUP BY attendanceid, setnumber) stm
ON (stm.setnumber = ats.statusset AND stm.attendanceid = ats.attendanceid)
{$joingroup}
WHERE ats.sessdate >= c.startdate