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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 <andreev.artem@gmail.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
global $CFG;
require_once($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_SORT_LASTNAME', 1);
define('ATT_SORT_FIRSTNAME', 2);
class attendance_permissions {
private $canview;
private $canviewreports;
private $cantake;
private $canchange;
private $canmanage;
private $canchangepreferences;
private $canexport;
private $canbelisted;
private $canaccessallgroups;
private $cm;
private $context;
public function __construct($cm, $context) {
$this->cm = $cm;
$this->context = $context;
}
public function can_view() {
if (is_null($this->canview)) {
$this->canview = has_capability('mod/attendance:view', $this->context);
}
return $this->canview;
}
public function require_view_capability() {
require_capability('mod/attendance:view', $this->context);
}
public function can_view_reports() {
if (is_null($this->canviewreports)) {
$this->canviewreports = has_capability('mod/attendance:viewreports', $this->context);
}
return $this->canviewreports;
}
public function require_view_reports_capability() {
require_capability('mod/attendance:viewreports', $this->context);
}
public function can_take() {
if (is_null($this->cantake)) {
$this->cantake = has_capability('mod/attendance:takeattendances', $this->context);
}
return $this->cantake;
}
public function can_take_session($groupid) {
if (!$this->can_take()) {
return false;
}
if ($groupid == attendance::SESSION_COMMON
|| $this->can_access_all_groups()
|| array_key_exists($groupid, groups_get_activity_allowed_groups($this->cm))) {
return true;
}
return false;
}
public function can_change() {
if (is_null($this->canchange)) {
$this->canchange = has_capability('mod/attendance:changeattendances', $this->context);
}
return $this->canchange;
}
public function can_manage() {
if (is_null($this->canmanage)) {
$this->canmanage = has_capability('mod/attendance:manageattendances', $this->context);
}
return $this->canmanage;
}
public function require_manage_capability() {
require_capability('mod/attendance:manageattendances', $this->context);
}
public function can_change_preferences() {
if (is_null($this->canchangepreferences)) {
$this->canchangepreferences = has_capability('mod/attendance:changepreferences', $this->context);
}
return $this->canchangepreferences;
}
public function require_change_preferences_capability() {
require_capability('mod/attendance:changepreferences', $this->context);
}
public function can_export() {
if (is_null($this->canexport)) {
$this->canexport = has_capability('mod/attendance:export', $this->context);
}
return $this->canexport;
}
public function require_export_capability() {
require_capability('mod/attendance:export', $this->context);
}
public function can_be_listed() {
if (is_null($this->canbelisted)) {
$this->canbelisted = has_capability('mod/attendance:canbelisted', $this->context, null, false);
}
return $this->canbelisted;
}
public function can_access_all_groups() {
if (is_null($this->canaccessallgroups)) {
$this->canaccessallgroups = has_capability('moodle/site:accessallgroups', $this->context);
}
return $this->canaccessallgroups;
}
}
class att_page_with_filter_controls {
const SELECTOR_NONE = 1;
const SELECTOR_GROUP = 2;
const SELECTOR_SESS_TYPE = 3;
const SESSTYPE_COMMON = 0;
const SESSTYPE_ALL = -1;
const SESSTYPE_NO_VALUE = -2;
/** @var int current view mode */
public $view;
/** @var int $view and $curdate specify displaed date range */
public $curdate;
/** @var int start date of displayed date range */
public $startdate;
/** @var int end date of displayed date range */
public $enddate;
public $selectortype = self::SELECTOR_NONE;
protected $defaultview = ATT_VIEW_WEEKS;
private $cm;
private $sessgroupslist;
private $sesstype;
public function init($cm) {
$this->cm = $cm;
$this->init_view();
$this->init_curdate();
$this->init_start_end_date();
}
private function init_view() {
global $SESSION;
if (isset($this->view)) {
$SESSION->attcurrentattview[$this->cm->course] = $this->view;
} else if (isset($SESSION->attcurrentattview[$this->cm->course])) {
$this->view = $SESSION->attcurrentattview[$this->cm->course];
} else {
$this->view = $this->defaultview;
}
}
private function init_curdate() {
global $SESSION;
if (isset($this->curdate)) {
$SESSION->attcurrentattdate[$this->cm->course] = $this->curdate;
} else if (isset($SESSION->attcurrentattdate[$this->cm->course])) {
$this->curdate = $SESSION->attcurrentattdate[$this->cm->course];
} else {
$this->curdate = time();
}
}
public function init_start_end_date() {
global $CFG;
// HOURSECS solves issue for weeks view with Daylight saving time and clocks adjusting by one hour backward.
$date = usergetdate($this->curdate + HOURSECS);
$mday = $date['mday'];
$wday = $date['wday'] - $CFG->calendar_startwday;
if ($wday < 0) {
$wday += 7;
}
$mon = $date['mon'];
$year = $date['year'];
switch ($this->view) {
case ATT_VIEW_DAYS:
$this->startdate = make_timestamp($year, $mon, $mday);
$this->enddate = make_timestamp($year, $mon, $mday + 1);
break;
case ATT_VIEW_WEEKS:
$this->startdate = make_timestamp($year, $mon, $mday - $wday);
$this->enddate = make_timestamp($year, $mon, $mday + 7 - $wday) - 1;
break;
case ATT_VIEW_MONTHS:
$this->startdate = make_timestamp($year, $mon);
$this->enddate = make_timestamp($year, $mon + 1);
break;
case ATT_VIEW_ALLPAST:
$this->startdate = 1;
$this->enddate = time();
break;
case ATT_VIEW_ALL:
$this->startdate = 0;
$this->enddate = 0;
break;
}
}
private function calc_sessgroupslist_sesstype() {
global $SESSION;
if (!array_key_exists('attsessiontype', $SESSION)) {
$SESSION->attsessiontype = array($this->cm->course => self::SESSTYPE_ALL);
} else if (!array_key_exists($this->cm->course, $SESSION->attsessiontype)) {
$SESSION->attsessiontype[$this->cm->course] = self::SESSTYPE_ALL;
}
$group = optional_param('group', self::SESSTYPE_NO_VALUE, PARAM_INT);
if ($this->selectortype == self::SELECTOR_SESS_TYPE) {
if ($group > self::SESSTYPE_NO_VALUE) {
$SESSION->attsessiontype[$this->cm->course] = $group;
if ($group > self::SESSTYPE_ALL) {
// Set activegroup in $SESSION.
groups_get_activity_group($this->cm, true);
} else {
// Reset activegroup in $SESSION.
unset($SESSION->activegroup[$this->cm->course][VISIBLEGROUPS][$this->cm->groupingid]);
unset($SESSION->activegroup[$this->cm->course]['aag'][$this->cm->groupingid]);
unset($SESSION->activegroup[$this->cm->course][SEPARATEGROUPS][$this->cm->groupingid]);
}
$this->sesstype = $group;
} else {
$this->sesstype = $SESSION->attsessiontype[$this->cm->course];
}
} else if ($this->selectortype == self::SELECTOR_GROUP) {
if ($group == 0) {
$SESSION->attsessiontype[$this->cm->course] = self::SESSTYPE_ALL;
$this->sesstype = self::SESSTYPE_ALL;
} else if ($group > 0) {
$SESSION->attsessiontype[$this->cm->course] = $group;
$this->sesstype = $group;
} else {
$this->sesstype = $SESSION->attsessiontype[$this->cm->course];
}
}
if (is_null($this->sessgroupslist)) {
$this->calc_sessgroupslist();
}
// For example, we set SESSTYPE_ALL but user can access only to limited set of groups.
if (!array_key_exists($this->sesstype, $this->sessgroupslist)) {
reset($this->sessgroupslist);
$this->sesstype = key($this->sessgroupslist);
}
}
private function calc_sessgroupslist() {
global $USER, $PAGE;
$this->sessgroupslist = array();
$groupmode = groups_get_activity_groupmode($this->cm);
if ($groupmode == NOGROUPS) {
return;
}
if ($groupmode == VISIBLEGROUPS or has_capability('moodle/site:accessallgroups', $PAGE->context)) {
$allowedgroups = groups_get_all_groups($this->cm->course, 0, $this->cm->groupingid);
} else {
$allowedgroups = groups_get_all_groups($this->cm->course, $USER->id, $this->cm->groupingid);
}
if ($allowedgroups) {
if ($groupmode == VISIBLEGROUPS or has_capability('moodle/site:accessallgroups', $PAGE->context)) {
$this->sessgroupslist[self::SESSTYPE_ALL] = get_string('all', 'attendance');
}
// Show Common groups always
$this->sessgroupslist[self::SESSTYPE_COMMON] = get_string('commonsessions', 'attendance');
foreach ($allowedgroups as $group) {
$this->sessgroupslist[$group->id] = format_string($group->name);
}
}
}
public function get_sess_groups_list() {
if (is_null($this->sessgroupslist)) {
$this->calc_sessgroupslist_sesstype();
}
return $this->sessgroupslist;
}
public function get_current_sesstype() {
if (is_null($this->sesstype)) {
$this->calc_sessgroupslist_sesstype();
}
return $this->sesstype;
}
public function set_current_sesstype($sesstype) {
$this->sesstype = $sesstype;
}
}
class att_view_page_params extends att_page_with_filter_controls {
const MODE_THIS_COURSE = 0;
const MODE_ALL_COURSES = 1;
public $studentid;
public $mode;
public function __construct() {
$this->defaultview = ATT_VIEW_MONTHS;
}
public function get_significant_params() {
$params = array();
if (isset($this->studentid)) {
$params['studentid'] = $this->studentid;
}
if ($this->mode != self::MODE_THIS_COURSE) {
$params['mode'] = $this->mode;
}
return $params;
}
}
class att_manage_page_params extends att_page_with_filter_controls {
public function __construct() {
$this->selectortype = att_page_with_filter_controls::SELECTOR_SESS_TYPE;
}
public function get_significant_params() {
return array();
}
}
class att_sessions_page_params {
const ACTION_ADD = 1;
const ACTION_UPDATE = 2;
const ACTION_DELETE = 3;
const ACTION_DELETE_SELECTED = 4;
const ACTION_CHANGE_DURATION = 5;
/** @var int view mode of taking attendance page*/
public $action;
}
class att_take_page_params {
const SORTED_LIST = 1;
const SORTED_GRID = 2;
const DEFAULT_VIEW_MODE = self::SORTED_LIST;
public $sessionid;
public $grouptype;
public $group;
public $sort;
public $copyfrom;
/** @var int view mode of taking attendance page*/
public $viewmode;
public $gridcols;
public function init() {
if (!isset($this->group)) {
$this->group = 0;
}
if (!isset($this->sort)) {
$this->sort = ATT_SORT_LASTNAME;
}
$this->init_view_mode();
$this->init_gridcols();
}
private function init_view_mode() {
if (isset($this->viewmode)) {
set_user_preference("attendance_take_view_mode", $this->viewmode);
} else {
$this->viewmode = get_user_preferences("attendance_take_view_mode", self::DEFAULT_VIEW_MODE);
}
}
private function init_gridcols() {
if (isset($this->gridcols)) {
set_user_preference("attendance_gridcolumns", $this->gridcols);
} else {
$this->gridcols = get_user_preferences("attendance_gridcolumns", 5);
}
}
public function get_significant_params() {
$params = array();
$params['sessionid'] = $this->sessionid;
$params['grouptype'] = $this->grouptype;
if ($this->group) {
$params['group'] = $this->group;
}
if ($this->sort != ATT_SORT_LASTNAME) {
$params['sort'] = $this->sort;
}
if (isset($this->copyfrom)) {
$params['copyfrom'] = $this->copyfrom;
}
return $params;
}
}
class att_report_page_params extends att_page_with_filter_controls {
public $group;
public $sort;
public function __construct() {
$this->selectortype = self::SELECTOR_GROUP;
}
public function init($cm) {
parent::init($cm);
if (!isset($this->group)) {
$this->group = $this->get_current_sesstype() > 0 ? $this->get_current_sesstype() : 0;
}
if (!isset($this->sort)) {
$this->sort = ATT_SORT_LASTNAME;
}
}
public function get_significant_params() {
$params = array();
if ($this->sort != ATT_SORT_LASTNAME) {
$params['sort'] = $this->sort;
}
return $params;
}
}
class att_preferences_page_params {
const ACTION_ADD = 1;
const ACTION_DELETE = 2;
const ACTION_HIDE = 3;
const ACTION_SHOW = 4;
const ACTION_SAVE = 5;
/** @var int view mode of taking attendance page*/
public $action;
public $statusid;
public function get_significant_params() {
$params = array();
if (isset($this->action)) {
$params['action'] = $this->action;
}
if (isset($this->statusid)) {
$params['statusid'] = $this->statusid;
}
return $params;
}
}
class attendance {
const SESSION_COMMON = 0;
const SESSION_GROUP = 1;
/** @var stdclass course module record */
public $cm;
/** @var stdclass course record */
public $course;
/** @var stdclass context object */
public $context;
/** @var int attendance instance identifier */
public $id;
/** @var string attendance activity name */
public $name;
/** @var float number (10, 5) unsigned, the maximum grade for attendance */
public $grade;
/** current page parameters */
public $pageparams;
/** @var attendance_permissions permission of current user for attendance instance*/
public $perm;
private $groupmode;
private $statuses;
// Array by sessionid.
private $sessioninfo = array();
// Arrays by userid.
private $usertakensesscount = array();
private $userstatusesstat = array();
/**
* Initializes the attendance API instance using the data from DB
*
* Makes deep copy of all passed records properties. Replaces integer $course attribute
* with a full database record (course should not be stored in instances table anyway).
*
* @param stdClass $dbrecord Attandance instance data from {attendance} table
* @param stdClass $cm Course module record as returned by {@link get_coursemodule_from_id()}
* @param stdClass $course Course record from {course} table
* @param stdClass $context The context of the workshop instance
*/
public function __construct(stdclass $dbrecord, stdclass $cm, stdclass $course, stdclass $context=null, $pageparams=null) {
foreach ($dbrecord as $field => $value) {
if (property_exists('attendance', $field)) {
$this->{$field} = $value;
} else {
throw new coding_exception('The attendance table has a field with no property in the attendance class');
}
}
$this->cm = $cm;
$this->course = $course;
if (is_null($context)) {
$this->context = context_module::instance_by_id($this->cm->id);
} else {
$this->context = $context;
}
$this->pageparams = $pageparams;
$this->perm = new attendance_permissions($this->cm, $this->context);
}
public function get_group_mode() {
if (is_null($this->groupmode)) {
$this->groupmode = groups_get_activity_groupmode($this->cm, $this->course);
}
return $this->groupmode;
}
/**
* Returns current sessions for this attendance
*
* Fetches data from {attendance_sessions}
*
* @return array of records or an empty array
*/
public function get_current_sessions() {
global $DB;
$today = time(); // Because we compare with database, we don't need to use usertime().
$sql = "SELECT *
FROM {attendance_sessions}
WHERE :time BETWEEN sessdate AND (sessdate + duration)
AND attendanceid = :aid";
$params = array(
'time' => $today,
'aid' => $this->id);
return $DB->get_records_sql($sql, $params);
}
/**
* Returns today sessions for this attendance
*
* Fetches data from {attendance_sessions}
*
* @return array of records or an empty array
*/
public function get_today_sessions() {
global $DB;
$start = usergetmidnight(time());
$end = $start + DAYSECS;
$sql = "SELECT *
FROM {attendance_sessions}
WHERE sessdate >= :start AND sessdate < :end
AND attendanceid = :aid";
$params = array(
'start' => $start,
'end' => $end,
'aid' => $this->id);
return $DB->get_records_sql($sql, $params);
}
/**
* Returns today sessions suitable for copying attendance log
*
* Fetches data from {attendance_sessions}
*
* @return array of records or an empty array
*/
public function get_today_sessions_for_copy($sess) {
global $DB;
$start = usergetmidnight($sess->sessdate);
$sql = "SELECT *
FROM {attendance_sessions}
WHERE sessdate >= :start AND sessdate <= :end AND
(groupid = 0 OR groupid = :groupid) AND
lasttaken > 0 AND attendanceid = :aid";
$params = array(
'start' => $start,
'end' => $sess->sessdate,
'groupid' => $sess->groupid,
'aid' => $this->id);
return $DB->get_records_sql($sql, $params);
}
/**
* Returns count of hidden sessions for this attendance
*
* Fetches data from {attendance_sessions}
*
* @return count of hidden sessions
*/
public function get_hidden_sessions_count() {
global $DB;
$where = "attendanceid = :aid AND sessdate < :csdate";
$params = array(
'aid' => $this->id,
'csdate'=> $this->course->startdate);
return $DB->count_records_select('attendance_sessions', $where, $params);
}
public function get_filtered_sessions() {
global $DB;
if ($this->pageparams->startdate && $this->pageparams->enddate) {
$where = "attendanceid = :aid AND sessdate >= :csdate AND sessdate >= :sdate AND sessdate < :edate";
} else {
$where = "attendanceid = :aid AND sessdate >= :csdate";
}
if ($this->pageparams->get_current_sesstype() > att_page_with_filter_controls::SESSTYPE_ALL) {
$where .= " AND groupid=:cgroup";
}
$params = array(
'aid' => $this->id,
'csdate' => $this->course->startdate,
'sdate' => $this->pageparams->startdate,
'edate' => $this->pageparams->enddate,
'cgroup' => $this->pageparams->get_current_sesstype());
$sessions = $DB->get_records_select('attendance_sessions', $where, $params, 'sessdate asc');
foreach ($sessions as $sess) {
if (empty($sess->description)) {
$sess->description = get_string('nodescription', 'attendance');
} else {
$sess->description = file_rewrite_pluginfile_urls($sess->description,
'pluginfile.php', $this->context->id, 'mod_attendance', 'session', $sess->id);
}
}
return $sessions;
}
/**
* @return moodle_url of manage.php for attendance instance
*/
public function url_manage($params=array()) {
$params = array_merge(array('id' => $this->cm->id), $params);
return new moodle_url('/mod/attendance/manage.php', $params);
}
/**
* @return moodle_url of sessions.php for attendance instance
*/
public function url_sessions($params=array()) {
$params = array_merge(array('id' => $this->cm->id), $params);
return new moodle_url('/mod/attendance/sessions.php', $params);
}
/**
* @return moodle_url of report.php for attendance instance
*/
public function url_report($params=array()) {
$params = array_merge(array('id' => $this->cm->id), $params);
return new moodle_url('/mod/attendance/report.php', $params);
}
/**
* @return moodle_url of export.php for attendance instance
*/
public function url_export() {
$params = array('id' => $this->cm->id);
return new moodle_url('/mod/attendance/export.php', $params);
}
/**
* @return moodle_url of attsettings.php for attendance instance
*/
public function url_preferences($params=array()) {
$params = array_merge(array('id' => $this->cm->id), $params);
return new moodle_url('/mod/attendance/preferences.php', $params);
}
/**
* @return moodle_url of attendances.php for attendance instance
*/
public function url_take($params=array()) {
$params = array_merge(array('id' => $this->cm->id), $params);
return new moodle_url('/mod/attendance/take.php', $params);
}
public function url_view($params=array()) {
$params = array_merge(array('id' => $this->cm->id), $params);
return new moodle_url('/mod/attendance/view.php', $params);
}
public function add_sessions($sessions) {
global $DB;
foreach ($sessions as $sess) {
$sess->attendanceid = $this->id;
$sess->id = $DB->insert_record('attendance_sessions', $sess);
$description = file_save_draft_area_files($sess->descriptionitemid,
$this->context->id, 'mod_attendance', 'session', $sess->id,
array('subdirs' => false, 'maxfiles' => -1, 'maxbytes' => 0),
$sess->description);
$DB->set_field('attendance_sessions', 'description', $description, array('id' => $sess->id));
}
$info_array = array();
$maxlog = 7; // Only log first 10 sessions and last session in the log info. as we can only store 255 chars.
$i = 0;
foreach ($sessions as $sess) {
if ($i > $maxlog) {
$lastsession = end($sessions);
$info_array[] = '...';
$info_array[] = construct_session_full_date_time($lastsession->sessdate, $lastsession->duration);
break;
} else {
$info_array[] = construct_session_full_date_time($sess->sessdate, $sess->duration);
}
$i++;
}
add_to_log($this->course->id, 'attendance', 'sessions added', $this->url_manage(),
implode(',', $info_array), $this->cm->id);
}
public function update_session_from_form_data($formdata, $sessionid) {
global $DB;
if (!$sess = $DB->get_record('attendance_sessions', array('id' => $sessionid) )) {
print_error('No such session in this course');
}
$sess->sessdate = $formdata->sessiondate;
$sess->duration = $formdata->durtime['hours']*HOURSECS + $formdata->durtime['minutes']*MINSECS;
$description = file_save_draft_area_files($formdata->sdescription['itemid'],
$this->context->id, 'mod_attendance', 'session', $sessionid,
array('subdirs' => false, 'maxfiles' => -1, 'maxbytes' => 0), $formdata->sdescription['text']);
$sess->description = $description;
$sess->descriptionformat = $formdata->sdescription['format'];
$sess->timemodified = time();
$DB->update_record('attendance_sessions', $sess);
$url = $this->url_sessions(array('sessionid' => $sessionid, 'action' => att_sessions_page_params::ACTION_UPDATE));
$info = construct_session_full_date_time($sess->sessdate, $sess->duration);
add_to_log($this->course->id, 'attendance', 'session updated', $url, $info, $this->cm->id);
}
public function take_from_form_data($formdata) {
global $DB, $USER;
// TODO: WARNING - $formdata is unclean - comes from direct $_POST - ideally needs a rewrite but we do some cleaning below.
$statuses = implode(',', array_keys( (array)$this->get_statuses() ));
$now = time();
$sesslog = array();
$formdata = (array)$formdata;
foreach ($formdata as $key => $value) {
if (substr($key, 0, 4) == 'user') {
$sid = substr($key, 4);
if (!(is_numeric($sid) && is_numeric($value))) { // Sanity check on $sid and $value.
print_error('nonnumericid', 'attendance');
}
$sesslog[$sid] = new stdClass();
$sesslog[$sid]->studentid = $sid; // We check is_numeric on this above.
$sesslog[$sid]->statusid = $value; // We check is_numeric on this above.
$sesslog[$sid]->statusset = $statuses;
$sesslog[$sid]->remarks = array_key_exists('remarks'.$sid, $formdata) ?
clean_param($formdata['remarks'.$sid], PARAM_TEXT) : '';
$sesslog[$sid]->sessionid = $this->pageparams->sessionid;
$sesslog[$sid]->timetaken = $now;
$sesslog[$sid]->takenby = $USER->id;
}
}
$dbsesslog = $this->get_session_log($this->pageparams->sessionid);
foreach ($sesslog as $log) {
if ($log->statusid) {
if (array_key_exists($log->studentid, $dbsesslog)) {
$log->id = $dbsesslog[$log->studentid]->id;
$DB->update_record('attendance_log', $log);
} else {
$DB->insert_record('attendance_log', $log, false);
}
}
}
$rec = new stdClass();
$rec->id = $this->pageparams->sessionid;
$rec->lasttaken = $now;
$rec->lasttakenby = $USER->id;
$DB->update_record('attendance_sessions', $rec);
if ($this->grade != 0) {
$this->update_users_grade(array_keys($sesslog));
}
$params = array(
'sessionid' => $this->pageparams->sessionid,
'grouptype' => $this->pageparams->grouptype);
$url = $this->url_take($params);
add_to_log($this->course->id, 'attendance', 'taken', $url, '', $this->cm->id);
$group = 0;
if ($this->pageparams->grouptype != attendance::SESSION_COMMON) {
$group = $this->pageparams->grouptype;
} else {
if ($this->pageparams->group) {
$group = $this->pageparams->group;
}
}
$totalusers = count_enrolled_users(context_module::instance($this->cm->id), 'mod/attendance:canbelisted', $group);
$usersperpage = $this->pageparams->perpage;
if (!empty($this->pageparams->page) && $this->pageparams->page && $totalusers && $usersperpage) {
$numberofpages = ceil($totalusers / $usersperpage);
if ($this->pageparams->page < $numberofpages) {
$params['page'] = $this->pageparams->page + 1;
redirect($this->url_take($params), get_string('moreattendance', 'attendance'));
}
}
redirect($this->url_manage(), get_string('attendancesuccess', 'attendance'));
}
/**
* MDL-27591 made this method obsolete.
*/
public function get_users($groupid = 0, $page = 1) {
global $DB, $CFG;
// Fields we need from the user table.
$userfields = user_picture::fields('u', array('username'));
if (isset($this->pageparams->sort) and ($this->pageparams->sort == ATT_SORT_FIRSTNAME)) {
$orderby = "u.firstname ASC, u.lastname ASC";
} else {
$orderby = "u.lastname ASC, u.firstname ASC";
}
if ($page) {
$usersperpage = $this->pageparams->perpage;
if (!empty($CFG->enablegroupmembersonly) and $this->cm->groupmembersonly) {
$startusers = ($page - 1) * $usersperpage;
if ($groupid == 0) {
$groups = array_keys(groups_get_all_groups($this->cm->course, 0, $this->cm->groupingid, 'g.id'));
} else {
$groups = $groupid;
}
$users = get_users_by_capability($this->context, 'mod/attendance:canbelisted',
$userfields.',u.id, u.firstname, u.lastname, u.email',
$orderby, $startusers, $usersperpage, $groups,
'', false, true);
} else {
$startusers = ($page - 1) * $usersperpage;
$users = get_enrolled_users($this->context, 'mod/attendance:canbelisted', $groupid, $userfields, $orderby, $startusers, $usersperpage);
}
} else {
if (!empty($CFG->enablegroupmembersonly) and $this->cm->groupmembersonly) {
if ($groupid == 0) {
$groups = array_keys(groups_get_all_groups($this->cm->course, 0, $this->cm->groupingid, 'g.id'));
} else {
$groups = $groupid;
}
$users = get_users_by_capability($this->context, 'mod/attendance:canbelisted',
$userfields.',u.id, u.firstname, u.lastname, u.email',
$orderby, '', '', $groups,
'', false, true);
} else {
$users = get_enrolled_users($this->context, 'mod/attendance:canbelisted', $groupid, $userfields, $orderby);
}
}
// Add a flag to each user indicating whether their enrolment is active.
if (!empty($users)) {
list($sql, $params) = $DB->get_in_or_equal(array_keys($users), SQL_PARAMS_NAMED, 'usid0');
// CONTRIB-4868
$mintime = 'MIN(CASE WHEN (ue.timestart > :zerotime) THEN ue.timestart ELSE ue.timecreated END)';
$maxtime = 'MAX(ue.timeend)';
// CONTRIB-3549
$sql = "SELECT ue.userid, ue.status,
$mintime AS mintime,
$maxtime AS maxtime
FROM {user_enrolments} ue
JOIN {enrol} e ON e.id = ue.enrolid
WHERE ue.userid $sql
AND e.status = :estatus
AND e.courseid = :courseid
GROUP BY ue.userid, ue.status";
$params += array('zerotime'=>0, 'estatus'=>ENROL_INSTANCE_ENABLED, 'courseid'=>$this->course->id);
$enrolments = $DB->get_records_sql($sql, $params);
foreach ($users as $user) {
$users[$user->id]->enrolmentstatus = $enrolments[$user->id]->status;
$users[$user->id]->enrolmentstart = $enrolments[$user->id]->mintime;
$users[$user->id]->enrolmentend = $enrolments[$user->id]->maxtime;
}
}
return $users;
}
public function get_user($userid) {
global $DB;
$user = $DB->get_record('user', array('id' => $userid), '*', MUST_EXIST);
// CONTRIB-4868
$mintime = 'MIN(CASE WHEN (ue.timestart > :zerotime) THEN ue.timestart ELSE ue.timecreated END)';
$maxtime = 'MAX(ue.timeend)';
$sql = "SELECT ue.userid, ue.status,