sessions.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * Adding attendance sessions
  19  *
  20  * @package    mod_attendance
  21  * @copyright  2011 Artem Andreev <andreev.artem@gmail.com>
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 require_once(dirname(__FILE__).'/../../config.php');
  26 require_once(dirname(__FILE__).'/locallib.php');
  27 require_once(dirname(__FILE__).'/add_form.php');
  28 require_once(dirname(__FILE__).'/update_form.php');
  29 require_once(dirname(__FILE__).'/duration_form.php');
  30
  31 $pageparams = new att_sessions_page_params();
  32
  33 $id                     = required_param('id', PARAM_INT);
  34 $pageparams->action     = required_param('action', PARAM_INT);
  35
  36 $cm             = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
  37 $course         = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
  38 $att            = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
  39
  40 require_login($course, true, $cm);
  41
  42 $att = new attendance($att, $cm, $course, $PAGE->context, $pageparams);
  43
  44 $att->perm->require_manage_capability();
  45
  46 $PAGE->set_url($att->url_sessions());
  47 $PAGE->set_title($course->shortname. ": ".$att->name);
  48 $PAGE->set_heading($course->fullname);
  49 $PAGE->set_cacheable(true);
  50 $PAGE->set_button($OUTPUT->update_module_button($cm->id, 'attendance'));
  51 $PAGE->navbar->add($att->name);
  52
  53 $formparams = array('course' => $course, 'cm' => $cm, 'modcontext' => $PAGE->context);
  54 switch ($att->pageparams->action) {
  55     case att_sessions_page_params::ACTION_ADD:
  56         $url = $att->url_sessions(array('action' => att_sessions_page_params::ACTION_ADD));
  57         $mform = new mod_attendance_add_form($url, $formparams);
  58
  59         if ($formdata = $mform->get_data()) {
  60             $sessions = construct_sessions_data_for_add($formdata);
  61             $att->add_sessions($sessions);
  62             redirect($url, get_string('sessionsgenerated', 'attendance'));
  63         }
  64         break;
  65     case att_sessions_page_params::ACTION_UPDATE:
  66         $sessionid = required_param('sessionid', PARAM_INT);
  67
  68         $url = $att->url_sessions(array('action' => att_sessions_page_params::ACTION_UPDATE, 'sessionid' => $sessionid));
  69         $formparams['sessionid'] = $sessionid;
  70         $mform = new mod_attendance_update_form($url, $formparams);
  71
  72         if ($mform->is_cancelled()) {
  73             redirect($att->url_manage());
  74         }
  75
  76         if ($formdata = $mform->get_data()) {
  77             $att->update_session_from_form_data($formdata, $sessionid);
  78
  79             redirect($att->url_manage(), get_string('sessionupdated', 'attendance'));
  80         }
  81         break;
  82     case att_sessions_page_params::ACTION_DELETE:
  83         $sessionid = required_param('sessionid', PARAM_INT);
  84         $confirm   = optional_param('confirm', null, PARAM_INT);
  85
  86         if (isset($confirm) && confirm_sesskey()) {
  87             $att->delete_sessions(array($sessionid));
  88             if ($att->grade > 0) {
  89                 att_update_all_users_grades($att->id, $att->course, $att->context, $cm);
  90             }
  91             redirect($att->url_manage(), get_string('sessiondeleted', 'attendance'));
  92         }
  93
  94         $sessinfo = $att->get_session_info($sessionid);
  95
  96         $message = get_string('deletecheckfull', '', get_string('session', 'attendance'));
  97         $message .= str_repeat(html_writer::empty_tag('br'), 2);
  98         $message .= userdate($sessinfo->sessdate, get_string('strftimedmyhm', 'attendance'));
  99         $message .= html_writer::empty_tag('br');
 100         $message .= $sessinfo->description;
 101
 102         $params = array('action' => $att->pageparams->action, 'sessionid' => $sessionid, 'confirm' => 1, 'sesskey' => sesskey());
 103
 104         echo $OUTPUT->header();
 105         echo $OUTPUT->heading(get_string('attendanceforthecourse', 'attendance').' :: ' .$course->fullname);
 106         echo $OUTPUT->confirm($message, $att->url_sessions($params), $att->url_manage());
 107         echo $OUTPUT->footer();
 108         exit;
 109     case att_sessions_page_params::ACTION_DELETE_SELECTED:
 110         $confirm    = optional_param('confirm', null, PARAM_INT);
 111
 112         if (isset($confirm) && confirm_sesskey()) {
 113             $sessionsids = required_param('sessionsids', PARAM_ALPHANUMEXT);
 114             $sessionsids = explode('_', $sessionsids);
 115
 116             $att->delete_sessions($sessionsids);
 117             if ($att->grade > 0) {
 118                 att_update_all_users_grades($att->id, $att->course, $att->context, $cm);
 119             }
 120             redirect($att->url_manage(), get_string('sessiondeleted', 'attendance'));
 121         }
 122         $sessid = required_param('sessid', PARAM_SEQUENCE);
 123
 124         $sessionsinfo = $att->get_sessions_info($sessid);
 125
 126         $message = get_string('deletecheckfull', '', get_string('session', 'attendance'));
 127         $message .= html_writer::empty_tag('br');
 128         foreach ($sessionsinfo as $sessinfo) {
 129             $message .= html_writer::empty_tag('br');
 130             $message .= userdate($sessinfo->sessdate, get_string('strftimedmyhm', 'attendance'));
 131             $message .= html_writer::empty_tag('br');
 132             $message .= $sessinfo->description;
 133         }
 134
 135         $sessionsids = implode('_', $sessid);
 136         $params = array('action' => $att->pageparams->action, 'sessionsids' => $sessionsids,
 137                         'confirm' => 1, 'sesskey' => sesskey());
 138
 139         echo $OUTPUT->header();
 140         echo $OUTPUT->heading(get_string('attendanceforthecourse', 'attendance').' :: ' .$course->fullname);
 141         echo $OUTPUT->confirm($message, $att->url_sessions($params), $att->url_manage());
 142         echo $OUTPUT->footer();
 143         exit;
 144     case att_sessions_page_params::ACTION_CHANGE_DURATION:
 145         $sessid = optional_param('sessid', '', PARAM_SEQUENCE);
 146         $ids = optional_param('ids', '', PARAM_ALPHANUMEXT);
 147
 148         $slist = isset($sessid) ? implode('_', $sessid) : '';
 149
 150         $url = $att->url_sessions(array('action' => att_sessions_page_params::ACTION_CHANGE_DURATION));
 151         $formparams['ids'] = $slist;
 152         $mform = new mod_attendance_duration_form($url, $formparams);
 153
 154         if ($mform->is_cancelled()) {
 155             redirect($att->url_manage());
 156         }
 157
 158         if ($formdata = $mform->get_data()) {
 159             $sessionsids = explode('_', $ids);
 160             $duration = $formdata->durtime['hours']*HOURSECS + $formdata->durtime['minutes']*MINSECS;
 161             $att->update_sessions_duration($sessionsids, $duration);
 162             redirect($att->url_manage(), get_string('sessionupdated', 'attendance'));
 163         }
 164
 165         if ($slist === '') {
 166             print_error('nosessionsselected', 'attendance', $att->url_manage());
 167         }
 168
 169         break;
 170 }
 171
 172 $output = $PAGE->get_renderer('mod_attendance');
 173 $tabs = new attendance_tabs($att, attendance_tabs::TAB_ADD);
 174 echo $output->header();
 175 echo $output->heading(get_string('attendanceforthecourse', 'attendance').' :: ' .$course->fullname);
 176 echo $output->render($tabs);
 177
 178 $mform->display();
 179
 180 echo $OUTPUT->footer();
 181
 182 function construct_sessions_data_for_add($formdata) {
 183     global $CFG;
 184
 185     $duration = $formdata->durtime['hours']*HOURSECS + $formdata->durtime['minutes']*MINSECS;
 186     $now = time();
 187
 188     $sessions = array();
 189     if (isset($formdata->addmultiply)) {
 190         $startdate = $formdata->sessiondate;
 191         $starttime = $startdate - usergetmidnight($startdate);
 192         $enddate = $formdata->sessionenddate + DAYSECS; // Because enddate in 0:0am.
 193
 194         if ($enddate < $startdate) {
 195             return null;
 196         }
 197
 198         $days = (int)ceil(($enddate - $startdate) / DAYSECS);
 199
 200         // Getting first day of week.
 201         $sdate = $startdate;
 202         $dinfo = usergetdate($sdate);
 203         if ($CFG->calendar_startwday === '0') { // Week start from sunday.
 204             $startweek = $startdate - $dinfo['wday'] * DAYSECS; // Call new variable.
 205         } else {
 206             $wday = $dinfo['wday'] === 0 ? 7 : $dinfo['wday'];
 207             $startweek = $startdate - ($wday-1) * DAYSECS;
 208         }
 209
 210         $wdaydesc = array(0=>'Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat');
 211
 212         while ($sdate < $enddate) {
 213             if ($sdate < $startweek + WEEKSECS) {
 214                 $dinfo = usergetdate($sdate);
 215                 if (isset($formdata->sdays) && array_key_exists($wdaydesc[$dinfo['wday']], $formdata->sdays)) {
 216                     $sess = new stdClass();
 217                     $sess->sessdate =  usergetmidnight($sdate) + $starttime;
 218                     $sess->duration = $duration;
 219                     $sess->descriptionitemid = $formdata->sdescription['itemid'];
 220                     $sess->description = $formdata->sdescription['text'];
 221                     $sess->descriptionformat = $formdata->sdescription['format'];
 222                     $sess->timemodified = $now;
 223                     if (isset($formdata->studentscanmark)) { // Students will be able to mark their own attendance.
 224                         $sess->studentscanmark = 1;
 225                     }
 226
 227                     fill_groupid($formdata, $sessions, $sess);
 228                 }
 229                 $sdate += DAYSECS;
 230             } else {
 231                 $startweek += WEEKSECS * $formdata->period;
 232                 $sdate = $startweek;
 233             }
 234         }
 235     } else {
 236         $sess = new stdClass();
 237         $sess->sessdate = $formdata->sessiondate;
 238         $sess->duration = $duration;
 239         $sess->descriptionitemid = $formdata->sdescription['itemid'];
 240         $sess->description = $formdata->sdescription['text'];
 241         $sess->descriptionformat = $formdata->sdescription['format'];
 242         $sess->timemodified = $now;
 243         if (isset($formdata->studentscanmark)) { // Students will be able to mark their own attendance.
 244             $sess->studentscanmark = 1;
 245         }
 246
 247         fill_groupid($formdata, $sessions, $sess);
 248     }
 249
 250     return $sessions;
 251 }
 252
 253 function fill_groupid($formdata, &$sessions, $sess) {
 254     if ($formdata->sessiontype == attendance::SESSION_COMMON) {
 255         $sess = clone $sess;
 256         $sess->groupid = 0;
 257         $sessions[] = $sess;
 258     } else {
 259         foreach ($formdata->groups as $groupid) {
 260             $sess = clone $sess;
 261             $sess->groupid = $groupid;
 262             $sessions[] = $sess;
 263         }
 264     }
 265 }