2 // This file is part of Moodle - http://moodle.org/
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.
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.
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/>.
18 * Library of useful functions
20 * @copyright 1999 Martin Dougiamas http://dougiamas.com
21 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
22 * @package core_course
25 defined('MOODLE_INTERNAL') || die;
27 require_once($CFG->libdir.'/completionlib.php');
28 require_once($CFG->libdir.'/filelib.php');
29 require_once($CFG->dirroot.'/course/format/lib.php');
31 define('COURSE_MAX_LOGS_PER_PAGE', 1000); // Records.
32 define('COURSE_MAX_RECENT_PERIOD', 172800); // Two days, in seconds.
35 * Number of courses to display when summaries are included.
37 * @deprecated since 2.4, use $CFG->courseswithsummarieslimit instead.
39 define('COURSE_MAX_SUMMARIES_PER_PAGE', 10);
41 // Max courses in log dropdown before switching to optional.
42 define('COURSE_MAX_COURSES_PER_DROPDOWN', 1000);
43 // Max users in log dropdown before switching to optional.
44 define('COURSE_MAX_USERS_PER_DROPDOWN', 1000);
45 define('FRONTPAGENEWS', '0');
46 define('FRONTPAGECATEGORYNAMES', '2');
47 define('FRONTPAGECATEGORYCOMBO', '4');
48 define('FRONTPAGEENROLLEDCOURSELIST', '5');
49 define('FRONTPAGEALLCOURSELIST', '6');
50 define('FRONTPAGECOURSESEARCH', '7');
51 // Important! Replaced with $CFG->frontpagecourselimit - maximum number of courses displayed on the frontpage.
52 define('EXCELROWS', 65535);
53 define('FIRSTUSEDEXCELROW', 3);
55 define('MOD_CLASS_ACTIVITY', 0);
56 define('MOD_CLASS_RESOURCE', 1);
58 function make_log_url($module, $url) {
61 if (strpos($url, 'report/') === 0) {
62 // there is only one report type, course reports are deprecated
72 if (strpos($url, '../') === 0) {
73 $url = ltrim($url, '.');
75 $url = "/course/$url";
79 $url = "/calendar/$url";
83 $url = "/$module/$url";
96 $url = "/message/$url";
108 $url = "/grade/$url";
111 $url = "/mod/$module/$url";
115 //now let's sanitise urls - there might be some ugly nasties:-(
116 $parts = explode('?', $url);
117 $script = array_shift($parts);
118 if (strpos($script, 'http') === 0) {
119 $script = clean_param($script, PARAM_URL);
121 $script = clean_param($script, PARAM_PATH);
126 $query = implode('', $parts);
127 $query = str_replace('&', '&', $query); // both & and & are stored in db :-|
128 $parts = explode('&', $query);
129 $eq = urlencode('=');
130 foreach ($parts as $key=>$part) {
131 $part = urlencode(urldecode($part));
132 $part = str_replace($eq, '=', $part);
133 $parts[$key] = $part;
135 $query = '?'.implode('&', $parts);
138 return $script.$query;
142 function build_mnet_logs_array($hostid, $course, $user=0, $date=0, $order="l.time ASC", $limitfrom='', $limitnum='',
143 $modname="", $modid=0, $modaction="", $groupid=0) {
146 // It is assumed that $date is the GMT time of midnight for that day,
147 // and so the next 86400 seconds worth of logs are printed.
149 /// Setup for group handling.
151 // TODO: I don't understand group/context/etc. enough to be able to do
152 // something interesting with it here
153 // What is the context of a remote course?
155 /// If the group mode is separate, and this user does not have editing privileges,
156 /// then only the user's group can be viewed.
157 //if ($course->groupmode == SEPARATEGROUPS and !has_capability('moodle/course:managegroups', context_course::instance($course->id))) {
158 // $groupid = get_current_group($course->id);
160 /// If this course doesn't have groups, no groupid can be specified.
161 //else if (!$course->groupmode) {
170 $qry = "SELECT l.*, u.firstname, u.lastname, u.picture
172 LEFT JOIN {user} u ON l.userid = u.id
176 $where .= "l.hostid = :hostid";
177 $params['hostid'] = $hostid;
179 // TODO: Is 1 really a magic number referring to the sitename?
180 if ($course != SITEID || $modid != 0) {
181 $where .= " AND l.course=:courseid";
182 $params['courseid'] = $course;
186 $where .= " AND l.module = :modname";
187 $params['modname'] = $modname;
190 if ('site_errors' === $modid) {
191 $where .= " AND ( l.action='error' OR l.action='infected' )";
193 //TODO: This assumes that modids are the same across sites... probably
195 $where .= " AND l.cmid = :modid";
196 $params['modid'] = $modid;
200 $firstletter = substr($modaction, 0, 1);
201 if ($firstletter == '-') {
202 $where .= " AND ".$DB->sql_like('l.action', ':modaction', false, true, true);
203 $params['modaction'] = '%'.substr($modaction, 1).'%';
205 $where .= " AND ".$DB->sql_like('l.action', ':modaction', false);
206 $params['modaction'] = '%'.$modaction.'%';
211 $where .= " AND l.userid = :user";
212 $params['user'] = $user;
216 $enddate = $date + 86400;
217 $where .= " AND l.time > :date AND l.time < :enddate";
218 $params['date'] = $date;
219 $params['enddate'] = $enddate;
223 $result['totalcount'] = $DB->count_records_sql("SELECT COUNT('x') FROM {mnet_log} l WHERE $where", $params);
224 if(!empty($result['totalcount'])) {
225 $where .= " ORDER BY $order";
226 $result['logs'] = $DB->get_records_sql("$qry $where", $params, $limitfrom, $limitnum);
228 $result['logs'] = array();
233 function build_logs_array($course, $user=0, $date=0, $order="l.time ASC", $limitfrom='', $limitnum='',
234 $modname="", $modid=0, $modaction="", $groupid=0) {
235 global $DB, $SESSION, $USER;
236 // It is assumed that $date is the GMT time of midnight for that day,
237 // and so the next 86400 seconds worth of logs are printed.
239 /// Setup for group handling.
241 /// If the group mode is separate, and this user does not have editing privileges,
242 /// then only the user's group can be viewed.
243 if ($course->groupmode == SEPARATEGROUPS and !has_capability('moodle/course:managegroups', context_course::instance($course->id))) {
244 if (isset($SESSION->currentgroup[$course->id])) {
245 $groupid = $SESSION->currentgroup[$course->id];
247 $groupid = groups_get_all_groups($course->id, $USER->id);
248 if (is_array($groupid)) {
249 $groupid = array_shift(array_keys($groupid));
250 $SESSION->currentgroup[$course->id] = $groupid;
256 /// If this course doesn't have groups, no groupid can be specified.
257 else if (!$course->groupmode) {
264 if ($course->id != SITEID || $modid != 0) {
265 $joins[] = "l.course = :courseid";
266 $params['courseid'] = $course->id;
270 $joins[] = "l.module = :modname";
271 $params['modname'] = $modname;
274 if ('site_errors' === $modid) {
275 $joins[] = "( l.action='error' OR l.action='infected' )";
277 $joins[] = "l.cmid = :modid";
278 $params['modid'] = $modid;
282 $firstletter = substr($modaction, 0, 1);
283 if ($firstletter == '-') {
284 $joins[] = $DB->sql_like('l.action', ':modaction', false, true, true);
285 $params['modaction'] = '%'.substr($modaction, 1).'%';
287 $joins[] = $DB->sql_like('l.action', ':modaction', false);
288 $params['modaction'] = '%'.$modaction.'%';
293 /// Getting all members of a group.
294 if ($groupid and !$user) {
295 if ($gusers = groups_get_members($groupid)) {
296 $gusers = array_keys($gusers);
297 $joins[] = 'l.userid IN (' . implode(',', $gusers) . ')';
299 $joins[] = 'l.userid = 0'; // No users in groups, so we want something that will always be false.
303 $joins[] = "l.userid = :userid";
304 $params['userid'] = $user;
308 $enddate = $date + 86400;
309 $joins[] = "l.time > :date AND l.time < :enddate";
310 $params['date'] = $date;
311 $params['enddate'] = $enddate;
314 $selector = implode(' AND ', $joins);
316 $totalcount = 0; // Initialise
318 $result['logs'] = get_logs($selector, $params, $order, $limitfrom, $limitnum, $totalcount);
319 $result['totalcount'] = $totalcount;
324 function print_log($course, $user=0, $date=0, $order="l.time ASC", $page=0, $perpage=100,
325 $url="", $modname="", $modid=0, $modaction="", $groupid=0) {
327 global $CFG, $DB, $OUTPUT;
329 if (!$logs = build_logs_array($course, $user, $date, $order, $page*$perpage, $perpage,
330 $modname, $modid, $modaction, $groupid)) {
331 echo $OUTPUT->notification("No logs found!");
332 echo $OUTPUT->footer();
338 if ($course->id == SITEID) {
340 if ($ccc = get_courses('all', 'c.id ASC', 'c.id,c.shortname')) {
341 foreach ($ccc as $cc) {
342 $courses[$cc->id] = $cc->shortname;
346 $courses[$course->id] = $course->shortname;
349 $totalcount = $logs['totalcount'];
352 $tt = getdate(time());
353 $today = mktime (0, 0, 0, $tt["mon"], $tt["mday"], $tt["year"]);
355 $strftimedatetime = get_string("strftimedatetime");
357 echo "<div class=\"info\">\n";
358 print_string("displayingrecords", "", $totalcount);
361 echo $OUTPUT->paging_bar($totalcount, $page, $perpage, "$url&perpage=$perpage");
363 $table = new html_table();
364 $table->classes = array('logtable','generaltable');
365 $table->align = array('right', 'left', 'left');
366 $table->head = array(
368 get_string('ip_address'),
369 get_string('fullnameuser'),
370 get_string('action'),
373 $table->data = array();
375 if ($course->id == SITEID) {
376 array_unshift($table->align, 'left');
377 array_unshift($table->head, get_string('course'));
380 // Make sure that the logs array is an array, even it is empty, to avoid warnings from the foreach.
381 if (empty($logs['logs'])) {
382 $logs['logs'] = array();
385 foreach ($logs['logs'] as $log) {
387 if (isset($ldcache[$log->module][$log->action])) {
388 $ld = $ldcache[$log->module][$log->action];
390 $ld = $DB->get_record('log_display', array('module'=>$log->module, 'action'=>$log->action));
391 $ldcache[$log->module][$log->action] = $ld;
393 if ($ld && is_numeric($log->info)) {
394 // ugly hack to make sure fullname is shown correctly
395 if ($ld->mtable == 'user' && $ld->field == $DB->sql_concat('firstname', "' '" , 'lastname')) {
396 $log->info = fullname($DB->get_record($ld->mtable, array('id'=>$log->info)), true);
398 $log->info = $DB->get_field($ld->mtable, $ld->field, array('id'=>$log->info));
403 $log->info = format_string($log->info);
405 // If $log->url has been trimmed short by the db size restriction
406 // code in add_to_log, keep a note so we don't add a link to a broken url
407 $brokenurl=(core_text::strlen($log->url)==100 && core_text::substr($log->url,97)=='...');
410 if ($course->id == SITEID) {
411 if (empty($log->course)) {
412 $row[] = get_string('site');
414 $row[] = "<a href=\"{$CFG->wwwroot}/course/view.php?id={$log->course}\">". format_string($courses[$log->course])."</a>";
418 $row[] = userdate($log->time, '%a').' '.userdate($log->time, $strftimedatetime);
420 $link = new moodle_url("/iplookup/index.php?ip=$log->ip&user=$log->userid");
421 $row[] = $OUTPUT->action_link($link, $log->ip, new popup_action('click', $link, 'iplookup', array('height' => 440, 'width' => 700)));
423 $row[] = html_writer::link(new moodle_url("/user/view.php?id={$log->userid}&course={$log->course}"), fullname($log, has_capability('moodle/site:viewfullnames', context_course::instance($course->id))));
425 $displayaction="$log->module $log->action";
427 $row[] = $displayaction;
429 $link = make_log_url($log->module,$log->url);
430 $row[] = $OUTPUT->action_link($link, $displayaction, new popup_action('click', $link, 'fromloglive'), array('height' => 440, 'width' => 700));
433 $table->data[] = $row;
436 echo html_writer::table($table);
437 echo $OUTPUT->paging_bar($totalcount, $page, $perpage, "$url&perpage=$perpage");
441 function print_mnet_log($hostid, $course, $user=0, $date=0, $order="l.time ASC", $page=0, $perpage=100,
442 $url="", $modname="", $modid=0, $modaction="", $groupid=0) {
444 global $CFG, $DB, $OUTPUT;
446 if (!$logs = build_mnet_logs_array($hostid, $course, $user, $date, $order, $page*$perpage, $perpage,
447 $modname, $modid, $modaction, $groupid)) {
448 echo $OUTPUT->notification("No logs found!");
449 echo $OUTPUT->footer();
453 if ($course->id == SITEID) {
455 if ($ccc = get_courses('all', 'c.id ASC', 'c.id,c.shortname,c.visible')) {
456 foreach ($ccc as $cc) {
457 $courses[$cc->id] = $cc->shortname;
462 $totalcount = $logs['totalcount'];
465 $tt = getdate(time());
466 $today = mktime (0, 0, 0, $tt["mon"], $tt["mday"], $tt["year"]);
468 $strftimedatetime = get_string("strftimedatetime");
470 echo "<div class=\"info\">\n";
471 print_string("displayingrecords", "", $totalcount);
474 echo $OUTPUT->paging_bar($totalcount, $page, $perpage, "$url&perpage=$perpage");
476 echo "<table class=\"logtable\" cellpadding=\"3\" cellspacing=\"0\">\n";
478 if ($course->id == SITEID) {
479 echo "<th class=\"c0 header\">".get_string('course')."</th>\n";
481 echo "<th class=\"c1 header\">".get_string('time')."</th>\n";
482 echo "<th class=\"c2 header\">".get_string('ip_address')."</th>\n";
483 echo "<th class=\"c3 header\">".get_string('fullnameuser')."</th>\n";
484 echo "<th class=\"c4 header\">".get_string('action')."</th>\n";
485 echo "<th class=\"c5 header\">".get_string('info')."</th>\n";
488 if (empty($logs['logs'])) {
494 foreach ($logs['logs'] as $log) {
496 $log->info = $log->coursename;
497 $row = ($row + 1) % 2;
499 if (isset($ldcache[$log->module][$log->action])) {
500 $ld = $ldcache[$log->module][$log->action];
502 $ld = $DB->get_record('log_display', array('module'=>$log->module, 'action'=>$log->action));
503 $ldcache[$log->module][$log->action] = $ld;
505 if (0 && $ld && !empty($log->info)) {
506 // ugly hack to make sure fullname is shown correctly
507 if (($ld->mtable == 'user') and ($ld->field == $DB->sql_concat('firstname', "' '" , 'lastname'))) {
508 $log->info = fullname($DB->get_record($ld->mtable, array('id'=>$log->info)), true);
510 $log->info = $DB->get_field($ld->mtable, $ld->field, array('id'=>$log->info));
515 $log->info = format_string($log->info);
517 echo '<tr class="r'.$row.'">';
518 if ($course->id == SITEID) {
519 $courseshortname = format_string($courses[$log->course], true, array('context' => context_course::instance(SITEID)));
520 echo "<td class=\"r$row c0\" >\n";
521 echo " <a href=\"{$CFG->wwwroot}/course/view.php?id={$log->course}\">".$courseshortname."</a>\n";
524 echo "<td class=\"r$row c1\" align=\"right\">".userdate($log->time, '%a').
525 ' '.userdate($log->time, $strftimedatetime)."</td>\n";
526 echo "<td class=\"r$row c2\" >\n";
527 $link = new moodle_url("/iplookup/index.php?ip=$log->ip&user=$log->userid");
528 echo $OUTPUT->action_link($link, $log->ip, new popup_action('click', $link, 'iplookup', array('height' => 400, 'width' => 700)));
530 $fullname = fullname($log, has_capability('moodle/site:viewfullnames', context_course::instance($course->id)));
531 echo "<td class=\"r$row c3\" >\n";
532 echo " <a href=\"$CFG->wwwroot/user/view.php?id={$log->userid}\">$fullname</a>\n";
534 echo "<td class=\"r$row c4\">\n";
535 echo $log->action .': '.$log->module;
537 echo "<td class=\"r$row c5\">{$log->info}</td>\n";
542 echo $OUTPUT->paging_bar($totalcount, $page, $perpage, "$url&perpage=$perpage");
546 function print_log_csv($course, $user, $date, $order='l.time DESC', $modname,
547 $modid, $modaction, $groupid) {
550 require_once($CFG->libdir . '/csvlib.class.php');
552 $csvexporter = new csv_export_writer('tab');
555 $header[] = get_string('course');
556 $header[] = get_string('time');
557 $header[] = get_string('ip_address');
558 $header[] = get_string('fullnameuser');
559 $header[] = get_string('action');
560 $header[] = get_string('info');
562 if (!$logs = build_logs_array($course, $user, $date, $order, '', '',
563 $modname, $modid, $modaction, $groupid)) {
569 if ($course->id == SITEID) {
571 if ($ccc = get_courses('all', 'c.id ASC', 'c.id,c.shortname')) {
572 foreach ($ccc as $cc) {
573 $courses[$cc->id] = $cc->shortname;
577 $courses[$course->id] = $course->shortname;
582 $tt = getdate(time());
583 $today = mktime (0, 0, 0, $tt["mon"], $tt["mday"], $tt["year"]);
585 $strftimedatetime = get_string("strftimedatetime");
587 $csvexporter->set_filename('logs', '.txt');
588 $title = array(get_string('savedat').userdate(time(), $strftimedatetime));
589 $csvexporter->add_data($title);
590 $csvexporter->add_data($header);
592 if (empty($logs['logs'])) {
596 foreach ($logs['logs'] as $log) {
597 if (isset($ldcache[$log->module][$log->action])) {
598 $ld = $ldcache[$log->module][$log->action];
600 $ld = $DB->get_record('log_display', array('module'=>$log->module, 'action'=>$log->action));
601 $ldcache[$log->module][$log->action] = $ld;
603 if ($ld && is_numeric($log->info)) {
604 // ugly hack to make sure fullname is shown correctly
605 if (($ld->mtable == 'user') and ($ld->field == $DB->sql_concat('firstname', "' '" , 'lastname'))) {
606 $log->info = fullname($DB->get_record($ld->mtable, array('id'=>$log->info)), true);
608 $log->info = $DB->get_field($ld->mtable, $ld->field, array('id'=>$log->info));
613 $log->info = format_string($log->info);
614 $log->info = strip_tags(urldecode($log->info)); // Some XSS protection
616 $coursecontext = context_course::instance($course->id);
617 $firstField = format_string($courses[$log->course], true, array('context' => $coursecontext));
618 $fullname = fullname($log, has_capability('moodle/site:viewfullnames', $coursecontext));
619 $actionurl = $CFG->wwwroot. make_log_url($log->module,$log->url);
620 $row = array($firstField, userdate($log->time, $strftimedatetime), $log->ip, $fullname, $log->module.' '.$log->action.' ('.$actionurl.')', $log->info);
621 $csvexporter->add_data($row);
623 $csvexporter->download_file();
628 function print_log_xls($course, $user, $date, $order='l.time DESC', $modname,
629 $modid, $modaction, $groupid) {
633 require_once("$CFG->libdir/excellib.class.php");
635 if (!$logs = build_logs_array($course, $user, $date, $order, '', '',
636 $modname, $modid, $modaction, $groupid)) {
642 if ($course->id == SITEID) {
644 if ($ccc = get_courses('all', 'c.id ASC', 'c.id,c.shortname')) {
645 foreach ($ccc as $cc) {
646 $courses[$cc->id] = $cc->shortname;
650 $courses[$course->id] = $course->shortname;
655 $tt = getdate(time());
656 $today = mktime (0, 0, 0, $tt["mon"], $tt["mday"], $tt["year"]);
658 $strftimedatetime = get_string("strftimedatetime");
660 $nroPages = ceil(count($logs)/(EXCELROWS-FIRSTUSEDEXCELROW+1));
661 $filename = 'logs_'.userdate(time(),get_string('backupnameformat', 'langconfig'),99,false);
664 $workbook = new MoodleExcelWorkbook('-');
665 $workbook->send($filename);
667 $worksheet = array();
668 $headers = array(get_string('course'), get_string('time'), get_string('ip_address'),
669 get_string('fullnameuser'), get_string('action'), get_string('info'));
671 // Creating worksheets
672 for ($wsnumber = 1; $wsnumber <= $nroPages; $wsnumber++) {
673 $sheettitle = get_string('logs').' '.$wsnumber.'-'.$nroPages;
674 $worksheet[$wsnumber] = $workbook->add_worksheet($sheettitle);
675 $worksheet[$wsnumber]->set_column(1, 1, 30);
676 $worksheet[$wsnumber]->write_string(0, 0, get_string('savedat').
677 userdate(time(), $strftimedatetime));
679 foreach ($headers as $item) {
680 $worksheet[$wsnumber]->write(FIRSTUSEDEXCELROW-1,$col,$item,'');
685 if (empty($logs['logs'])) {
690 $formatDate =& $workbook->add_format();
691 $formatDate->set_num_format(get_string('log_excel_date_format'));
693 $row = FIRSTUSEDEXCELROW;
695 $myxls =& $worksheet[$wsnumber];
696 foreach ($logs['logs'] as $log) {
697 if (isset($ldcache[$log->module][$log->action])) {
698 $ld = $ldcache[$log->module][$log->action];
700 $ld = $DB->get_record('log_display', array('module'=>$log->module, 'action'=>$log->action));
701 $ldcache[$log->module][$log->action] = $ld;
703 if ($ld && is_numeric($log->info)) {
704 // ugly hack to make sure fullname is shown correctly
705 if (($ld->mtable == 'user') and ($ld->field == $DB->sql_concat('firstname', "' '" , 'lastname'))) {
706 $log->info = fullname($DB->get_record($ld->mtable, array('id'=>$log->info)), true);
708 $log->info = $DB->get_field($ld->mtable, $ld->field, array('id'=>$log->info));
713 $log->info = format_string($log->info);
714 $log->info = strip_tags(urldecode($log->info)); // Some XSS protection
717 if ($row > EXCELROWS) {
719 $myxls =& $worksheet[$wsnumber];
720 $row = FIRSTUSEDEXCELROW;
724 $coursecontext = context_course::instance($course->id);
726 $myxls->write($row, 0, format_string($courses[$log->course], true, array('context' => $coursecontext)), '');
727 $myxls->write_date($row, 1, $log->time, $formatDate); // write_date() does conversion/timezone support. MDL-14934
728 $myxls->write($row, 2, $log->ip, '');
729 $fullname = fullname($log, has_capability('moodle/site:viewfullnames', $coursecontext));
730 $myxls->write($row, 3, $fullname, '');
731 $actionurl = $CFG->wwwroot. make_log_url($log->module,$log->url);
732 $myxls->write($row, 4, $log->module.' '.$log->action.' ('.$actionurl.')', '');
733 $myxls->write($row, 5, $log->info, '');
742 function print_log_ods($course, $user, $date, $order='l.time DESC', $modname,
743 $modid, $modaction, $groupid) {
747 require_once("$CFG->libdir/odslib.class.php");
749 if (!$logs = build_logs_array($course, $user, $date, $order, '', '',
750 $modname, $modid, $modaction, $groupid)) {
756 if ($course->id == SITEID) {
758 if ($ccc = get_courses('all', 'c.id ASC', 'c.id,c.shortname')) {
759 foreach ($ccc as $cc) {
760 $courses[$cc->id] = $cc->shortname;
764 $courses[$course->id] = $course->shortname;
769 $tt = getdate(time());
770 $today = mktime (0, 0, 0, $tt["mon"], $tt["mday"], $tt["year"]);
772 $strftimedatetime = get_string("strftimedatetime");
774 $nroPages = ceil(count($logs)/(EXCELROWS-FIRSTUSEDEXCELROW+1));
775 $filename = 'logs_'.userdate(time(),get_string('backupnameformat', 'langconfig'),99,false);
778 $workbook = new MoodleODSWorkbook('-');
779 $workbook->send($filename);
781 $worksheet = array();
782 $headers = array(get_string('course'), get_string('time'), get_string('ip_address'),
783 get_string('fullnameuser'), get_string('action'), get_string('info'));
785 // Creating worksheets
786 for ($wsnumber = 1; $wsnumber <= $nroPages; $wsnumber++) {
787 $sheettitle = get_string('logs').' '.$wsnumber.'-'.$nroPages;
788 $worksheet[$wsnumber] = $workbook->add_worksheet($sheettitle);
789 $worksheet[$wsnumber]->set_column(1, 1, 30);
790 $worksheet[$wsnumber]->write_string(0, 0, get_string('savedat').
791 userdate(time(), $strftimedatetime));
793 foreach ($headers as $item) {
794 $worksheet[$wsnumber]->write(FIRSTUSEDEXCELROW-1,$col,$item,'');
799 if (empty($logs['logs'])) {
804 $formatDate =& $workbook->add_format();
805 $formatDate->set_num_format(get_string('log_excel_date_format'));
807 $row = FIRSTUSEDEXCELROW;
809 $myxls =& $worksheet[$wsnumber];
810 foreach ($logs['logs'] as $log) {
811 if (isset($ldcache[$log->module][$log->action])) {
812 $ld = $ldcache[$log->module][$log->action];
814 $ld = $DB->get_record('log_display', array('module'=>$log->module, 'action'=>$log->action));
815 $ldcache[$log->module][$log->action] = $ld;
817 if ($ld && is_numeric($log->info)) {
818 // ugly hack to make sure fullname is shown correctly
819 if (($ld->mtable == 'user') and ($ld->field == $DB->sql_concat('firstname', "' '" , 'lastname'))) {
820 $log->info = fullname($DB->get_record($ld->mtable, array('id'=>$log->info)), true);
822 $log->info = $DB->get_field($ld->mtable, $ld->field, array('id'=>$log->info));
827 $log->info = format_string($log->info);
828 $log->info = strip_tags(urldecode($log->info)); // Some XSS protection
831 if ($row > EXCELROWS) {
833 $myxls =& $worksheet[$wsnumber];
834 $row = FIRSTUSEDEXCELROW;
838 $coursecontext = context_course::instance($course->id);
840 $myxls->write_string($row, 0, format_string($courses[$log->course], true, array('context' => $coursecontext)));
841 $myxls->write_date($row, 1, $log->time);
842 $myxls->write_string($row, 2, $log->ip);
843 $fullname = fullname($log, has_capability('moodle/site:viewfullnames', $coursecontext));
844 $myxls->write_string($row, 3, $fullname);
845 $actionurl = $CFG->wwwroot. make_log_url($log->module,$log->url);
846 $myxls->write_string($row, 4, $log->module.' '.$log->action.' ('.$actionurl.')');
847 $myxls->write_string($row, 5, $log->info);
857 * Checks the integrity of the course data.
859 * In summary - compares course_sections.sequence and course_modules.section.
861 * More detailed, checks that:
862 * - course_sections.sequence contains each module id not more than once in the course
863 * - for each moduleid from course_sections.sequence the field course_modules.section
864 * refers to the same section id (this means course_sections.sequence is more
865 * important if they are different)
866 * - ($fullcheck only) each module in the course is present in one of
867 * course_sections.sequence
868 * - ($fullcheck only) removes non-existing course modules from section sequences
870 * If there are any mismatches, the changes are made and records are updated in DB.
872 * Course cache is NOT rebuilt if there are any errors!
874 * This function is used each time when course cache is being rebuilt with $fullcheck = false
875 * and in CLI script admin/cli/fix_course_sequence.php with $fullcheck = true
877 * @param int $courseid id of the course
878 * @param array $rawmods result of funciton {@link get_course_mods()} - containst
879 * the list of enabled course modules in the course. Retrieved from DB if not specified.
880 * Argument ignored in cashe of $fullcheck, the list is retrieved form DB anyway.
881 * @param array $sections records from course_sections table for this course.
882 * Retrieved from DB if not specified
883 * @param bool $fullcheck Will add orphaned modules to their sections and remove non-existing
884 * course modules from sequences. Only to be used in site maintenance mode when we are
885 * sure that another user is not in the middle of the process of moving/removing a module.
886 * @param bool $checkonly Only performs the check without updating DB, outputs all errors as debug messages.
887 * @return array array of messages with found problems. Empty output means everything is ok
889 function course_integrity_check($courseid, $rawmods = null, $sections = null, $fullcheck = false, $checkonly = false) {
892 if ($sections === null) {
893 $sections = $DB->get_records('course_sections', array('course' => $courseid), 'section', 'id,section,sequence');
896 // Retrieve all records from course_modules regardless of module type visibility.
897 $rawmods = $DB->get_records('course_modules', array('course' => $courseid), 'id', 'id,section');
899 if ($rawmods === null) {
900 $rawmods = get_course_mods($courseid);
902 if (!$fullcheck && (empty($sections) || empty($rawmods))) {
903 // If either of the arrays is empty, no modules are displayed anyway.
906 $debuggingprefix = 'Failed integrity check for course ['.$courseid.']. ';
908 // First make sure that each module id appears in section sequences only once.
909 // If it appears in several section sequences the last section wins.
910 // If it appears twice in one section sequence, the first occurence wins.
911 $modsection = array();
912 foreach ($sections as $sectionid => $section) {
913 $sections[$sectionid]->newsequence = $section->sequence;
914 if (!empty($section->sequence)) {
915 $sequence = explode(",", $section->sequence);
916 $sequenceunique = array_unique($sequence);
917 if (count($sequenceunique) != count($sequence)) {
918 // Some course module id appears in this section sequence more than once.
919 ksort($sequenceunique); // Preserve initial order of modules.
920 $sequence = array_values($sequenceunique);
921 $sections[$sectionid]->newsequence = join(',', $sequence);
922 $messages[] = $debuggingprefix.'Sequence for course section ['.
923 $sectionid.'] is "'.$sections[$sectionid]->sequence.'", must be "'.$sections[$sectionid]->newsequence.'"';
925 foreach ($sequence as $cmid) {
926 if (array_key_exists($cmid, $modsection) && isset($rawmods[$cmid])) {
927 // Some course module id appears to be in more than one section's sequences.
928 $wrongsectionid = $modsection[$cmid];
929 $sections[$wrongsectionid]->newsequence = trim(preg_replace("/,$cmid,/", ',', ','.$sections[$wrongsectionid]->newsequence. ','), ',');
930 $messages[] = $debuggingprefix.'Course module ['.$cmid.'] must be removed from sequence of section ['.
931 $wrongsectionid.'] because it is also present in sequence of section ['.$sectionid.']';
933 $modsection[$cmid] = $sectionid;
938 // Add orphaned modules to their sections if they exist or to section 0 otherwise.
940 foreach ($rawmods as $cmid => $mod) {
941 if (!isset($modsection[$cmid])) {
942 // This is a module that is not mentioned in course_section.sequence at all.
943 // Add it to the section $mod->section or to the last available section.
944 if ($mod->section && isset($sections[$mod->section])) {
945 $modsection[$cmid] = $mod->section;
947 $firstsection = reset($sections);
948 $modsection[$cmid] = $firstsection->id;
950 $sections[$modsection[$cmid]]->newsequence = trim($sections[$modsection[$cmid]]->newsequence.','.$cmid, ',');
951 $messages[] = $debuggingprefix.'Course module ['.$cmid.'] is missing from sequence of section ['.
952 $modsection[$cmid].']';
955 foreach ($modsection as $cmid => $sectionid) {
956 if (!isset($rawmods[$cmid])) {
957 // Section $sectionid refers to module id that does not exist.
958 $sections[$sectionid]->newsequence = trim(preg_replace("/,$cmid,/", ',', ','.$sections[$sectionid]->newsequence.','), ',');
959 $messages[] = $debuggingprefix.'Course module ['.$cmid.
960 '] does not exist but is present in the sequence of section ['.$sectionid.']';
965 // Update changed sections.
966 if (!$checkonly && !empty($messages)) {
967 foreach ($sections as $sectionid => $section) {
968 if ($section->newsequence !== $section->sequence) {
969 $DB->update_record('course_sections', array('id' => $sectionid, 'sequence' => $section->newsequence));
974 // Now make sure that all modules point to the correct sections.
975 foreach ($rawmods as $cmid => $mod) {
976 if (isset($modsection[$cmid]) && $modsection[$cmid] != $mod->section) {
978 $DB->update_record('course_modules', array('id' => $cmid, 'section' => $modsection[$cmid]));
980 $messages[] = $debuggingprefix.'Course module ['.$cmid.
981 '] points to section ['.$mod->section.'] instead of ['.$modsection[$cmid].']';
989 * For a given course, returns an array of course activity objects
990 * Each item in the array contains he following properties:
992 function get_array_of_activities($courseid) {
993 // cm - course module id
994 // mod - name of the module (eg forum)
995 // section - the number of the section (eg week or topic)
996 // name - the name of the instance
997 // visible - is the instance visible or not
998 // groupingid - grouping id
999 // groupmembersonly - is this instance visible to group members only
1000 // extra - contains extra string to include in any link
1002 if(!empty($CFG->enableavailability)) {
1003 require_once($CFG->libdir.'/conditionlib.php');
1006 $course = $DB->get_record('course', array('id'=>$courseid));
1008 if (empty($course)) {
1009 throw new moodle_exception('courseidnotfound');
1014 $rawmods = get_course_mods($courseid);
1015 if (empty($rawmods)) {
1016 return $mod; // always return array
1019 if ($sections = $DB->get_records('course_sections', array('course' => $courseid), 'section ASC', 'id,section,sequence')) {
1020 // First check and correct obvious mismatches between course_sections.sequence and course_modules.section.
1021 if ($errormessages = course_integrity_check($courseid, $rawmods, $sections)) {
1022 debugging(join('<br>', $errormessages));
1023 $rawmods = get_course_mods($courseid);
1024 $sections = $DB->get_records('course_sections', array('course' => $courseid), 'section ASC', 'id,section,sequence');
1026 // Build array of activities.
1027 foreach ($sections as $section) {
1028 if (!empty($section->sequence)) {
1029 $sequence = explode(",", $section->sequence);
1030 foreach ($sequence as $seq) {
1031 if (empty($rawmods[$seq])) {
1034 $mod[$seq] = new stdClass();
1035 $mod[$seq]->id = $rawmods[$seq]->instance;
1036 $mod[$seq]->cm = $rawmods[$seq]->id;
1037 $mod[$seq]->mod = $rawmods[$seq]->modname;
1039 // Oh dear. Inconsistent names left here for backward compatibility.
1040 $mod[$seq]->section = $section->section;
1041 $mod[$seq]->sectionid = $rawmods[$seq]->section;
1043 $mod[$seq]->module = $rawmods[$seq]->module;
1044 $mod[$seq]->added = $rawmods[$seq]->added;
1045 $mod[$seq]->score = $rawmods[$seq]->score;
1046 $mod[$seq]->idnumber = $rawmods[$seq]->idnumber;
1047 $mod[$seq]->visible = $rawmods[$seq]->visible;
1048 $mod[$seq]->visibleold = $rawmods[$seq]->visibleold;
1049 $mod[$seq]->groupmode = $rawmods[$seq]->groupmode;
1050 $mod[$seq]->groupingid = $rawmods[$seq]->groupingid;
1051 $mod[$seq]->groupmembersonly = $rawmods[$seq]->groupmembersonly;
1052 $mod[$seq]->indent = $rawmods[$seq]->indent;
1053 $mod[$seq]->completion = $rawmods[$seq]->completion;
1054 $mod[$seq]->extra = "";
1055 $mod[$seq]->completiongradeitemnumber =
1056 $rawmods[$seq]->completiongradeitemnumber;
1057 $mod[$seq]->completionview = $rawmods[$seq]->completionview;
1058 $mod[$seq]->completionexpected = $rawmods[$seq]->completionexpected;
1059 $mod[$seq]->showdescription = $rawmods[$seq]->showdescription;
1060 $mod[$seq]->availability = $rawmods[$seq]->availability;
1062 $modname = $mod[$seq]->mod;
1063 $functionname = $modname."_get_coursemodule_info";
1065 if (!file_exists("$CFG->dirroot/mod/$modname/lib.php")) {
1069 include_once("$CFG->dirroot/mod/$modname/lib.php");
1071 if ($hasfunction = function_exists($functionname)) {
1072 if ($info = $functionname($rawmods[$seq])) {
1073 if (!empty($info->icon)) {
1074 $mod[$seq]->icon = $info->icon;
1076 if (!empty($info->iconcomponent)) {
1077 $mod[$seq]->iconcomponent = $info->iconcomponent;
1079 if (!empty($info->name)) {
1080 $mod[$seq]->name = $info->name;
1082 if ($info instanceof cached_cm_info) {
1083 // When using cached_cm_info you can include three new fields
1084 // that aren't available for legacy code
1085 if (!empty($info->content)) {
1086 $mod[$seq]->content = $info->content;
1088 if (!empty($info->extraclasses)) {
1089 $mod[$seq]->extraclasses = $info->extraclasses;
1091 if (!empty($info->iconurl)) {
1092 // Convert URL to string as it's easier to store. Also serialized object contains \0 byte and can not be written to Postgres DB.
1093 $url = new moodle_url($info->iconurl);
1094 $mod[$seq]->iconurl = $url->out(false);
1096 if (!empty($info->onclick)) {
1097 $mod[$seq]->onclick = $info->onclick;
1099 if (!empty($info->customdata)) {
1100 $mod[$seq]->customdata = $info->customdata;
1103 // When using a stdclass, the (horrible) deprecated ->extra field
1104 // is available for BC
1105 if (!empty($info->extra)) {
1106 $mod[$seq]->extra = $info->extra;
1111 // When there is no modname_get_coursemodule_info function,
1112 // but showdescriptions is enabled, then we use the 'intro'
1113 // and 'introformat' fields in the module table
1114 if (!$hasfunction && $rawmods[$seq]->showdescription) {
1115 if ($modvalues = $DB->get_record($rawmods[$seq]->modname,
1116 array('id' => $rawmods[$seq]->instance), 'name, intro, introformat')) {
1117 // Set content from intro and introformat. Filters are disabled
1118 // because we filter it with format_text at display time
1119 $mod[$seq]->content = format_module_intro($rawmods[$seq]->modname,
1120 $modvalues, $rawmods[$seq]->id, false);
1122 // To save making another query just below, put name in here
1123 $mod[$seq]->name = $modvalues->name;
1126 if (!isset($mod[$seq]->name)) {
1127 $mod[$seq]->name = $DB->get_field($rawmods[$seq]->modname, "name", array("id"=>$rawmods[$seq]->instance));
1130 // Minimise the database size by unsetting default options when they are
1131 // 'empty'. This list corresponds to code in the cm_info constructor.
1132 foreach (array('idnumber', 'groupmode', 'groupingid', 'groupmembersonly',
1133 'indent', 'completion', 'extra', 'extraclasses', 'iconurl', 'onclick', 'content',
1134 'icon', 'iconcomponent', 'customdata', 'availability',
1135 'completionview', 'completionexpected', 'score', 'showdescription')
1137 if (property_exists($mod[$seq], $property) &&
1138 empty($mod[$seq]->{$property})) {
1139 unset($mod[$seq]->{$property});
1142 // Special case: this value is usually set to null, but may be 0
1143 if (property_exists($mod[$seq], 'completiongradeitemnumber') &&
1144 is_null($mod[$seq]->completiongradeitemnumber)) {
1145 unset($mod[$seq]->completiongradeitemnumber);
1155 * Returns the localised human-readable names of all used modules
1157 * @param bool $plural if true returns the plural forms of the names
1158 * @return array where key is the module name (component name without 'mod_') and
1159 * the value is the human-readable string. Array sorted alphabetically by value
1161 function get_module_types_names($plural = false) {
1162 static $modnames = null;
1164 if ($modnames === null) {
1165 $modnames = array(0 => array(), 1 => array());
1166 if ($allmods = $DB->get_records("modules")) {
1167 foreach ($allmods as $mod) {
1168 if (file_exists("$CFG->dirroot/mod/$mod->name/lib.php") && $mod->visible) {
1169 $modnames[0][$mod->name] = get_string("modulename", "$mod->name");
1170 $modnames[1][$mod->name] = get_string("modulenameplural", "$mod->name");
1173 core_collator::asort($modnames[0]);
1174 core_collator::asort($modnames[1]);
1177 return $modnames[(int)$plural];
1181 * Set highlighted section. Only one section can be highlighted at the time.
1183 * @param int $courseid course id
1184 * @param int $marker highlight section with this number, 0 means remove higlightin
1187 function course_set_marker($courseid, $marker) {
1189 $DB->set_field("course", "marker", $marker, array('id' => $courseid));
1190 format_base::reset_course_cache($courseid);
1194 * For a given course section, marks it visible or hidden,
1195 * and does the same for every activity in that section
1197 * @param int $courseid course id
1198 * @param int $sectionnumber The section number to adjust
1199 * @param int $visibility The new visibility
1200 * @return array A list of resources which were hidden in the section
1202 function set_section_visible($courseid, $sectionnumber, $visibility) {
1205 $resourcestotoggle = array();
1206 if ($section = $DB->get_record("course_sections", array("course"=>$courseid, "section"=>$sectionnumber))) {
1207 $DB->set_field("course_sections", "visible", "$visibility", array("id"=>$section->id));
1209 $event = \core\event\course_section_updated::create(array(
1210 'context' => context_course::instance($courseid),
1211 'objectid' => $section->id,
1213 'sectionnum' => $sectionnumber
1216 $event->add_record_snapshot('course_sections', $section);
1219 if (!empty($section->sequence)) {
1220 $modules = explode(",", $section->sequence);
1221 foreach ($modules as $moduleid) {
1222 if ($cm = get_coursemodule_from_id(null, $moduleid, $courseid)) {
1224 // As we unhide the section, we use the previously saved visibility stored in visibleold.
1225 set_coursemodule_visible($moduleid, $cm->visibleold);
1227 // We hide the section, so we hide the module but we store the original state in visibleold.
1228 set_coursemodule_visible($moduleid, 0);
1229 $DB->set_field('course_modules', 'visibleold', $cm->visible, array('id' => $moduleid));
1231 \core\event\course_module_updated::create_from_cm($cm)->trigger();
1235 rebuild_course_cache($courseid, true);
1237 // Determine which modules are visible for AJAX update
1238 if (!empty($modules)) {
1239 list($insql, $params) = $DB->get_in_or_equal($modules);
1240 $select = 'id ' . $insql . ' AND visible = ?';
1241 array_push($params, $visibility);
1243 $select .= ' AND visibleold = 1';
1245 $resourcestotoggle = $DB->get_fieldset_select('course_modules', 'id', $select, $params);
1248 return $resourcestotoggle;
1252 * Retrieve all metadata for the requested modules
1254 * @param object $course The Course
1255 * @param array $modnames An array containing the list of modules and their
1257 * @param int $sectionreturn The section to return to
1258 * @return array A list of stdClass objects containing metadata about each
1261 function get_module_metadata($course, $modnames, $sectionreturn = null) {
1262 global $CFG, $OUTPUT;
1264 // get_module_metadata will be called once per section on the page and courses may show
1265 // different modules to one another
1266 static $modlist = array();
1267 if (!isset($modlist[$course->id])) {
1268 $modlist[$course->id] = array();
1272 $urlbase = new moodle_url('/course/mod.php', array('id' => $course->id, 'sesskey' => sesskey()));
1273 if ($sectionreturn !== null) {
1274 $urlbase->param('sr', $sectionreturn);
1276 foreach($modnames as $modname => $modnamestr) {
1277 if (!course_allowed_module($course, $modname)) {
1280 if (isset($modlist[$course->id][$modname])) {
1281 // This module is already cached
1282 $return[$modname] = $modlist[$course->id][$modname];
1286 // Include the module lib
1287 $libfile = "$CFG->dirroot/mod/$modname/lib.php";
1288 if (!file_exists($libfile)) {
1291 include_once($libfile);
1293 // NOTE: this is legacy stuff, module subtypes are very strongly discouraged!!
1294 $gettypesfunc = $modname.'_get_types';
1295 $types = MOD_SUBTYPE_NO_CHILDREN;
1296 if (function_exists($gettypesfunc)) {
1297 $types = $gettypesfunc();
1299 if ($types !== MOD_SUBTYPE_NO_CHILDREN) {
1300 if (is_array($types) && count($types) > 0) {
1301 $group = new stdClass();
1302 $group->name = $modname;
1303 $group->icon = $OUTPUT->pix_icon('icon', '', $modname, array('class' => 'icon'));
1304 foreach($types as $type) {
1305 if ($type->typestr === '--') {
1308 if (strpos($type->typestr, '--') === 0) {
1309 $group->title = str_replace('--', '', $type->typestr);
1312 // Set the Sub Type metadata
1313 $subtype = new stdClass();
1314 $subtype->title = $type->typestr;
1315 $subtype->type = str_replace('&', '&', $type->type);
1316 $subtype->name = preg_replace('/.*type=/', '', $subtype->type);
1317 $subtype->archetype = $type->modclass;
1319 // The group archetype should match the subtype archetypes and all subtypes
1320 // should have the same archetype
1321 $group->archetype = $subtype->archetype;
1323 if (!empty($type->help)) {
1324 $subtype->help = $type->help;
1325 } else if (get_string_manager()->string_exists('help' . $subtype->name, $modname)) {
1326 $subtype->help = get_string('help' . $subtype->name, $modname);
1328 $subtype->link = new moodle_url($urlbase, array('add' => $modname, 'type' => $subtype->name));
1329 $group->types[] = $subtype;
1331 $modlist[$course->id][$modname] = $group;
1334 $module = new stdClass();
1335 $module->title = $modnamestr;
1336 $module->name = $modname;
1337 $module->link = new moodle_url($urlbase, array('add' => $modname));
1338 $module->icon = $OUTPUT->pix_icon('icon', '', $module->name, array('class' => 'icon'));
1339 $sm = get_string_manager();
1340 if ($sm->string_exists('modulename_help', $modname)) {
1341 $module->help = get_string('modulename_help', $modname);
1342 if ($sm->string_exists('modulename_link', $modname)) { // Link to further info in Moodle docs
1343 $link = get_string('modulename_link', $modname);
1344 $linktext = get_string('morehelp');
1345 $module->help .= html_writer::tag('div', $OUTPUT->doc_link($link, $linktext, true), array('class' => 'helpdoclink'));
1348 $module->archetype = plugin_supports('mod', $modname, FEATURE_MOD_ARCHETYPE, MOD_ARCHETYPE_OTHER);
1349 $modlist[$course->id][$modname] = $module;
1351 if (isset($modlist[$course->id][$modname])) {
1352 $return[$modname] = $modlist[$course->id][$modname];
1354 debugging("Invalid module metadata configuration for {$modname}");
1362 * Return the course category context for the category with id $categoryid, except
1363 * that if $categoryid is 0, return the system context.
1365 * @param integer $categoryid a category id or 0.
1366 * @return context the corresponding context
1368 function get_category_or_system_context($categoryid) {
1370 return context_coursecat::instance($categoryid, IGNORE_MISSING);
1372 return context_system::instance();
1377 * Returns full course categories trees to be used in html_writer::select()
1379 * Calls {@link coursecat::make_categories_list()} to build the tree and
1380 * adds whitespace to denote nesting
1382 * @return array array mapping coursecat id to the display name
1384 function make_categories_options() {
1386 require_once($CFG->libdir. '/coursecatlib.php');
1387 $cats = coursecat::make_categories_list('', 0, ' / ');
1388 foreach ($cats as $key => $value) {
1389 // Prefix the value with the number of spaces equal to category depth (number of separators in the value).
1390 $cats[$key] = str_repeat(' ', substr_count($value, ' / ')). $value;
1396 * Print the buttons relating to course requests.
1398 * @param object $context current page context.
1400 function print_course_request_buttons($context) {
1401 global $CFG, $DB, $OUTPUT;
1402 if (empty($CFG->enablecourserequests)) {
1405 if (!has_capability('moodle/course:create', $context) && has_capability('moodle/course:request', $context)) {
1406 /// Print a button to request a new course
1407 echo $OUTPUT->single_button(new moodle_url('/course/request.php'), get_string('requestcourse'), 'get');
1409 /// Print a button to manage pending requests
1410 if ($context->contextlevel == CONTEXT_SYSTEM && has_capability('moodle/site:approvecourse', $context)) {
1411 $disabled = !$DB->record_exists('course_request', array());
1412 echo $OUTPUT->single_button(new moodle_url('/course/pending.php'), get_string('coursespending'), 'get', array('disabled' => $disabled));
1417 * Does the user have permission to edit things in this category?
1419 * @param integer $categoryid The id of the category we are showing, or 0 for system context.
1420 * @return boolean has_any_capability(array(...), ...); in the appropriate context.
1422 function can_edit_in_category($categoryid = 0) {
1423 $context = get_category_or_system_context($categoryid);
1424 return has_any_capability(array('moodle/category:manage', 'moodle/course:create'), $context);
1427 /// MODULE FUNCTIONS /////////////////////////////////////////////////////////////////
1429 function add_course_module($mod) {
1432 $mod->added = time();
1435 $cmid = $DB->insert_record("course_modules", $mod);
1436 rebuild_course_cache($mod->course, true);
1441 * Creates missing course section(s) and rebuilds course cache
1443 * @param int|stdClass $courseorid course id or course object
1444 * @param int|array $sections list of relative section numbers to create
1445 * @return bool if there were any sections created
1447 function course_create_sections_if_missing($courseorid, $sections) {
1449 if (!is_array($sections)) {
1450 $sections = array($sections);
1452 $existing = array_keys(get_fast_modinfo($courseorid)->get_section_info_all());
1453 if (is_object($courseorid)) {
1454 $courseorid = $courseorid->id;
1456 $coursechanged = false;
1457 foreach ($sections as $sectionnum) {
1458 if (!in_array($sectionnum, $existing)) {
1459 $cw = new stdClass();
1460 $cw->course = $courseorid;
1461 $cw->section = $sectionnum;
1463 $cw->summaryformat = FORMAT_HTML;
1465 $id = $DB->insert_record("course_sections", $cw);
1466 $coursechanged = true;
1469 if ($coursechanged) {
1470 rebuild_course_cache($courseorid, true);
1472 return $coursechanged;
1476 * Adds an existing module to the section
1478 * Updates both tables {course_sections} and {course_modules}
1480 * Note: This function does not use modinfo PROVIDED that the section you are
1481 * adding the module to already exists. If the section does not exist, it will
1482 * build modinfo if necessary and create the section.
1484 * @param int|stdClass $courseorid course id or course object
1485 * @param int $cmid id of the module already existing in course_modules table
1486 * @param int $sectionnum relative number of the section (field course_sections.section)
1487 * If section does not exist it will be created
1488 * @param int|stdClass $beforemod id or object with field id corresponding to the module
1489 * before which the module needs to be included. Null for inserting in the
1490 * end of the section
1491 * @return int The course_sections ID where the module is inserted
1493 function course_add_cm_to_section($courseorid, $cmid, $sectionnum, $beforemod = null) {
1494 global $DB, $COURSE;
1495 if (is_object($beforemod)) {
1496 $beforemod = $beforemod->id;
1498 if (is_object($courseorid)) {
1499 $courseid = $courseorid->id;
1501 $courseid = $courseorid;
1503 // Do not try to use modinfo here, there is no guarantee it is valid!
1504 $section = $DB->get_record('course_sections',
1505 array('course' => $courseid, 'section' => $sectionnum), '*', IGNORE_MISSING);
1507 // This function call requires modinfo.
1508 course_create_sections_if_missing($courseorid, $sectionnum);
1509 $section = $DB->get_record('course_sections',
1510 array('course' => $courseid, 'section' => $sectionnum), '*', MUST_EXIST);
1513 $modarray = explode(",", trim($section->sequence));
1514 if (empty($section->sequence)) {
1515 $newsequence = "$cmid";
1516 } else if ($beforemod && ($key = array_keys($modarray, $beforemod))) {
1517 $insertarray = array($cmid, $beforemod);
1518 array_splice($modarray, $key[0], 1, $insertarray);
1519 $newsequence = implode(",", $modarray);
1521 $newsequence = "$section->sequence,$cmid";
1523 $DB->set_field("course_sections", "sequence", $newsequence, array("id" => $section->id));
1524 $DB->set_field('course_modules', 'section', $section->id, array('id' => $cmid));
1525 if (is_object($courseorid)) {
1526 rebuild_course_cache($courseorid->id, true);
1528 rebuild_course_cache($courseorid, true);
1530 return $section->id; // Return course_sections ID that was used.
1534 * Change the group mode of a course module.
1536 * Note: Do not forget to trigger the event \core\event\course_module_updated as it needs
1537 * to be triggered manually, refer to {@link \core\event\course_module_updated::create_from_cm()}.
1539 * @param int $id course module ID.
1540 * @param int $groupmode the new groupmode value.
1541 * @return bool True if the $groupmode was updated.
1543 function set_coursemodule_groupmode($id, $groupmode) {
1545 $cm = $DB->get_record('course_modules', array('id' => $id), 'id,course,groupmode', MUST_EXIST);
1546 if ($cm->groupmode != $groupmode) {
1547 $DB->set_field('course_modules', 'groupmode', $groupmode, array('id' => $cm->id));
1548 rebuild_course_cache($cm->course, true);
1550 return ($cm->groupmode != $groupmode);
1553 function set_coursemodule_idnumber($id, $idnumber) {
1555 $cm = $DB->get_record('course_modules', array('id' => $id), 'id,course,idnumber', MUST_EXIST);
1556 if ($cm->idnumber != $idnumber) {
1557 $DB->set_field('course_modules', 'idnumber', $idnumber, array('id' => $cm->id));
1558 rebuild_course_cache($cm->course, true);
1560 return ($cm->idnumber != $idnumber);
1564 * Set the visibility of a module and inherent properties.
1566 * Note: Do not forget to trigger the event \core\event\course_module_updated as it needs
1567 * to be triggered manually, refer to {@link \core\event\course_module_updated::create_from_cm()}.
1569 * From 2.4 the parameter $prevstateoverrides has been removed, the logic it triggered
1570 * has been moved to {@link set_section_visible()} which was the only place from which
1571 * the parameter was used.
1573 * @param int $id of the module
1574 * @param int $visible state of the module
1575 * @return bool false when the module was not found, true otherwise
1577 function set_coursemodule_visible($id, $visible) {
1579 require_once($CFG->libdir.'/gradelib.php');
1580 require_once($CFG->dirroot.'/calendar/lib.php');
1582 // Trigger developer's attention when using the previously removed argument.
1583 if (func_num_args() > 2) {
1584 debugging('Wrong number of arguments passed to set_coursemodule_visible(), $prevstateoverrides
1585 has been removed.', DEBUG_DEVELOPER);
1588 if (!$cm = $DB->get_record('course_modules', array('id'=>$id))) {
1592 // Create events and propagate visibility to associated grade items if the value has changed.
1593 // Only do this if it's changed to avoid accidently overwriting manual showing/hiding of student grades.
1594 if ($cm->visible == $visible) {
1598 if (!$modulename = $DB->get_field('modules', 'name', array('id'=>$cm->module))) {
1601 if ($events = $DB->get_records('event', array('instance'=>$cm->instance, 'modulename'=>$modulename))) {
1602 foreach($events as $event) {
1604 $event = new calendar_event($event);
1605 $event->toggle_visibility(true);
1607 $event = new calendar_event($event);
1608 $event->toggle_visibility(false);
1613 // Updating visible and visibleold to keep them in sync. Only changing a section visibility will
1614 // affect visibleold to allow for an original visibility restore. See set_section_visible().
1615 $cminfo = new stdClass();
1617 $cminfo->visible = $visible;
1618 $cminfo->visibleold = $visible;
1619 $DB->update_record('course_modules', $cminfo);
1621 // Hide the associated grade items so the teacher doesn't also have to go to the gradebook and hide them there.
1622 // Note that this must be done after updating the row in course_modules, in case
1623 // the modules grade_item_update function needs to access $cm->visible.
1624 if (plugin_supports('mod', $modulename, FEATURE_CONTROLS_GRADE_VISIBILITY) &&
1625 component_callback_exists('mod_' . $modulename, 'grade_item_update')) {
1626 $instance = $DB->get_record($modulename, array('id' => $cm->instance), '*', MUST_EXIST);
1627 component_callback('mod_' . $modulename, 'grade_item_update', array($instance));
1629 $grade_items = grade_item::fetch_all(array('itemtype'=>'mod', 'itemmodule'=>$modulename, 'iteminstance'=>$cm->instance, 'courseid'=>$cm->course));
1631 foreach ($grade_items as $grade_item) {
1632 $grade_item->set_hidden(!$visible);
1637 rebuild_course_cache($cm->course, true);
1642 * This function will handles the whole deletion process of a module. This includes calling
1643 * the modules delete_instance function, deleting files, events, grades, conditional data,
1644 * the data in the course_module and course_sections table and adding a module deletion
1647 * @param int $cmid the course module id
1650 function course_delete_module($cmid) {
1653 require_once($CFG->libdir.'/gradelib.php');
1654 require_once($CFG->dirroot.'/blog/lib.php');
1655 require_once($CFG->dirroot.'/calendar/lib.php');
1656 require_once($CFG->dirroot . '/tag/lib.php');
1658 // Get the course module.
1659 if (!$cm = $DB->get_record('course_modules', array('id' => $cmid))) {
1663 // Get the module context.
1664 $modcontext = context_module::instance($cm->id);
1666 // Get the course module name.
1667 $modulename = $DB->get_field('modules', 'name', array('id' => $cm->module), MUST_EXIST);
1669 // Get the file location of the delete_instance function for this module.
1670 $modlib = "$CFG->dirroot/mod/$modulename/lib.php";
1672 // Include the file required to call the delete_instance function for this module.
1673 if (file_exists($modlib)) {
1674 require_once($modlib);
1676 throw new moodle_exception('cannotdeletemodulemissinglib', '', '', null,
1677 "Cannot delete this module as the file mod/$modulename/lib.php is missing.");
1680 $deleteinstancefunction = $modulename . '_delete_instance';
1682 // Ensure the delete_instance function exists for this module.
1683 if (!function_exists($deleteinstancefunction)) {
1684 throw new moodle_exception('cannotdeletemodulemissingfunc', '', '', null,
1685 "Cannot delete this module as the function {$modulename}_delete_instance is missing in mod/$modulename/lib.php.");
1688 // Call the delete_instance function, if it returns false throw an exception.
1689 if (!$deleteinstancefunction($cm->instance)) {
1690 throw new moodle_exception('cannotdeletemoduleinstance', '', '', null,
1691 "Cannot delete the module $modulename (instance).");
1694 // Remove all module files in case modules forget to do that.
1695 $fs = get_file_storage();
1696 $fs->delete_area_files($modcontext->id);
1698 // Delete events from calendar.
1699 if ($events = $DB->get_records('event', array('instance' => $cm->instance, 'modulename' => $modulename))) {
1700 foreach($events as $event) {
1701 $calendarevent = calendar_event::load($event->id);
1702 $calendarevent->delete();
1706 // Delete grade items, outcome items and grades attached to modules.
1707 if ($grade_items = grade_item::fetch_all(array('itemtype' => 'mod', 'itemmodule' => $modulename,
1708 'iteminstance' => $cm->instance, 'courseid' => $cm->course))) {
1709 foreach ($grade_items as $grade_item) {
1710 $grade_item->delete('moddelete');
1714 // Delete completion and availability data; it is better to do this even if the
1715 // features are not turned on, in case they were turned on previously (these will be
1716 // very quick on an empty table).
1717 $DB->delete_records('course_modules_completion', array('coursemoduleid' => $cm->id));
1718 $DB->delete_records('course_completion_criteria', array('moduleinstance' => $cm->id,
1719 'criteriatype' => COMPLETION_CRITERIA_TYPE_ACTIVITY));
1721 // Delete all tag instances associated with the instance of this module.
1722 tag_delete_instances('mod_' . $modulename, $modcontext->id);
1724 // Delete the context.
1725 context_helper::delete_instance(CONTEXT_MODULE, $cm->id);
1727 // Delete the module from the course_modules table.
1728 $DB->delete_records('course_modules', array('id' => $cm->id));
1730 // Delete module from that section.
1731 if (!delete_mod_from_section($cm->id, $cm->section)) {
1732 throw new moodle_exception('cannotdeletemodulefromsection', '', '', null,
1733 "Cannot delete the module $modulename (instance) from section.");
1736 // Trigger event for course module delete action.
1737 $event = \core\event\course_module_deleted::create(array(
1738 'courseid' => $cm->course,
1739 'context' => $modcontext,
1740 'objectid' => $cm->id,
1742 'modulename' => $modulename,
1743 'instanceid' => $cm->instance,
1746 $event->add_record_snapshot('course_modules', $cm);
1748 rebuild_course_cache($cm->course, true);
1751 function delete_mod_from_section($modid, $sectionid) {
1754 if ($section = $DB->get_record("course_sections", array("id"=>$sectionid)) ) {
1756 $modarray = explode(",", $section->sequence);
1758 if ($key = array_keys ($modarray, $modid)) {
1759 array_splice($modarray, $key[0], 1);
1760 $newsequence = implode(",", $modarray);
1761 $DB->set_field("course_sections", "sequence", $newsequence, array("id"=>$section->id));
1762 rebuild_course_cache($section->course, true);
1773 * Moves a section within a course, from a position to another.
1774 * Be very careful: $section and $destination refer to section number,
1777 * @param object $course
1778 * @param int $section Section number (not id!!!)
1779 * @param int $destination
1780 * @return boolean Result
1782 function move_section_to($course, $section, $destination) {
1783 /// Moves a whole course section up and down within the course
1786 if (!$destination && $destination != 0) {
1790 // compartibility with course formats using field 'numsections'
1791 $courseformatoptions = course_get_format($course)->get_format_options();
1792 if ((array_key_exists('numsections', $courseformatoptions) &&
1793 ($destination > $courseformatoptions['numsections'])) || ($destination < 1)) {
1797 // Get all sections for this course and re-order them (2 of them should now share the same section number)
1798 if (!$sections = $DB->get_records_menu('course_sections', array('course' => $course->id),
1799 'section ASC, id ASC', 'id, section')) {
1803 $movedsections = reorder_sections($sections, $section, $destination);
1805 // Update all sections. Do this in 2 steps to avoid breaking database
1806 // uniqueness constraint
1807 $transaction = $DB->start_delegated_transaction();
1808 foreach ($movedsections as $id => $position) {
1809 if ($sections[$id] !== $position) {
1810 $DB->set_field('course_sections', 'section', -$position, array('id' => $id));
1813 foreach ($movedsections as $id => $position) {
1814 if ($sections[$id] !== $position) {
1815 $DB->set_field('course_sections', 'section', $position, array('id' => $id));
1819 // If we move the highlighted section itself, then just highlight the destination.
1820 // Adjust the higlighted section location if we move something over it either direction.
1821 if ($section == $course->marker) {
1822 course_set_marker($course->id, $destination);
1823 } elseif ($section > $course->marker && $course->marker >= $destination) {
1824 course_set_marker($course->id, $course->marker+1);
1825 } elseif ($section < $course->marker && $course->marker <= $destination) {
1826 course_set_marker($course->id, $course->marker-1);
1829 $transaction->allow_commit();
1830 rebuild_course_cache($course->id, true);
1835 * Reordering algorithm for course sections. Given an array of section->section indexed by section->id,
1836 * an original position number and a target position number, rebuilds the array so that the
1837 * move is made without any duplication of section positions.
1838 * Note: The target_position is the position AFTER WHICH the moved section will be inserted. If you want to
1839 * insert a section before the first one, you must give 0 as the target (section 0 can never be moved).
1841 * @param array $sections
1842 * @param int $origin_position
1843 * @param int $target_position
1846 function reorder_sections($sections, $origin_position, $target_position) {
1847 if (!is_array($sections)) {
1851 // We can't move section position 0
1852 if ($origin_position < 1) {
1853 echo "We can't move section position 0";
1857 // Locate origin section in sections array
1858 if (!$origin_key = array_search($origin_position, $sections)) {
1859 echo "searched position not in sections array";
1860 return false; // searched position not in sections array
1863 // Extract origin section
1864 $origin_section = $sections[$origin_key];
1865 unset($sections[$origin_key]);
1867 // Find offset of target position (stupid PHP's array_splice requires offset instead of key index!)
1869 $append_array = array();
1870 foreach ($sections as $id => $position) {
1872 $append_array[$id] = $position;
1873 unset($sections[$id]);
1875 if ($position == $target_position) {
1876 if ($target_position < $origin_position) {
1877 $append_array[$id] = $position;
1878 unset($sections[$id]);
1884 // Append moved section
1885 $sections[$origin_key] = $origin_section;
1887 // Append rest of array (if applicable)
1888 if (!empty($append_array)) {
1889 foreach ($append_array as $id => $position) {
1890 $sections[$id] = $position;
1894 // Renumber positions
1896 foreach ($sections as $id => $p) {
1897 $sections[$id] = $position;
1906 * Move the module object $mod to the specified $section
1907 * If $beforemod exists then that is the module
1908 * before which $modid should be inserted
1910 * @param stdClass|cm_info $mod
1911 * @param stdClass|section_info $section
1912 * @param int|stdClass $beforemod id or object with field id corresponding to the module
1913 * before which the module needs to be included. Null for inserting in the
1914 * end of the section
1915 * @return int new value for module visibility (0 or 1)
1917 function moveto_module($mod, $section, $beforemod=NULL) {
1918 global $OUTPUT, $DB;
1920 // Current module visibility state - return value of this function.
1921 $modvisible = $mod->visible;
1923 // Remove original module from original section.
1924 if (! delete_mod_from_section($mod->id, $mod->section)) {
1925 echo $OUTPUT->notification("Could not delete module from existing section");
1928 // If moving to a hidden section then hide module.
1929 if ($mod->section != $section->id) {
1930 if (!$section->visible && $mod->visible) {
1931 // Module was visible but must become hidden after moving to hidden section.
1933 set_coursemodule_visible($mod->id, 0);
1934 // Set visibleold to 1 so module will be visible when section is made visible.
1935 $DB->set_field('course_modules', 'visibleold', 1, array('id' => $mod->id));
1937 if ($section->visible && !$mod->visible) {
1938 // Hidden module was moved to the visible section, restore the module visibility from visibleold.
1939 set_coursemodule_visible($mod->id, $mod->visibleold);
1940 $modvisible = $mod->visibleold;
1944 // Add the module into the new section.
1945 course_add_cm_to_section($section->course, $mod->id, $section->section, $beforemod);
1950 * Returns the list of all editing actions that current user can perform on the module
1952 * @param cm_info $mod The module to produce editing buttons for
1953 * @param int $indent The current indenting (default -1 means no move left-right actions)
1954 * @param int $sr The section to link back to (used for creating the links)
1955 * @return array array of action_link or pix_icon objects
1957 function course_get_cm_edit_actions(cm_info $mod, $indent = -1, $sr = null) {
1958 global $COURSE, $SITE;
1962 $coursecontext = context_course::instance($mod->course);
1963 $modcontext = context_module::instance($mod->id);
1965 $editcaps = array('moodle/course:manageactivities', 'moodle/course:activityvisibility', 'moodle/role:assign');
1966 $dupecaps = array('moodle/backup:backuptargetimport', 'moodle/restore:restoretargetimport');
1968 // No permission to edit anything.
1969 if (!has_any_capability($editcaps, $modcontext) and !has_all_capabilities($dupecaps, $coursecontext)) {
1973 $hasmanageactivities = has_capability('moodle/course:manageactivities', $modcontext);
1976 $str = get_strings(array('delete', 'move', 'moveright', 'moveleft',
1977 'editsettings', 'duplicate', 'hide', 'show'), 'moodle');
1978 $str->assign = get_string('assignroles', 'role');
1979 $str->groupsnone = get_string('clicktochangeinbrackets', 'moodle', get_string("groupsnone"));
1980 $str->groupsseparate = get_string('clicktochangeinbrackets', 'moodle', get_string("groupsseparate"));
1981 $str->groupsvisible = get_string('clicktochangeinbrackets', 'moodle', get_string("groupsvisible"));
1984 $baseurl = new moodle_url('/course/mod.php', array('sesskey' => sesskey()));
1987 $baseurl->param('sr', $sr);
1992 if ($hasmanageactivities) {
1993 $actions['update'] = new action_menu_link_secondary(
1994 new moodle_url($baseurl, array('update' => $mod->id)),
1995 new pix_icon('t/edit', $str->editsettings, 'moodle', array('class' => 'iconsmall', 'title' => '')),
1997 array('class' => 'editing_update', 'data-action' => 'update')
2002 if ($hasmanageactivities && $indent >= 0) {
2003 $indentlimits = new stdClass();
2004 $indentlimits->min = 0;
2005 $indentlimits->max = 16;
2006 if (right_to_left()) { // Exchange arrows on RTL
2007 $rightarrow = 't/left';
2008 $leftarrow = 't/right';
2010 $rightarrow = 't/right';
2011 $leftarrow = 't/left';
2014 if ($indent >= $indentlimits->max) {
2015 $enabledclass = 'hidden';
2019 $actions['moveright'] = new action_menu_link_secondary(
2020 new moodle_url($baseurl, array('id' => $mod->id, 'indent' => '1')),
2021 new pix_icon($rightarrow, $str->moveright, 'moodle', array('class' => 'iconsmall', 'title' => '')),
2023 array('class' => 'editing_moveright ' . $enabledclass, 'data-action' => 'moveright', 'data-keepopen' => true)
2026 if ($indent <= $indentlimits->min) {
2027 $enabledclass = 'hidden';
2031 $actions['moveleft'] = new action_menu_link_secondary(
2032 new moodle_url($baseurl, array('id' => $mod->id, 'indent' => '-1')),
2033 new pix_icon($leftarrow, $str->moveleft, 'moodle', array('class' => 'iconsmall', 'title' => '')),
2035 array('class' => 'editing_moveleft ' . $enabledclass, 'data-action' => 'moveleft', 'data-keepopen' => true)
2041 if (has_capability('moodle/course:activityvisibility', $modcontext)) {
2042 if ($mod->visible) {
2043 $actions['hide'] = new action_menu_link_secondary(
2044 new moodle_url($baseurl, array('hide' => $mod->id)),
2045 new pix_icon('t/hide', $str->hide, 'moodle', array('class' => 'iconsmall', 'title' => '')),
2047 array('class' => 'editing_hide', 'data-action' => 'hide')
2050 $actions['show'] = new action_menu_link_secondary(
2051 new moodle_url($baseurl, array('show' => $mod->id)),
2052 new pix_icon('t/show', $str->show, 'moodle', array('class' => 'iconsmall', 'title' => '')),
2054 array('class' => 'editing_show', 'data-action' => 'show')
2059 // Duplicate (require both target import caps to be able to duplicate and backup2 support, see modduplicate.php)
2060 // Note that restoring on front page is never allowed.
2061 if ($mod->course != SITEID && has_all_capabilities($dupecaps, $coursecontext) &&
2062 plugin_supports('mod', $mod->modname, FEATURE_BACKUP_MOODLE2)) {
2063 $actions['duplicate'] = new action_menu_link_secondary(
2064 new moodle_url($baseurl, array('duplicate' => $mod->id)),
2065 new pix_icon('t/copy', $str->duplicate, 'moodle', array('class' => 'iconsmall', 'title' => '')),
2067 array('class' => 'editing_duplicate', 'data-action' => 'duplicate', 'data-sr' => $sr)
2072 if ($hasmanageactivities && !$mod->coursegroupmodeforce) {
2073 if (plugin_supports('mod', $mod->modname, FEATURE_GROUPS, 0)) {
2074 if ($mod->effectivegroupmode == SEPARATEGROUPS) {
2075 $nextgroupmode = VISIBLEGROUPS;
2076 $grouptitle = $str->groupsseparate;
2077 $actionname = 'groupsseparate';
2078 $groupimage = 'i/groups';
2079 } else if ($mod->effectivegroupmode == VISIBLEGROUPS) {
2080 $nextgroupmode = NOGROUPS;
2081 $grouptitle = $str->groupsvisible;
2082 $actionname = 'groupsvisible';
2083 $groupimage = 'i/groupv';
2085 $nextgroupmode = SEPARATEGROUPS;
2086 $grouptitle = $str->groupsnone;
2087 $actionname = 'groupsnone';
2088 $groupimage = 'i/groupn';
2091 $actions[$actionname] = new action_menu_link_primary(
2092 new moodle_url($baseurl, array('id' => $mod->id, 'groupmode' => $nextgroupmode)),
2093 new pix_icon($groupimage, null, 'moodle', array('class' => 'iconsmall')),
2095 array('class' => 'editing_'. $actionname, 'data-action' => $actionname, 'data-nextgroupmode' => $nextgroupmode, 'aria-live' => 'assertive')
2098 $actions['nogroupsupport'] = new action_menu_filler();
2103 if (has_capability('moodle/role:assign', $modcontext)){
2104 $actions['assign'] = new action_menu_link_secondary(
2105 new moodle_url('/admin/roles/assign.php', array('contextid' => $modcontext->id)),
2106 new pix_icon('t/assignroles', $str->assign, 'moodle', array('class' => 'iconsmall', 'title' => '')),
2108 array('class' => 'editing_assign', 'data-action' => 'assignroles')
2113 if ($hasmanageactivities) {
2114 $actions['delete'] = new action_menu_link_secondary(
2115 new moodle_url($baseurl, array('delete' => $mod->id)),
2116 new pix_icon('t/delete', $str->delete, 'moodle', array('class' => 'iconsmall', 'title' => '')),
2118 array('class' => 'editing_delete', 'data-action' => 'delete')
2126 * Returns the rename action.
2128 * @param cm_info $mod The module to produce editing buttons for
2129 * @param int $sr The section to link back to (used for creating the links)
2130 * @return The markup for the rename action, or an empty string if not available.
2132 function course_get_cm_rename_action(cm_info $mod, $sr = null) {
2133 global $COURSE, $OUTPUT;
2138 $modcontext = context_module::instance($mod->id);
2139 $hasmanageactivities = has_capability('moodle/course:manageactivities', $modcontext);
2142 $str = get_strings(array('edittitle'));
2145 if (!isset($baseurl)) {
2146 $baseurl = new moodle_url('/course/mod.php', array('sesskey' => sesskey()));
2150 $baseurl->param('sr', $sr);
2154 if ($mod->has_view() && $hasmanageactivities && course_ajax_enabled($COURSE) &&
2155 (($mod->course == $COURSE->id) || ($mod->course == SITEID))) {
2156 // we will not display link if we are on some other-course page (where we should not see this module anyway)
2157 return html_writer::span(
2159 new moodle_url($baseurl, array('update' => $mod->id)),
2160 $OUTPUT->pix_icon('t/editstring', '', 'moodle', array('class' => 'iconsmall visibleifjs', 'title' => '')),
2162 'class' => 'editing_title',
2163 'data-action' => 'edittitle',
2164 'title' => $str->edittitle,
2173 * Returns the move action.
2175 * @param cm_info $mod The module to produce a move button for
2176 * @param int $sr The section to link back to (used for creating the links)
2177 * @return The markup for the move action, or an empty string if not available.
2179 function course_get_cm_move(cm_info $mod, $sr = null) {
2185 $modcontext = context_module::instance($mod->id);
2186 $hasmanageactivities = has_capability('moodle/course:manageactivities', $modcontext);
2189 $str = get_strings(array('move'));
2192 if (!isset($baseurl)) {
2193 $baseurl = new moodle_url('/course/mod.php', array('sesskey' => sesskey()));
2196 $baseurl->param('sr', $sr);
2200 if ($hasmanageactivities) {
2201 $pixicon = 'i/dragdrop';
2203 if (!course_ajax_enabled($mod->get_course())) {
2204 // Override for course frontpage until we get drag/drop working there.
2205 $pixicon = 't/move';
2208 return html_writer::link(
2209 new moodle_url($baseurl, array('copy' => $mod->id)),
2210 $OUTPUT->pix_icon($pixicon, $str->move, 'moodle', array('class' => 'iconsmall', 'title' => '')),
2211 array('class' => 'editing_move', 'data-action' => 'move')
2218 * given a course object with shortname & fullname, this function will
2219 * truncate the the number of chars allowed and add ... if it was too long
2221 function course_format_name ($course,$max=100) {
2223 $context = context_course::instance($course->id);
2224 $shortname = format_string($course->shortname, true, array('context' => $context));
2225 $fullname = format_string($course->fullname, true, array('context' => context_course::instance($course->id)));
2226 $str = $shortname.': '. $fullname;
2227 if (core_text::strlen($str) <= $max) {
2231 return core_text::substr($str,0,$max-3).'...';
2236 * Is the user allowed to add this type of module to this course?
2237 * @param object $course the course settings. Only $course->id is used.
2238 * @param string $modname the module name. E.g. 'forum' or 'quiz'.
2239 * @return bool whether the current user is allowed to add this type of module to this course.
2241 function course_allowed_module($course, $modname) {
2242 if (is_numeric($modname)) {
2243 throw new coding_exception('Function course_allowed_module no longer
2244 supports numeric module ids. Please update your code to pass the module name.');
2247 $capability = 'mod/' . $modname . ':addinstance';
2248 if (!get_capability_info($capability)) {
2249 // Debug warning that the capability does not exist, but no more than once per page.
2250 static $warned = array();
2251 $archetype = plugin_supports('mod', $modname, FEATURE_MOD_ARCHETYPE, MOD_ARCHETYPE_OTHER);
2252 if (!isset($warned[$modname]) && $archetype !== MOD_ARCHETYPE_SYSTEM) {
2253 debugging('The module ' . $modname . ' does not define the standard capability ' .
2254 $capability , DEBUG_DEVELOPER);
2255 $warned[$modname] = 1;
2258 // If the capability does not exist, the module can always be added.
2262 $coursecontext = context_course::instance($course->id);
2263 return has_capability($capability, $coursecontext);
2267 * Efficiently moves many courses around while maintaining
2268 * sortorder in order.
2270 * @param array $courseids is an array of course ids
2271 * @param int $categoryid
2272 * @return bool success
2274 function move_courses($courseids, $categoryid) {
2277 if (empty($courseids)) {
2282 if (!$category = $DB->get_record('course_categories', array('id' => $categoryid))) {
2286 $courseids = array_reverse($courseids);
2287 $newparent = context_coursecat::instance($category->id);
2290 list($where, $params) = $DB->get_in_or_equal($courseids);
2291 $dbcourses = $DB->get_records_select('course', 'id ' . $where, $params, '', 'id, category, shortname, fullname');
2292 foreach ($dbcourses as $dbcourse) {
2293 $course = new stdClass();
2294 $course->id = $dbcourse->id;
2295 $course->category = $category->id;
2296 $course->sortorder = $category->sortorder + MAX_COURSES_IN_CATEGORY - $i++;
2297 if ($category->visible == 0) {
2298 // Hide the course when moving into hidden category, do not update the visibleold flag - we want to get
2299 // to previous state if somebody unhides the category.
2300 $course->visible = 0;
2303 $DB->update_record('course', $course);
2305 // Update context, so it can be passed to event.
2306 $context = context_course::instance($course->id);
2307 $context->update_moved($newparent);
2309 // Trigger a course updated event.
2310 $event = \core\event\course_updated::create(array(
2311 'objectid' => $course->id,
2312 'context' => context_course::instance($course->id),
2313 'other' => array('shortname' => $dbcourse->shortname,
2314 'fullname' => $dbcourse->fullname)
2316 $event->set_legacy_logdata(array($course->id, 'course', 'move', 'edit.php?id=' . $course->id, $course->id));
2319 fix_course_sortorder();
2320 cache_helper::purge_by_event('changesincourse');
2326 * Returns the display name of the given section that the course prefers
2328 * Implementation of this function is provided by course format
2329 * @see format_base::get_section_name()
2331 * @param int|stdClass $courseorid The course to get the section name for (object or just course id)
2332 * @param int|stdClass $section Section object from database or just field course_sections.section
2333 * @return string Display name that the course format prefers, e.g. "Week 2"
2335 function get_section_name($courseorid, $section) {
2336 return course_get_format($courseorid)->get_section_name($section);
2340 * Tells if current course format uses sections
2342 * @param string $format Course format ID e.g. 'weeks' $course->format
2345 function course_format_uses_sections($format) {
2346 $course = new stdClass();
2347 $course->format = $format;
2348 return course_get_format($course)->uses_sections();
2352 * Returns the information about the ajax support in the given source format
2354 * The returned object's property (boolean)capable indicates that
2355 * the course format supports Moodle course ajax features.
2357 * @param string $format
2360 function course_format_ajax_support($format) {
2361 $course = new stdClass();
2362 $course->format = $format;
2363 return course_get_format($course)->supports_ajax();
2367 * Can the current user delete this course?
2368 * Course creators have exception,
2369 * 1 day after the creation they can sill delete the course.
2370 * @param int $courseid
2373 function can_delete_course($courseid) {
2376 $context = context_course::instance($courseid);
2378 if (has_capability('moodle/course:delete', $context)) {
2382 // hack: now try to find out if creator created this course recently (1 day)
2383 if (!has_capability('moodle/course:create', $context)) {
2387 $since = time() - 60*60*24;
2388 $course = get_course($courseid);
2390 if ($course->timecreated < $since) {
2391 return false; // Return if the course was not created in last 24 hours.
2394 $logmanger = get_log_manager();
2395 $readers = $logmanger->get_readers('\core\log\sql_select_reader');
2396 $reader = reset($readers);
2398 if (empty($reader)) {
2399 return false; // No log reader found.
2403 $select = "userid = :userid AND courseid = :courseid AND eventname = :eventname AND timecreated > :since";
2404 $params = array('userid' => $USER->id, 'since' => $since, 'courseid' => $course->id, 'eventname' => '\core\event\course_created');
2406 return (bool)$reader->get_events_select_count($select, $params);
2410 * Save the Your name for 'Some role' strings.
2412 * @param integer $courseid the id of this course.
2413 * @param array $data the data that came from the course settings form.
2415 function save_local_role_names($courseid, $data) {
2417 $context = context_course::instance($courseid);
2419 foreach ($data as $fieldname => $value) {
2420 if (strpos($fieldname, 'role_') !== 0) {
2423 list($ignored, $roleid) = explode('_', $fieldname);
2425 // make up our mind whether we want to delete, update or insert
2427 $DB->delete_records('role_names', array('contextid' => $context->id, 'roleid' => $roleid));
2429 } else if ($rolename = $DB->get_record('role_names', array('contextid' => $context->id, 'roleid' => $roleid))) {
2430 $rolename->name = $value;
2431 $DB->update_record('role_names', $rolename);
2434 $rolename = new stdClass;
2435 $rolename->contextid = $context->id;
2436 $rolename->roleid = $roleid;
2437 $rolename->name = $value;
2438 $DB->insert_record('role_names', $rolename);
2444 * Returns options to use in course overviewfiles filemanager
2446 * @param null|stdClass|course_in_list|int $course either object that has 'id' property or just the course id;
2447 * may be empty if course does not exist yet (course create form)
2448 * @return array|null array of options such as maxfiles, maxbytes, accepted_types, etc.
2449 * or null if overviewfiles are disabled
2451 function course_overviewfiles_options($course) {
2453 if (empty($CFG->courseoverviewfileslimit)) {
2456 $accepted_types = preg_split('/\s*,\s*/', trim($CFG->courseoverviewfilesext), -1, PREG_SPLIT_NO_EMPTY);
2457 if (in_array('*', $accepted_types) || empty($accepted_types)) {
2458 $accepted_types = '*';
2460 // Since config for $CFG->courseoverviewfilesext is a text box, human factor must be considered.
2461 // Make sure extensions are prefixed with dot unless they are valid typegroups
2462 foreach ($accepted_types as $i => $type) {
2463 if (substr($type, 0, 1) !== '.') {
2464 require_once($CFG->libdir. '/filelib.php');
2465 if (!count(file_get_typegroup('extension', $type))) {
2466 // It does not start with dot and is not a valid typegroup, this is most likely extension.
2467 $accepted_types[$i] = '.'. $type;
2472 if (!empty($corrected)) {
2473 set_config('courseoverviewfilesext', join(',', $accepted_types));
2477 'maxfiles' => $CFG->courseoverviewfileslimit,
2478 'maxbytes' => $CFG->maxbytes,
2480 'accepted_types' => $accepted_types
2482 if (!empty($course->id)) {
2483 $options['context'] = context_course::instance($course->id);
2484 } else if (is_int($course) && $course > 0) {
2485 $options['context'] = context_course::instance($course);
2491 * Create a course and either return a $course object
2493 * Please note this functions does not verify any access control,
2494 * the calling code is responsible for all validation (usually it is the form definition).
2496 * @param array $editoroptions course description editor options
2497 * @param object $data - all the data needed for an entry in the 'course' table
2498 * @return object new course instance
2500 function create_course($data, $editoroptions = NULL) {
2503 //check the categoryid - must be given for all new courses
2504 $category = $DB->get_record('course_categories', array('id'=>$data->category), '*', MUST_EXIST);
2506 // Check if the shortname already exists.
2507 if (!empty($data->shortname)) {
2508 if ($DB->record_exists('course', array('shortname' => $data->shortname))) {
2509 throw new moodle_exception('shortnametaken', '', '', $data->shortname);
2513 // Check if the idnumber already exists.
2514 if (!empty($data->idnumber)) {
2515 if ($DB->record_exists('course', array('idnumber' => $data->idnumber))) {
2516 throw new moodle_exception('courseidnumbertaken', '', '', $data->idnumber);
2520 $data->timecreated = time();
2521 $data->timemodified = $data->timecreated;
2523 // place at beginning of any category
2524 $data->sortorder = 0;
2526 if ($editoroptions) {
2527 // summary text is updated later, we need context to store the files first
2528 $data->summary = '';
2529 $data->summary_format = FORMAT_HTML;
2532 if (!isset($data->visible)) {
2533 // data not from form, add missing visibility info
2534 $data->visible = $category->visible;
2536 $data->visibleold = $data->visible;
2538 $newcourseid = $DB->insert_record('course', $data);
2539 $context = context_course::instance($newcourseid, MUST_EXIST);
2541 if ($editoroptions) {
2542 // Save the files used in the summary editor and store
2543 $data = file_postupdate_standard_editor($data, 'summary', $editoroptions, $context, 'course', 'summary', 0);
2544 $DB->set_field('course', 'summary', $data->summary, array('id'=>$newcourseid));
2545 $DB->set_field('course', 'summaryformat', $data->summary_format, array('id'=>$newcourseid));
2547 if ($overviewfilesoptions = course_overviewfiles_options($newcourseid)) {
2548 // Save the course overviewfiles
2549 $data = file_postupdate_standard_filemanager($data, 'overviewfiles', $overviewfilesoptions, $context, 'course', 'overviewfiles', 0);
2552 // update course format options
2553 course_get_format($newcourseid)->update_course_format_options($data);
2555 $course = course_get_format($newcourseid)->get_course();
2558 blocks_add_default_course_blocks($course);
2560 // Create a default section.
2561 course_create_sections_if_missing($course, 0);
2563 fix_course_sortorder();
2564 // purge appropriate caches in case fix_course_sortorder() did not change anything
2565 cache_helper::purge_by_event('changesincourse');
2567 // new context created - better mark it as dirty
2568 $context->mark_dirty();
2570 // Save any custom role names.
2571 save_local_role_names($course->id, (array)$data);
2573 // set up enrolments
2574 enrol_course_updated(true, $course, $data);
2576 // Trigger a course created event.
2577 $event = \core\event\course_created::create(array(
2578 'objectid' => $course->id,
2579 'context' => context_course::instance($course->id),
2580 'other' => array('shortname' => $course->shortname,
2581 'fullname' => $course->fullname)
2591 * Please note this functions does not verify any access control,
2592 * the calling code is responsible for all validation (usually it is the form definition).
2594 * @param object $data - all the data needed for an entry in the 'course' table
2595 * @param array $editoroptions course description editor options
2598 function update_course($data, $editoroptions = NULL) {
2601 $data->timemodified = time();
2603 $oldcourse = course_get_format($data->id)->get_course();
2604 $context = context_course::instance($oldcourse->id);
2606 if ($editoroptions) {
2607 $data = file_postupdate_standard_editor($data, 'summary', $editoroptions, $context, 'course', 'summary', 0);
2609 if ($overviewfilesoptions = course_overviewfiles_options($data->id)) {
2610 $data = file_postupdate_standard_filemanager($data, 'overviewfiles', $overviewfilesoptions, $context, 'course', 'overviewfiles', 0);
2613 // Check we don't have a duplicate shortname.
2614 if (!empty($data->shortname) && $oldcourse->shortname != $data->shortname) {
2615 if ($DB->record_exists_sql('SELECT id from {course} WHERE shortname = ? AND id <> ?', array($data->shortname, $data->id))) {
2616 throw new moodle_exception('shortnametaken', '', '', $data->shortname);
2620 // Check we don't have a duplicate idnumber.
2621 if (!empty($data->idnumber) && $oldcourse->idnumber != $data->idnumber) {
2622 if ($DB->record_exists_sql('SELECT id from {course} WHERE idnumber = ? AND id <> ?', array($data->idnumber, $data->id))) {
2623 throw new moodle_exception('courseidnumbertaken', '', '', $data->idnumber);
2627 if (!isset($data->category) or empty($data->category)) {
2628 // prevent nulls and 0 in category field
2629 unset($data->category);
2631 $changesincoursecat = $movecat = (isset($data->category) and $oldcourse->category != $data->category);
2633 if (!isset($data->visible)) {
2634 // data not from form, add missing visibility info
2635 $data->visible = $oldcourse->visible;
2638 if ($data->visible != $oldcourse->visible) {
2639 // reset the visibleold flag when manually hiding/unhiding course
2640 $data->visibleold = $data->visible;
2641 $changesincoursecat = true;
2644 $newcategory = $DB->get_record('course_categories', array('id'=>$data->category));
2645 if (empty($newcategory->visible)) {
2646 // make sure when moving into hidden category the course is hidden automatically
2652 // Update with the new data
2653 $DB->update_record('course', $data);
2654 // make sure the modinfo cache is reset
2655 rebuild_course_cache($data->id);
2657 // update course format options with full course data
2658 course_get_format($data->id)->update_course_format_options($data, $oldcourse);
2660 $course = $DB->get_record('course', array('id'=>$data->id));
2663 $newparent = context_coursecat::instance($course->category);
2664 $context->update_moved($newparent);
2666 $fixcoursesortorder = $movecat || (isset($data->sortorder) && ($oldcourse->sortorder != $data->sortorder));
2667 if ($fixcoursesortorder) {
2668 fix_course_sortorder();
2671 // purge appropriate caches in case fix_course_sortorder() did not change anything
2672 cache_helper::purge_by_event('changesincourse');
2673 if ($changesincoursecat) {
2674 cache_helper::purge_by_event('changesincoursecat');
2677 // Test for and remove blocks which aren't appropriate anymore
2678 blocks_remove_inappropriate($course);
2680 // Save any custom role names.
2681 save_local_role_names($course->id, $data);
2683 // update enrol settings
2684 enrol_course_updated(false, $course, $data);
2686 // Trigger a course updated event.
2687 $event = \core\event\course_updated::create(array(
2688 'objectid' => $course->id,
2689 'context' => context_course::instance($course->id),
2690 'other' => array('shortname' => $course->shortname,
2691 'fullname' => $course->fullname)
2694 $event->set_legacy_logdata(array($course->id, 'course', 'update', 'edit.php?id=' . $course->id, $course->id));
2697 if ($oldcourse->format !== $course->format) {
2698 // Remove all options stored for the previous format
2699 // We assume that new course format migrated everything it needed watching trigger
2700 // 'course_updated' and in method format_XXX::update_course_format_options()
2701 $DB->delete_records('course_format_options',
2702 array('courseid' => $course->id, 'format' => $oldcourse->format));
2707 * Average number of participants
2710 function average_number_of_participants() {
2713 //count total of enrolments for visible course (except front page)
2714 $sql = 'SELECT COUNT(*) FROM (
2715 SELECT DISTINCT ue.userid, e.courseid
2716 FROM {user_enrolments} ue, {enrol} e, {course} c
2717 WHERE ue.enrolid = e.id
2718 AND e.courseid <> :siteid
2719 AND c.id = e.courseid
2720 AND c.visible = 1) total';
2721 $params = array('siteid' => $SITE->id);
2722 $enrolmenttotal = $DB->count_records_sql($sql, $params);
2725 //count total of visible courses (minus front page)
2726 $coursetotal = $DB->count_records('course', array('visible' => 1));
2727 $coursetotal = $coursetotal - 1 ;
2729 //average of enrolment
2730 if (empty($coursetotal)) {
2731 $participantaverage = 0;
2733 $participantaverage = $enrolmenttotal / $coursetotal;
2736 return $participantaverage;
2740 * Average number of course modules
2743 function average_number_of_courses_modules() {
2746 //count total of visible course module (except front page)
2747 $sql = 'SELECT COUNT(*) FROM (
2748 SELECT cm.course, cm.module
2749 FROM {course} c, {course_modules} cm
2750 WHERE c.id = cm.course
2753 AND c.visible = 1) total';
2754 $params = array('siteid' => $SITE->id);
2755 $moduletotal = $DB->count_records_sql($sql, $params);
2758 //count total of visible courses (minus front page)
2759 $coursetotal = $DB->count_records('course', array('visible' => 1));
2760 $coursetotal = $coursetotal - 1 ;
2762 //average of course module
2763 if (empty($coursetotal)) {
2764 $coursemoduleaverage = 0;
2766 $coursemoduleaverage = $moduletotal / $coursetotal;
2769 return $coursemoduleaverage;
2773 * This class pertains to course requests and contains methods associated with
2774 * create, approving, and removing course requests.
2776 * Please note we do not allow embedded images here because there is no context
2777 * to store them with proper access control.
2779 * @copyright 2009 Sam Hemelryk
2780 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
2783 * @property-read int $id
2784 * @property-read string $fullname
2785 * @property-read string $shortname
2786 * @property-read string $summary
2787 * @property-read int $summaryformat
2788 * @property-read int $summarytrust
2789 * @property-read string $reason
2790 * @property-read int $requester
2792 class course_request {
2795 * This is the stdClass that stores the properties for the course request
2796 * and is externally accessed through the __get magic method
2799 protected $properties;
2802 * An array of options for the summary editor used by course request forms.
2803 * This is initially set by {@link summary_editor_options()}
2807 protected static $summaryeditoroptions;
2810 * Static function to prepare the summary editor for working with a course
2814 * @param null|stdClass $data Optional, an object containing the default values
2815 * for the form, these may be modified when preparing the
2816 * editor so this should be called before creating the form
2817 * @return stdClass An object that can be used to set the default values for
2820 public static function prepare($data=null) {
2821 if ($data === null) {
2822 $data = new stdClass;
2824 $data = file_prepare_standard_editor($data, 'summary', self::summary_editor_options());
2829 * Static function to create a new course request when passed an array of properties
2832 * This function also handles saving any files that may have been used in the editor
2835 * @param stdClass $data
2836 * @return course_request The newly created course request
2838 public static function create($data) {
2839 global $USER, $DB, $CFG;
2840 $data->requester = $USER->id;
2842 // Setting the default category if none set.
2843 if (empty($data->category) || empty($CFG->requestcategoryselection)) {
2844 $data->category = $CFG->defaultrequestcategory;
2847 // Summary is a required field so copy the text over
2848 $data->summary = $data->summary_editor['text'];
2849 $data->summaryformat = $data->summary_editor['format'];
2851 $data->id = $DB->insert_record('course_request', $data);
2853 // Create a new course_request object and return it
2854 $request = new course_request($data);
2856 // Notify the admin if required.
2857 if ($users = get_users_from_config($CFG->courserequestnotify, 'moodle/site:approvecourse')) {
2860 $a->link = "$CFG->wwwroot/course/pending.php";
2861 $a->user = fullname($USER);
2862 $subject = get_string('courserequest');
2863 $message = get_string('courserequestnotifyemail', 'admin', $a);
2864 foreach ($users as $user) {
2865 $request->notify($user, $USER, 'courserequested', $subject, $message);
2873 * Returns an array of options to use with a summary editor
2875 * @uses course_request::$summaryeditoroptions
2876 * @return array An array of options to use with the editor
2878 public static function summary_editor_options() {
2880 if (self::$summaryeditoroptions === null) {
2881 self::$summaryeditoroptions = array('maxfiles' => 0, 'maxbytes'=>0);
2883 return self::$summaryeditoroptions;
2887 * Loads the properties for this course request object. Id is required and if
2888 * only id is provided then we load the rest of the properties from the database
2890 * @param stdClass|int $properties Either an object containing properties
2891 * or the course_request id to load
2893 public function __construct($properties) {
2895 if (empty($properties->id)) {
2896 if (empty($properties)) {
2897 throw new coding_exception('You must provide a course request id when creating a course_request object');
2900 $properties = new stdClass;
2901 $properties->id = (int)$id;
2904 if (empty($properties->requester)) {
2905 if (!($this->properties = $DB->get_record('course_request', array('id' => $properties->id)))) {
2906 print_error('unknowncourserequest');
2909 $this->properties = $properties;
2911 $this->properties->collision = null;
2915 * Returns the requested property
2917 * @param string $key
2920 public function __get($key) {
2921 return $this->properties->$key;
2925 * Override this to ensure empty($request->blah) calls return a reliable answer...
2927 * This is required because we define the __get method
2930 * @return bool True is it not empty, false otherwise
2932 public function __isset($key) {
2933 return (!empty($this->properties->$key));
2937 * Returns the user who requested this course
2939 * Uses a static var to cache the results and cut down the number of db queries
2941 * @staticvar array $requesters An array of cached users
2942 * @return stdClass The user who requested the course
2944 public function get_requester() {
2946 static $requesters= array();
2947 if (!array_key_exists($this->properties->requester, $requesters)) {
2948 $requesters[$this->properties->requester] = $DB->get_record('user', array('id'=>$this->properties->requester));
2950 return $requesters[$this->properties->requester];
2954 * Checks that the shortname used by the course does not conflict with any other
2955 * courses that exist
2957 * @param string|null $shortnamemark The string to append to the requests shortname
2958 * should a conflict be found
2959 * @return bool true is there is a conflict, false otherwise
2961 public function check_shortname_collision($shortnamemark = '[*]') {
2964 if ($this->properties->collision !== null) {
2965 return $this->properties->collision;
2968 if (empty($this->properties->shortname)) {
2969 debugging('Attempting to check a course request shortname before it has been set', DEBUG_DEVELOPER);
2970 $this->properties->collision = false;
2971 } else if ($DB->record_exists('course', array('shortname' => $this->properties->shortname))) {
2972 if (!empty($shortnamemark)) {
2973 $this->properties->shortname .= ' '.$shortnamemark;
2975 $this->properties->collision = true;
2977 $this->properties->collision = false;
2979 return $this->properties->collision;
2983 * Returns the category where this course request should be created
2985 * Note that we don't check here that user has a capability to view
2986 * hidden categories if he has capabilities 'moodle/site:approvecourse' and
2987 * 'moodle/course:changecategory'
2991 public function get_category() {
2993 require_once($CFG->libdir.'/coursecatlib.php');
2994 // If the category is not set, if the current user does not have the rights to change the category, or if the
2995 // category does not exist, we set the default category to the course to be approved.
2996 // The system level is used because the capability moodle/site:approvecourse is based on a system level.
2997 if (empty($this->properties->category) || !has_capability('moodle/course:changecategory', context_system::instance()) ||
2998 (!$category = coursecat::get($this->properties->category, IGNORE_MISSING, true))) {
2999 $category = coursecat::get($CFG->defaultrequestcategory, IGNORE_MISSING, true);
3002 $category = coursecat::get_default();
3008 * This function approves the request turning it into a course
3010 * This function converts the course request into a course, at the same time
3011 * transferring any files used in the summary to the new course and then removing
3012 * the course request and the files associated with it.
3014 * @return int The id of the course that was created from this request
3016 public function approve() {
3017 global $CFG, $DB, $USER;
3019 $user = $DB->get_record('user', array('id' => $this->properties->requester, 'deleted'=>0), '*', MUST_EXIST);
3021 $courseconfig = get_config('moodlecourse');
3023 // Transfer appropriate settings
3024 $data = clone($this->properties);
3026 unset($data->reason);
3027 unset($data->requester);
3030 $category = $this->get_category();
3031 $data->category = $category->id;
3032 // Set misc settings
3033 $data->requested = 1;
3035 // Apply course default settings
3036 $data->format = $courseconfig->format;
3037 $data->newsitems = $courseconfig->newsitems;
3038 $data->showgrades = $courseconfig->showgrades;
3039 $data->showreports = $courseconfig->showreports;
3040 $data->maxbytes = $courseconfig->maxbytes;
3041 $data->groupmode = $courseconfig->groupmode;
3042 $data->groupmodeforce = $courseconfig->groupmodeforce;
3043 $data->visible = $courseconfig->visible;
3044 $data->visibleold = $data->visible;
3045 $data->lang = $courseconfig->lang;
3047 $course = create_course($data);
3048 $context = context_course::instance($course->id, MUST_EXIST);
3050 // add enrol instances
3051 if (!$DB->record_exists('enrol', array('courseid'=>$course->id, 'enrol'=>'manual'))) {
3052 if ($manual = enrol_get_plugin('manual')) {
3053 $manual->add_default_instance($course);
3057 // enrol the requester as teacher if necessary
3058 if (!empty($CFG->creatornewroleid) and !is_viewing($context, $user, 'moodle/role:assign') and !is_enrolled($context, $user, 'moodle/role:assign')) {
3059 enrol_try_internal_enrol($course->id, $user->id, $CFG->creatornewroleid);
3064 $a = new stdClass();
3065 $a->name = format_string($course->fullname, true, array('context' => context_course::instance($course->id)));
3066 $a->url = $CFG->wwwroot.'/course/view.php?id=' . $course->id;
3067 $this->notify($user, $USER, 'courserequestapproved', get_string('courseapprovedsubject'), get_string('courseapprovedemail2', 'moodle', $a));
3073 * Reject a course request
3075 * This function rejects a course request, emailing the requesting user the
3076 * provided notice and then removing the request from the database
3078 * @param string $notice The message to display to the user
3080 public function reject($notice) {
3082 $user = $DB->get_record('user', array('id' => $this->properties->requester), '*', MUST_EXIST);
3083 $this->notify($user, $USER, 'courserequestrejected', get_string('courserejectsubject'), get_string('courserejectemail', 'moodle', $notice));
3088 * Deletes the course request and any associated files
3090 public function delete() {
3092 $DB->delete_records('course_request', array('id' => $this->properties->id));
3096 * Send a message from one user to another using events_trigger
3098 * @param object $touser
3099 * @param object $fromuser
3100 * @param string $name
3101 * @param string $subject
3102 * @param string $message
3104 protected function notify($touser, $fromuser, $name='courserequested', $subject, $message) {
3105 $eventdata = new stdClass();
3106 $eventdata->component = 'moodle';
3107 $eventdata->name = $name;
3108 $eventdata->userfrom = $fromuser;
3109 $eventdata->userto = $touser;
3110 $eventdata->subject = $subject;
3111 $eventdata->fullmessage = $message;
3112 $eventdata->fullmessageformat = FORMAT_PLAIN;
3113 $eventdata->fullmessagehtml = '';
3114 $eventdata->smallmessage = '';
3115 $eventdata->notification = 1;
3116 message_send($eventdata);
3121 * Return a list of page types
3122 * @param string $pagetype current page type
3123 * @param context $parentcontext Block's parent context
3124 * @param context $currentcontext Current context of block
3125 * @return array array of page types
3127 function course_page_type_list($pagetype, $parentcontext, $currentcontext) {
3128 if ($pagetype === 'course-index' || $pagetype === 'course-index-category') {
3129 // For courses and categories browsing pages (/course/index.php) add option to show on ANY category page
3130 $pagetypes = array('*' => get_string('page-x', 'pagetype'),
3131 'course-index-*' => get_string('page-course-index-x', 'pagetype'),
3133 } else if ($currentcontext && (!($coursecontext = $currentcontext->get_course_context(false)) || $coursecontext->instanceid == SITEID)) {
3134 // We know for sure that despite pagetype starts with 'course-' this is not a page in course context (i.e. /course/search.php, etc.)
3135 $pagetypes = array('*' => get_string('page-x', 'pagetype'));
3137 // Otherwise consider it a page inside a course even if $currentcontext is null
3138 $pagetypes = array('*' => get_string('page-x', 'pagetype'),
3139 'course-*' => get_string('page-course-x', 'pagetype'),
3140 'course-view-*' => get_string('page-course-view-x', 'pagetype')
3147 * Determine whether course ajax should be enabled for the specified course
3149 * @param stdClass $course The course to test against
3150 * @return boolean Whether course ajax is enabled or note
3152 function course_ajax_enabled($course) {
3153 global $CFG, $PAGE, $SITE;
3155 // The user must be editing for AJAX to be included
3156 if (!$PAGE->user_is_editing()) {
3160 // Check that the theme suports
3161 if (!$PAGE->theme->enablecourseajax) {
3165 // Check that the course format supports ajax functionality
3166 // The site 'format' doesn't have information on course format support
3167 if ($SITE->id !== $course->id) {
3168 $courseformatajaxsupport = course_format_ajax_support($course->format);
3169 if (!$courseformatajaxsupport->capable) {
3174 // All conditions have been met so course ajax should be enabled
3179 * Include the relevant javascript and language strings for the resource
3180 * toolbox YUI module
3182 * @param integer $id The ID of the course being applied to
3183 * @param array $usedmodules An array containing the names of the modules in use on the page
3184 * @param array $enabledmodules An array containing the names of the enabled (visible) modules on this site
3185 * @param stdClass $config An object containing configuration parameters for ajax modules including:
3186 * * resourceurl The URL to post changes to for resource changes
3187 * * sectionurl The URL to post changes to for section changes
3188 * * pageparams Additional parameters to pass through in the post
3191 function include_course_ajax($course, $usedmodules = array(), $enabledmodules = null, $config = null) {
3192 global $CFG, $PAGE, $SITE;
3194 // Ensure that ajax should be included
3195 if (!course_ajax_enabled($course)) {
3200 $config = new stdClass();
3203 // The URL to use for resource changes
3204 if (!isset($config->resourceurl)) {
3205 $config->resourceurl = '/course/rest.php';
3208 // The URL to use for section changes
3209 if (!isset($config->sectionurl)) {
3210 $config->sectionurl = '/course/rest.php';
3213 // Any additional parameters which need to be included on page submission
3214 if (!isset($config->pageparams)) {
3215 $config->pageparams = array();
3218 // Include toolboxes
3219 $PAGE->requires->yui_module('moodle-course-toolboxes',
3220 'M.course.init_resource_toolbox',
3222 'courseid' => $course->id,
3223 'ajaxurl' => $config->resourceurl,
3224 'config' => $config,
3227 $PAGE->requires->yui_module('moodle-course-toolboxes',
3228 'M.course.init_section_toolbox',
3230 'courseid' => $course->id,
3231 'format' => $course->format,
3232 'ajaxurl' => $config->sectionurl,
3233 'config' => $config,
3237 // Include course dragdrop
3238 if (course_format_uses_sections($course->format)) {
3239 $PAGE->requires->yui_module('moodle-course-dragdrop', 'M.course.init_section_dragdrop',
3241 'courseid' => $course->id,
3242 'ajaxurl' => $config->sectionurl,
3243 'config' => $config,
3246 $PAGE->requires->yui_module('moodle-course-dragdrop', 'M.course.init_resource_dragdrop',
3248 'courseid' => $course->id,
3249 'ajaxurl' => $config->resourceurl,
3250 'config' => $config,
3254 // Require various strings for the command toolbox
3255 $PAGE->requires->strings_for_js(array(
3258 'deletechecktypename',
3260 'edittitleinstructions',
3266 'clicktochangeinbrackets',
3271 'movecoursesection',
3274 'emptydragdropregion',
3280 // Include section-specific strings for formats which support sections.
3281 if (course_format_uses_sections($course->format)) {
3282 $PAGE->requires->strings_for_js(array(
3285 ), 'format_' . $course->format);
3288 // For confirming resource deletion we need the name of the module in question
3289 foreach ($usedmodules as $module => $modname) {
3290 $PAGE->requires->string_for_js('pluginname', $module);
3293 // Load drag and drop upload AJAX.
3294 require_once($CFG->dirroot.'/course/dnduploadlib.php');
3295 dndupload_add_to_course($course, $enabledmodules);
3301 * Returns the sorted list of available course formats, filtered by enabled if necessary
3303 * @param bool $enabledonly return only formats that are enabled
3304 * @return array array of sorted format names
3306 function get_sorted_course_formats($enabledonly = false) {
3308 $formats = core_component::get_plugin_list('format');
3310 if (!empty($CFG->format_plugins_sortorder)) {
3311 $order = explode(',', $CFG->format_plugins_sortorder);
3312 $order = array_merge(array_intersect($order, array_keys($formats)),
3313 array_diff(array_keys($formats), $order));
3315 $order = array_keys($formats);
3317 if (!$enabledonly) {
3320 $sortedformats = array();
3321 foreach ($order as $formatname) {
3322 if (!get_config('format_'.$formatname, 'disabled')) {
3323 $sortedformats[] = $formatname;
3326 return $sortedformats;
3330 * The URL to use for the specified course (with section)
3332 * @param int|stdClass $courseorid The course to get the section name for (either object or just course id)
3333 * @param int|stdClass $section Section object from database or just field course_sections.section
3334 * if omitted the course view page is returned
3335 * @param array $options options for view URL. At the moment core uses:
3336 * 'navigation' (bool) if true and section has no separate page, the function returns null
3337 * 'sr' (int) used by multipage formats to specify to which section to return
3338 * @return moodle_url The url of course
3340 function course_get_url($courseorid, $section = null, $options = array()) {
3341 return course_get_format($courseorid)->get_view_url($section, $options);
3348 * - capability checks and other checks
3349 * - create the module from the module info
3351 * @param object $module
3352 * @return object the created module info
3353 * @throws moodle_exception if user is not allowed to perform the action or module is not allowed in this course
3355 function create_module($moduleinfo) {
3358 require_once($CFG->dirroot . '/course/modlib.php');
3360 // Check manadatory attributs.
3361 $mandatoryfields = array('modulename', 'course', 'section', 'visible');
3362 if (plugin_supports('mod', $moduleinfo->modulename, FEATURE_MOD_INTRO, true)) {
3363 $mandatoryfields[] = 'introeditor';
3365 foreach($mandatoryfields as $mandatoryfield) {
3366 if (!isset($moduleinfo->{$mandatoryfield})) {
3367 throw new moodle_exception('createmodulemissingattribut', '', '', $mandatoryfield);
3371 // Some additional checks (capability / existing instances).
3372 $course = $DB->get_record('course', array('id'=>$moduleinfo->course), '*', MUST_EXIST);
3373 list($module, $context, $cw) = can_add_moduleinfo($course, $moduleinfo->modulename, $moduleinfo->section);
3376 $moduleinfo->module = $module->id;
3377 $moduleinfo = add_moduleinfo($moduleinfo, $course, null);
3386 * - capability and other checks
3387 * - update the module
3389 * @param object $module
3390 * @return object the updated module info
3391 * @throws moodle_exception if current user is not allowed to update the module
3393 function update_module($moduleinfo) {
3396 require_once($CFG->dirroot . '/course/modlib.php');
3398 // Check the course module exists.
3399 $cm = get_coursemodule_from_id('', $moduleinfo->coursemodule, 0, false, MUST_EXIST);
3401 // Check the course exists.
3402 $course = $DB->get_record('course', array('id'=>$cm->course), '*', MUST_EXIST);
3404 // Some checks (capaibility / existing instances).
3405 list($cm, $context, $module, $data, $cw) = can_update_moduleinfo($cm);
3407 // Retrieve few information needed by update_moduleinfo.
3408 $moduleinfo->modulename = $cm->modname;
3409 if (!isset($moduleinfo->scale)) {
3410 $moduleinfo->scale = 0;
3412 $moduleinfo->type = 'mod';
3414 // Update the module.
3415 list($cm, $moduleinfo) = update_moduleinfo($cm, $moduleinfo, $course, null);
3421 * Duplicate a module on the course for ajax.
3423 * @see mod_duplicate_module()
3424 * @param object $course The course
3425 * @param object $cm The course module to duplicate
3426 * @param int $sr The section to link back to (used for creating the links)
3427 * @throws moodle_exception if the plugin doesn't support duplication
3428 * @return Object containing:
3429 * - fullcontent: The HTML markup for the created CM
3430 * - cmid: The CMID of the newly created CM
3431 * - redirect: Whether to trigger a redirect following this change
3433 function mod_duplicate_activity($course, $cm, $sr = null) {
3436 $newcm = duplicate_module($course, $cm);
3438 $resp = new stdClass();
3440 $courserenderer = $PAGE->get_renderer('core', 'course');
3441 $completioninfo = new completion_info($course);
3442 $modulehtml = $courserenderer->course_section_cm($course, $completioninfo,
3443 $newcm, null, array());
3445 $resp->fullcontent = $courserenderer->course_section_cm_list_item($course, $completioninfo, $newcm, $sr);
3446 $resp->cmid = $newcm->id;
3448 // Trigger a redirect.
3449 $resp->redirect = true;
3455 * Api to duplicate a module.
3457 * @param object $course course object.
3458 * @param object $cm course module object to be duplicated.
3462 * @throws coding_exception
3463 * @throws moodle_exception
3464 * @throws restore_controller_exception
3466 * @return cm_info|null cminfo object if we sucessfully duplicated the mod and found the new cm.
3468 function duplicate_module($course, $cm) {
3469 global $CFG, $DB, $USER;
3470 require_once($CFG->dirroot . '/backup/util/includes/backup_includes.php');
3471 require_once($CFG->dirroot . '/backup/util/includes/restore_includes.php');
3472 require_once($CFG->libdir . '/filelib.php');
3474 $a = new stdClass();
3475 $a->modtype = get_string('modulename', $cm->modname);
3476 $a->modname = format_string($cm->name);
3478 if (!plugin_supports('mod', $cm->modname, FEATURE_BACKUP_MOODLE2)) {
3479 throw new moodle_exception('duplicatenosupport', 'error', '', $a);
3482 // Backup the activity.
3484 $bc = new backup_controller(backup::TYPE_1ACTIVITY, $cm->id, backup::FORMAT_MOODLE,
3485 backup::INTERACTIVE_NO, backup::MODE_IMPORT, $USER->id);
3487 $backupid = $bc->get_backupid();
3488 $backupbasepath = $bc->get_plan()->get_basepath();
3490 $bc->execute_plan();
3494 // Restore the backup immediately.
3496 $rc = new restore_controller($backupid, $course->id,
3497 backup::INTERACTIVE_NO, backup::MODE_IMPORT, $USER->id, backup::TARGET_CURRENT_ADDING);
3499 $cmcontext = context_module::instance($cm->id);
3500 if (!$rc->execute_precheck()) {
3501 $precheckresults = $rc->get_precheck_results();
3502 if (is_array($precheckresults) && !empty($precheckresults['errors'])) {
3503 if (empty($CFG->keeptempdirectoriesonbackup)) {
3504 fulldelete($backupbasepath);
3509 $rc->execute_plan();
3511 // Now a bit hacky part follows - we try to get the cmid of the newly
3512 // restored copy of the module.
3514 $tasks = $rc->get_plan()->get_tasks();
3515 foreach ($tasks as $task) {
3516 if (is_subclass_of($task, 'restore_activity_task')) {
3517 if ($task->get_old_contextid() == $cmcontext->id) {
3518 $newcmid = $task->get_moduleid();
3524 // If we know the cmid of the new course module, let us move it
3525 // right below the original one. otherwise it will stay at the
3526 // end of the section.
3528 $info = get_fast_modinfo($course);
3529 $newcm = $info->get_cm($newcmid);
3530 $section = $DB->get_record('course_sections', array('id' => $cm->section, 'course' => $cm->course));
3531 moveto_module($newcm, $section, $cm);
3532 moveto_module($cm, $section, $newcm);
3534 // Trigger course module created event. We can trigger the event only if we know the newcmid.
3535 $event = \core\event\course_module_created::create_from_cm($newcm);
3538 rebuild_course_cache($cm->course);
3542 if (empty($CFG->keeptempdirectoriesonbackup)) {
3543 fulldelete($backupbasepath);
3546 return isset($newcm) ? $newcm : null;
3550 * Compare two objects to find out their correct order based on timestamp (to be used by usort).
3551 * Sorts by descending order of time.
3553 * @param stdClass $a First object
3554 * @param stdClass $b Second object
3555 * @return int 0,1,-1 representing the order
3557 function compare_activities_by_time_desc($a, $b) {
3558 // Make sure the activities actually have a timestamp property.
3559 if ((!property_exists($a, 'timestamp')) && (!property_exists($b, 'timestamp'))) {
3562 // We treat instances without timestamp as if they have a timestamp of 0.
3563 if ((!property_exists($a, 'timestamp')) && (property_exists($b,'timestamp'))) {
3566 if ((property_exists($a, 'timestamp')) && (!property_exists($b, 'timestamp'))) {
3569 if ($a->timestamp == $b->timestamp) {
3572 return ($a->timestamp > $b->timestamp) ? -1 : 1;
3576 * Compare two objects to find out their correct order based on timestamp (to be used by usort).
3577 * Sorts by ascending order of time.
3579 * @param stdClass $a First object
3580 * @param stdClass $b Second object
3581 * @return int 0,1,-1 representing the order
3583 function compare_activities_by_time_asc($a, $b) {
3584 // Make sure the activities actually have a timestamp property.
3585 if ((!property_exists($a, 'timestamp')) && (!property_exists($b, 'timestamp'))) {
3588 // We treat instances without timestamp as if they have a timestamp of 0.