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 * Lists all the users within a given course.
20 * @copyright 1999 Martin Dougiamas http://dougiamas.com
21 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
25 require_once('../config.php');
26 require_once($CFG->dirroot.'/user/lib.php');
27 require_once($CFG->libdir.'/tablelib.php');
28 require_once($CFG->libdir.'/filelib.php');
30 define('USER_SMALL_CLASS', 20); // Below this is considered small.
31 define('USER_LARGE_CLASS', 200); // Above this is considered large.
32 define('DEFAULT_PAGE_SIZE', 20);
33 define('SHOW_ALL_PAGE_SIZE', 5000);
35 $page = optional_param('page', 0, PARAM_INT); // Which page to show.
36 $perpage = optional_param('perpage', DEFAULT_PAGE_SIZE, PARAM_INT); // How many per page.
37 $accesssince = optional_param('accesssince', 0, PARAM_INT); // Filter by last access. -1 = never.
38 $search = optional_param('search', '', PARAM_RAW); // Make sure it is processed with p() or s() when sending to output!
39 $roleid = optional_param('roleid', 0, PARAM_INT); // Optional roleid, 0 means all enrolled users (or all on the frontpage).
40 $contextid = optional_param('contextid', 0, PARAM_INT); // One of this or.
41 $courseid = optional_param('id', 0, PARAM_INT); // This are required.
42 $selectall = optional_param('selectall', false, PARAM_BOOL); // When rendering checkboxes against users mark them all checked.
44 $PAGE->set_url('/user/index.php', array(
46 'perpage' => $perpage,
47 'accesssince' => $accesssince,
50 'contextid' => $contextid,
54 $context = context::instance_by_id($contextid, MUST_EXIST);
55 if ($context->contextlevel != CONTEXT_COURSE) {
56 print_error('invalidcontext');
58 $course = $DB->get_record('course', array('id' => $context->instanceid), '*', MUST_EXIST);
60 $course = $DB->get_record('course', array('id' => $courseid), '*', MUST_EXIST);
61 $context = context_course::instance($course->id, MUST_EXIST);
63 // Not needed anymore.
67 require_login($course);
69 $systemcontext = context_system::instance();
70 $isfrontpage = ($course->id == SITEID);
72 $frontpagectx = context_course::instance(SITEID);
75 $PAGE->set_pagelayout('admin');
76 require_capability('moodle/site:viewparticipants', $systemcontext);
78 $PAGE->set_pagelayout('incourse');
79 require_capability('moodle/course:viewparticipants', $context);
82 $rolenamesurl = new moodle_url("$CFG->wwwroot/user/index.php?contextid=$context->id&sifirst=&silast=");
84 $rolenames = role_fix_names(get_profile_roles($context), $context, ROLENAME_ALIAS, true);
86 $rolenames[0] = get_string('allsiteusers', 'role');
88 $rolenames[0] = get_string('allparticipants');
91 // Make sure other roles may not be selected by any means.
92 if (empty($rolenames[$roleid])) {
93 print_error('noparticipants');
96 // No roles to display yet?
97 // frontpage course is an exception, on the front page course we should display all users.
98 if (empty($rolenames) && !$isfrontpage) {
99 if (has_capability('moodle/role:assign', $context)) {
100 redirect($CFG->wwwroot.'/'.$CFG->admin.'/roles/assign.php?contextid='.$context->id);
102 print_error('noparticipants');
107 user_list_view($course, $context);
109 $bulkoperations = has_capability('moodle/course:bulkmessaging', $context);
111 $countries = get_string_manager()->get_list_of_countries();
113 $strnever = get_string('never');
115 $datestring = new stdClass();
116 $datestring->year = get_string('year');
117 $datestring->years = get_string('years');
118 $datestring->day = get_string('day');
119 $datestring->days = get_string('days');
120 $datestring->hour = get_string('hour');
121 $datestring->hours = get_string('hours');
122 $datestring->min = get_string('min');
123 $datestring->mins = get_string('mins');
124 $datestring->sec = get_string('sec');
125 $datestring->secs = get_string('secs');
127 // Check to see if groups are being used in this course
128 // and if so, set $currentgroup to reflect the current group.
130 $groupmode = groups_get_course_groupmode($course); // Groups are being used.
131 $currentgroup = groups_get_course_group($course, true);
133 if (!$currentgroup) { // To make some other functions work better later.
134 $currentgroup = null;
137 $isseparategroups = ($course->groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context));
139 $PAGE->set_title("$course->shortname: ".get_string('participants'));
140 $PAGE->set_heading($course->fullname);
141 $PAGE->set_pagetype('course-view-' . $course->format);
142 $PAGE->add_body_class('path-user'); // So we can style it independently.
143 $PAGE->set_other_editing_capability('moodle/course:manageactivities');
145 echo $OUTPUT->header();
146 echo $OUTPUT->heading(get_string('participants'));
148 echo '<div class="userlist">';
150 if ($isseparategroups and (!$currentgroup) ) {
151 // The user is not in the group so show message and exit.
152 echo $OUTPUT->heading(get_string("notingroup"));
153 echo $OUTPUT->footer();
158 // Should use this variable so that we don't break stuff every time a variable is added or changed.
159 $baseurl = new moodle_url('/user/index.php', array(
160 'contextid' => $context->id,
163 'perpage' => $perpage,
164 'accesssince' => $accesssince,
165 'search' => s($search)));
168 if ($course->id == SITEID) {
169 $filtertype = 'site';
170 } else if ($course->id && !$currentgroup) {
171 $filtertype = 'course';
172 $filterselect = $course->id;
174 $filtertype = 'group';
175 $filterselect = $currentgroup;
180 // Get the hidden field list.
181 if (has_capability('moodle/course:viewhiddenuserfields', $context)) {
182 $hiddenfields = array(); // Teachers and admins are allowed to see everything.
184 $hiddenfields = array_flip(explode(',', $CFG->hiddenuserfields));
187 if (isset($hiddenfields['lastaccess'])) {
188 // Do not allow access since filtering.
192 // Print settings and things in a table across the top.
193 $controlstable = new html_table();
194 $controlstable->attributes['class'] = 'controls';
195 $controlstable->cellspacing = 0;
196 $controlstable->data[] = new html_table_row();
198 // Print my course menus.
199 if ($mycourses = enrol_get_my_courses()) {
200 $courselist = array();
201 $popupurl = new moodle_url('/user/index.php?roleid='.$roleid.'&sifirst=&silast=');
202 foreach ($mycourses as $mycourse) {
203 $coursecontext = context_course::instance($mycourse->id);
204 $courselist[$mycourse->id] = format_string($mycourse->shortname, true, array('context' => $coursecontext));
206 if (has_capability('moodle/site:viewparticipants', $systemcontext)) {
207 unset($courselist[SITEID]);
208 $courselist = array(SITEID => format_string($SITE->shortname, true, array('context' => $systemcontext))) + $courselist;
210 $select = new single_select($popupurl, 'id', $courselist, $course->id, null, 'courseform');
211 $select->set_label(get_string('mycourses'));
212 $controlstable->data[0]->cells[] = $OUTPUT->render($select);
215 if ($groupmenu = groups_print_course_menu($course, $baseurl->out(), true)) {
216 $controlstable->data[0]->cells[] = $groupmenu;
219 if (!isset($hiddenfields['lastaccess'])) {
220 // Get minimum lastaccess for this course and display a dropbox to filter by lastaccess going back this far.
221 // We need to make it diferently for normal courses and site course.
223 $minlastaccess = $DB->get_field_sql('SELECT min(timeaccess)
224 FROM {user_lastaccess}
226 AND timeaccess != 0', array($course->id));
227 $lastaccess0exists = $DB->record_exists('user_lastaccess', array('courseid' => $course->id, 'timeaccess' => 0));
229 $minlastaccess = $DB->get_field_sql('SELECT min(lastaccess)
231 WHERE lastaccess != 0');
232 $lastaccess0exists = $DB->record_exists('user', array('lastaccess' => 0));
235 $now = usergetmidnight(time());
236 $timeaccess = array();
237 $baseurl->remove_params('accesssince');
239 // Makes sense for this to go first.
240 $timeoptions[0] = get_string('selectperiod');
243 for ($i = 1; $i < 7; $i++) {
244 if (strtotime('-'.$i.' days', $now) >= $minlastaccess) {
245 $timeoptions[strtotime('-'.$i.' days', $now)] = get_string('numdays', 'moodle', $i);
249 for ($i = 1; $i < 10; $i++) {
250 if (strtotime('-'.$i.' weeks', $now) >= $minlastaccess) {
251 $timeoptions[strtotime('-'.$i.' weeks', $now)] = get_string('numweeks', 'moodle', $i);
255 for ($i = 2; $i < 12; $i++) {
256 if (strtotime('-'.$i.' months', $now) >= $minlastaccess) {
257 $timeoptions[strtotime('-'.$i.' months', $now)] = get_string('nummonths', 'moodle', $i);
261 if (strtotime('-1 year', $now) >= $minlastaccess) {
262 $timeoptions[strtotime('-1 year', $now)] = get_string('lastyear');
265 if (!empty($lastaccess0exists)) {
266 $timeoptions[-1] = get_string('never');
269 if (count($timeoptions) > 1) {
270 $select = new single_select($baseurl, 'accesssince', $timeoptions, $accesssince, null, 'timeoptions');
271 $select->set_label(get_string('usersnoaccesssince'));
272 $controlstable->data[0]->cells[] = $OUTPUT->render($select);
276 echo html_writer::table($controlstable);
278 if ($currentgroup and (!$isseparategroups or has_capability('moodle/site:accessallgroups', $context))) {
279 // Display info about the group.
280 if ($group = groups_get_group($currentgroup)) {
281 if (!empty($group->description) or (!empty($group->picture) and empty($group->hidepicture))) {
282 $groupinfotable = new html_table();
283 $groupinfotable->attributes['class'] = 'groupinfobox';
284 $picturecell = new html_table_cell();
285 $picturecell->attributes['class'] = 'left side picture';
286 $picturecell->text = print_group_picture($group, $course->id, true, true, false);
288 $contentcell = new html_table_cell();
289 $contentcell->attributes['class'] = 'content';
291 $contentheading = $group->name;
292 if (has_capability('moodle/course:managegroups', $context)) {
293 $aurl = new moodle_url('/group/group.php', array('id' => $group->id, 'courseid' => $group->courseid));
294 $contentheading .= ' ' . $OUTPUT->action_icon($aurl, new pix_icon('t/edit', get_string('editgroupprofile')));
297 $group->description = file_rewrite_pluginfile_urls($group->description, 'pluginfile.php', $context->id, 'group',
298 'description', $group->id);
299 if (!isset($group->descriptionformat)) {
300 $group->descriptionformat = FORMAT_MOODLE;
302 $options = array('overflowdiv' => true);
303 $formatteddesc = format_text($group->description, $group->descriptionformat, $options);
304 $contentcell->text = $OUTPUT->heading($contentheading, 3) . $formatteddesc;
305 $groupinfotable->data[] = new html_table_row(array($picturecell, $contentcell));
306 echo html_writer::table($groupinfotable);
311 // Define a table showing a list of users in the current role selection.
312 $tablecolumns = array();
313 $tableheaders = array();
314 if ($bulkoperations) {
315 $tablecolumns[] = 'select';
316 $tableheaders[] = get_string('select');
318 $tablecolumns[] = 'userpic';
319 $tablecolumns[] = 'fullname';
321 $extrafields = get_extra_user_fields($context);
322 $tableheaders[] = get_string('userpic');
323 $tableheaders[] = get_string('fullnameuser');
326 foreach ($extrafields as $field) {
327 $tablecolumns[] = $field;
328 $tableheaders[] = get_user_field_name($field);
330 if (!isset($hiddenfields['city'])) {
331 $tablecolumns[] = 'city';
332 $tableheaders[] = get_string('city');
334 if (!isset($hiddenfields['country'])) {
335 $tablecolumns[] = 'country';
336 $tableheaders[] = get_string('country');
338 if (!isset($hiddenfields['lastaccess'])) {
339 $tablecolumns[] = 'lastaccess';
340 if ($course->id == SITEID) {
341 // Exception case for viewing participants on site home.
342 $tableheaders[] = get_string('lastsiteaccess');
344 $tableheaders[] = get_string('lastcourseaccess');
348 $table = new flexible_table('user-index-participants-'.$course->id);
349 $table->define_columns($tablecolumns);
350 $table->define_headers($tableheaders);
351 $table->define_baseurl($baseurl->out());
353 if (!isset($hiddenfields['lastaccess'])) {
354 $table->sortable(true, 'lastaccess', SORT_DESC);
356 $table->sortable(true, 'firstname', SORT_ASC);
359 $table->no_sorting('roles');
360 $table->no_sorting('groups');
361 $table->no_sorting('groupings');
362 $table->no_sorting('select');
364 $table->set_attribute('cellspacing', '0');
365 $table->set_attribute('id', 'participants');
366 $table->set_attribute('class', 'generaltable generalbox');
368 $table->set_control_variables(array(
369 TABLE_VAR_SORT => 'ssort',
370 TABLE_VAR_HIDE => 'shide',
371 TABLE_VAR_SHOW => 'sshow',
372 TABLE_VAR_IFIRST => 'sifirst',
373 TABLE_VAR_ILAST => 'silast',
374 TABLE_VAR_PAGE => 'spage'
378 list($esql, $params) = get_enrolled_sql($context, null, $currentgroup, true);
379 $joins = array("FROM {user} u");
382 $userfields = array('username', 'email', 'city', 'country', 'lang', 'timezone', 'maildisplay');
383 $mainuserfields = user_picture::fields('u', $userfields);
384 $extrasql = get_extra_user_fields_sql($context, 'u', '', $userfields);
387 $select = "SELECT $mainuserfields, u.lastaccess$extrasql";
388 $joins[] = "JOIN ($esql) e ON e.id = u.id"; // Everybody on the frontpage usually.
390 $wheres[] = get_user_lastaccess_sql($accesssince);
394 $select = "SELECT $mainuserfields, COALESCE(ul.timeaccess, 0) AS lastaccess$extrasql";
395 $joins[] = "JOIN ($esql) e ON e.id = u.id"; // Course enrolled users only.
396 $joins[] = "LEFT JOIN {user_lastaccess} ul ON (ul.userid = u.id AND ul.courseid = :courseid)"; // Not everybody accessed course yet.
397 $params['courseid'] = $course->id;
399 $wheres[] = get_course_lastaccess_sql($accesssince);
403 // Performance hacks - we preload user contexts together with accounts.
404 $ccselect = ', ' . context_helper::get_preload_record_columns_sql('ctx');
405 $ccjoin = "LEFT JOIN {context} ctx ON (ctx.instanceid = u.id AND ctx.contextlevel = :contextlevel)";
406 $params['contextlevel'] = CONTEXT_USER;
407 $select .= $ccselect;
411 // Limit list to users with some role only.
413 // We want to query both the current context and parent contexts.
414 list($relatedctxsql, $relatedctxparams) = $DB->get_in_or_equal($context->get_parent_context_ids(true), SQL_PARAMS_NAMED, 'relatedctx');
416 $wheres[] = "u.id IN (SELECT userid FROM {role_assignments} WHERE roleid = :roleid AND contextid $relatedctxsql)";
417 $params = array_merge($params, array('roleid' => $roleid), $relatedctxparams);
420 $from = implode("\n", $joins);
422 $where = "WHERE " . implode(" AND ", $wheres);
427 $totalcount = $DB->count_records_sql("SELECT COUNT(u.id) $from $where", $params);
429 if (!empty($search)) {
430 $fullname = $DB->sql_fullname('u.firstname', 'u.lastname');
431 $wheres[] = "(". $DB->sql_like($fullname, ':search1', false, false) .
432 " OR ". $DB->sql_like('email', ':search2', false, false) .
433 " OR ". $DB->sql_like('idnumber', ':search3', false, false) .") ";
434 $params['search1'] = "%$search%";
435 $params['search2'] = "%$search%";
436 $params['search3'] = "%$search%";
439 list($twhere, $tparams) = $table->get_sql_where();
442 $params = array_merge($params, $tparams);
445 $from = implode("\n", $joins);
447 $where = "WHERE " . implode(" AND ", $wheres);
452 if ($table->get_sql_sort()) {
453 $sort = ' ORDER BY '.$table->get_sql_sort();
458 $matchcount = $DB->count_records_sql("SELECT COUNT(u.id) $from $where", $params);
460 $table->initialbars(true);
461 $table->pagesize($perpage, $matchcount);
463 // List of users at the current visible page - paging makes it relatively short.
464 $userlist = $DB->get_recordset_sql("$select $from $where $sort", $params, $table->get_page_start(), $table->get_page_size());
466 // If there are multiple Roles in the course, then show a drop down menu for switching.
467 if (count($rolenames) > 1) {
468 echo '<div class="rolesform">';
469 echo $OUTPUT->single_select($rolenamesurl, 'roleid', $rolenames, $roleid, null,
470 'rolesform', array('label' => get_string('currentrole', 'role')));
473 } else if (count($rolenames) == 1) {
474 // When all users with the same role - print its name.
475 echo '<div class="rolesform">';
476 echo get_string('role').get_string('labelsep', 'langconfig');
477 $rolename = reset($rolenames);
483 if ($course->id != SITEID && has_capability('moodle/course:enrolreview', $context)) {
484 $editlink = new moodle_url('/enrol/users.php', array('id' => $course->id));
489 $a->number = $totalcount;
490 $a->role = $rolenames[$roleid];
491 $heading = format_string(get_string('xuserswiththerole', 'role', $a));
493 if ($currentgroup and !empty($group)) {
494 $a->group = $group->name;
495 $heading .= ' ' . format_string(get_string('ingroup', 'role', $a));
498 if ($accesssince && !empty($timeoptions[$accesssince])) {
499 $a->timeperiod = $timeoptions[$accesssince];
500 $heading .= ' ' . format_string(get_string('inactiveformorethan', 'role', $a));
503 $heading .= ": $a->number";
505 if (!empty($editlink)) {
506 $editlink->param('role', $roleid);
507 $heading .= $OUTPUT->action_icon($editlink, new pix_icon('t/edit', get_string('edit')));
509 echo $OUTPUT->heading($heading, 3);
511 if ($course->id == SITEID and $roleid < 0) {
512 $strallparticipants = get_string('allsiteusers', 'role');
514 $strallparticipants = get_string('allparticipants');
517 if (!empty($editlink)) {
518 $editlink = $OUTPUT->action_icon($editlink, new pix_icon('t/edit', get_string('edit')));
521 if ($matchcount < $totalcount) {
522 echo $OUTPUT->heading($strallparticipants.get_string('labelsep', 'langconfig').$matchcount.'/'.$totalcount . $editlink, 3);
524 echo $OUTPUT->heading($strallparticipants.get_string('labelsep', 'langconfig').$matchcount . $editlink, 3);
529 if ($bulkoperations) {
530 echo '<form action="action_redir.php" method="post" id="participantsform">';
532 echo '<input type="hidden" name="sesskey" value="'.sesskey().'" />';
533 echo '<input type="hidden" name="returnto" value="'.s($PAGE->url->out(false)).'" />';
536 $countrysort = (strpos($sort, 'country') !== false);
537 $timeformat = get_string('strftimedate');
541 $usersprinted = array();
542 foreach ($userlist as $user) {
543 if (in_array($user->id, $usersprinted)) { // Prevent duplicates by r.hidden - MDL-13935.
546 $usersprinted[] = $user->id; // Add new user to the array of users printed.
548 context_helper::preload_from_record($user);
550 if ($user->lastaccess) {
551 $lastaccess = format_time(time() - $user->lastaccess, $datestring);
553 $lastaccess = $strnever;
556 if (empty($user->country)) {
561 $country = '('.$user->country.') '.$countries[$user->country];
563 $country = $countries[$user->country];
567 $usercontext = context_user::instance($user->id);
569 if ($piclink = ($USER->id == $user->id || has_capability('moodle/user:viewdetails', $context) || has_capability('moodle/user:viewdetails', $usercontext))) {
570 $profilelink = '<strong><a href="'.$CFG->wwwroot.'/user/view.php?id='.$user->id.'&course='.$course->id.'">'.fullname($user).'</a></strong>';
572 $profilelink = '<strong>'.fullname($user).'</strong>';
576 if ($bulkoperations) {
578 $checked = 'checked="true"';
582 $data[] = '<input type="checkbox" class="usercheckbox" name="user'.$user->id.'" ' . $checked .'/>';
584 $data[] = $OUTPUT->user_picture($user, array('size' => 35, 'courseid' => $course->id));
585 $data[] = $profilelink;
587 foreach ($extrafields as $field) {
588 $data[] = $user->{$field};
591 if (!isset($hiddenfields['city'])) {
592 $data[] = $user->city;
594 if (!isset($hiddenfields['country'])) {
597 if (!isset($hiddenfields['lastaccess'])) {
598 $data[] = $lastaccess;
601 $table->add_data($data);
605 $table->print_html();
607 $perpageurl = clone($baseurl);
608 $perpageurl->remove_params('perpage');
609 if ($perpage == SHOW_ALL_PAGE_SIZE) {
610 $perpageurl->param('perpage', DEFAULT_PAGE_SIZE);
611 echo $OUTPUT->container(html_writer::link($perpageurl, get_string('showperpage', '', DEFAULT_PAGE_SIZE)), array(), 'showall');
613 } else if ($matchcount > 0 && $perpage < $matchcount) {
614 $perpageurl->param('perpage', SHOW_ALL_PAGE_SIZE);
615 echo $OUTPUT->container(html_writer::link($perpageurl, get_string('showall', '', $matchcount)), array(), 'showall');
618 if ($bulkoperations) {
619 echo '<br /><div class="buttons">';
621 if ($matchcount > 0 && $perpage < $matchcount) {
622 $perpageurl = clone($baseurl);
623 $perpageurl->remove_params('perpage');
624 $perpageurl->param('perpage', SHOW_ALL_PAGE_SIZE);
625 $perpageurl->param('selectall', true);
626 $showalllink = $perpageurl;
628 $showalllink = false;
631 echo html_writer::start_tag('div', array('class' => 'btn-group'));
632 if ($perpage < $matchcount) {
633 // Select all users, refresh page showing all users and mark them all selected.
634 $label = get_string('selectalluserswithcount', 'moodle', $matchcount);
635 echo html_writer::tag('input', "", array('type' => 'button', 'id' => 'checkall', 'class' => 'btn btn-secondary',
636 'value' => $label, 'data-showallink' => $showalllink));
637 // Select all users, mark all users on page as selected.
638 echo html_writer::tag('input', "", array('type' => 'button', 'id' => 'checkallonpage', 'class' => 'btn btn-secondary',
639 'value' => get_string('selectallusersonpage')));
641 echo html_writer::tag('input', "", array('type' => 'button', 'id' => 'checkallonpage', 'class' => 'btn btn-secondary',
642 'value' => get_string('selectall')));
645 echo html_writer::tag('input', "", array('type' => 'button', 'id' => 'checknone', 'class' => 'btn btn-secondary',
646 'value' => get_string('deselectall')));
647 echo html_writer::end_tag('div');
648 $displaylist = array();
649 $displaylist['messageselect.php'] = get_string('messageselectadd');
650 if (!empty($CFG->enablenotes) && has_capability('moodle/notes:manage', $context) && $context->id != $frontpagectx->id) {
651 $displaylist['addnote.php'] = get_string('addnewnote', 'notes');
652 $displaylist['groupaddnote.php'] = get_string('groupaddnewnote', 'notes');
655 echo $OUTPUT->help_icon('withselectedusers');
656 echo html_writer::tag('label', get_string("withselectedusers"), array('for' => 'formactionid'));
657 echo html_writer::select($displaylist, 'formaction', '', array('' => 'choosedots'), array('id' => 'formactionid'));
659 echo '<input type="hidden" name="id" value="'.$course->id.'" />';
660 echo '<noscript style="display:inline">';
661 echo '<div><input type="submit" value="'.get_string('ok').'" /></div>';
666 $module = array('name' => 'core_user', 'fullpath' => '/user/module.js');
667 $PAGE->requires->js_init_call('M.core_user.init_participation', null, false, $module);
670 // Show a search box if all participants don't fit on a single screen.
671 if ($totalcount > $perpage) {
672 echo '<form action="index.php" class="searchform"><div><input type="hidden" name="id" value="'.$course->id.'" />';
673 echo '<label for="search">' . get_string('search', 'search') . ' </label>';
674 echo '<input type="text" id="search" name="search" value="'.s($search).'" /> <input type="submit" value="'.get_string('search').'" /></div></form>'."\n";
677 echo '</div>'; // Userlist.
679 echo $OUTPUT->footer();
686 * Returns SQL that can be used to limit a query to a period where the user last accessed a course..
688 * @param string $accesssince
691 function get_course_lastaccess_sql($accesssince='') {
692 if (empty($accesssince)) {
695 if ($accesssince == -1) { // Never.
696 return 'ul.timeaccess = 0';
698 return 'ul.timeaccess != 0 AND ul.timeaccess < '.$accesssince;
703 * Returns SQL that can be used to limit a query to a period where the user last accessed the system.
705 * @param string $accesssince
708 function get_user_lastaccess_sql($accesssince='') {
709 if (empty($accesssince)) {
712 if ($accesssince == -1) { // Never.
713 return 'u.lastaccess = 0';
715 return 'u.lastaccess != 0 AND u.lastaccess < '.$accesssince;