user/index.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * Lists all the users within a given course.
  19  *
  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_user
  23  */
  24
  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');
  29
  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);
  34 define('MODE_BRIEF', 0);
  35 define('MODE_USERDETAILS', 1);
  36
  37 $page         = optional_param('page', 0, PARAM_INT); // Which page to show.
  38 $perpage      = optional_param('perpage', DEFAULT_PAGE_SIZE, PARAM_INT); // How many per page.
  39 $mode         = optional_param('mode', null, PARAM_INT); // Use the MODE_ constants.
  40 $accesssince  = optional_param('accesssince', 0, PARAM_INT); // Filter by last access. -1 = never.
  41 $search       = optional_param('search', '', PARAM_RAW); // Make sure it is processed with p() or s() when sending to output!
  42 $roleid       = optional_param('roleid', 0, PARAM_INT); // Optional roleid, 0 means all enrolled users (or all on the frontpage).
  43 $contextid    = optional_param('contextid', 0, PARAM_INT); // One of this or.
  44 $courseid     = optional_param('id', 0, PARAM_INT); // This are required.
  45 $selectall    = optional_param('selectall', false, PARAM_BOOL); // When rendering checkboxes against users mark them all checked.
  46
  47 $PAGE->set_url('/user/index.php', array(
  48         'page' => $page,
  49         'perpage' => $perpage,
  50         'mode' => $mode,
  51         'accesssince' => $accesssince,
  52         'search' => $search,
  53         'roleid' => $roleid,
  54         'contextid' => $contextid,
  55         'id' => $courseid));
  56
  57 if ($contextid) {
  58     $context = context::instance_by_id($contextid, MUST_EXIST);
  59     if ($context->contextlevel != CONTEXT_COURSE) {
  60         print_error('invalidcontext');
  61     }
  62     $course = $DB->get_record('course', array('id' => $context->instanceid), '*', MUST_EXIST);
  63 } else {
  64     $course = $DB->get_record('course', array('id' => $courseid), '*', MUST_EXIST);
  65     $context = context_course::instance($course->id, MUST_EXIST);
  66 }
  67 // Not needed anymore.
  68 unset($contextid);
  69 unset($courseid);
  70
  71 require_login($course);
  72
  73 $systemcontext = context_system::instance();
  74 $isfrontpage = ($course->id == SITEID);
  75
  76 $frontpagectx = context_course::instance(SITEID);
  77
  78 if ($isfrontpage) {
  79     $PAGE->set_pagelayout('admin');
  80     require_capability('moodle/site:viewparticipants', $systemcontext);
  81 } else {
  82     $PAGE->set_pagelayout('incourse');
  83     require_capability('moodle/course:viewparticipants', $context);
  84 }
  85
  86 $rolenamesurl = new moodle_url("$CFG->wwwroot/user/index.php?contextid=$context->id&sifirst=&silast=");
  87
  88 $rolenames = role_fix_names(get_profile_roles($context), $context, ROLENAME_ALIAS, true);
  89 if ($isfrontpage) {
  90     $rolenames[0] = get_string('allsiteusers', 'role');
  91 } else {
  92     $rolenames[0] = get_string('allparticipants');
  93 }
  94
  95 // Make sure other roles may not be selected by any means.
  96 if (empty($rolenames[$roleid])) {
  97     print_error('noparticipants');
  98 }
  99
 100 // No roles to display yet?
 101 // frontpage course is an exception, on the front page course we should display all users.
 102 if (empty($rolenames) && !$isfrontpage) {
 103     if (has_capability('moodle/role:assign', $context)) {
 104         redirect($CFG->wwwroot.'/'.$CFG->admin.'/roles/assign.php?contextid='.$context->id);
 105     } else {
 106         print_error('noparticipants');
 107     }
 108 }
 109
 110 // Trigger events.
 111 user_list_view($course, $context);
 112
 113 $bulkoperations = has_capability('moodle/course:bulkmessaging', $context);
 114
 115 $countries = get_string_manager()->get_list_of_countries();
 116
 117 $strnever = get_string('never');
 118
 119 $datestring = new stdClass();
 120 $datestring->year  = get_string('year');
 121 $datestring->years = get_string('years');
 122 $datestring->day   = get_string('day');
 123 $datestring->days  = get_string('days');
 124 $datestring->hour  = get_string('hour');
 125 $datestring->hours = get_string('hours');
 126 $datestring->min   = get_string('min');
 127 $datestring->mins  = get_string('mins');
 128 $datestring->sec   = get_string('sec');
 129 $datestring->secs  = get_string('secs');
 130
 131 if ($mode !== null) {
 132     $mode = (int)$mode;
 133     $SESSION->userindexmode = $mode;
 134 } else if (isset($SESSION->userindexmode)) {
 135     $mode = (int)$SESSION->userindexmode;
 136 } else {
 137     $mode = MODE_BRIEF;
 138 }
 139
 140 // Check to see if groups are being used in this course
 141 // and if so, set $currentgroup to reflect the current group.
 142
 143 $groupmode    = groups_get_course_groupmode($course);   // Groups are being used.
 144 $currentgroup = groups_get_course_group($course, true);
 145
 146 if (!$currentgroup) {      // To make some other functions work better later.
 147     $currentgroup  = null;
 148 }
 149
 150 $isseparategroups = ($course->groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context));
 151
 152 $PAGE->set_title("$course->shortname: ".get_string('participants'));
 153 $PAGE->set_heading($course->fullname);
 154 $PAGE->set_pagetype('course-view-' . $course->format);
 155 $PAGE->add_body_class('path-user');                     // So we can style it independently.
 156 $PAGE->set_other_editing_capability('moodle/course:manageactivities');
 157
 158 echo $OUTPUT->header();
 159 echo $OUTPUT->heading(get_string('participants'));
 160
 161 echo '<div class="userlist">';
 162
 163 if ($isseparategroups and (!$currentgroup) ) {
 164     // The user is not in the group so show message and exit.
 165     echo $OUTPUT->heading(get_string("notingroup"));
 166     echo $OUTPUT->footer();
 167     exit;
 168 }
 169
 170
 171 // Should use this variable so that we don't break stuff every time a variable is added or changed.
 172 $baseurl = new moodle_url('/user/index.php', array(
 173         'contextid' => $context->id,
 174         'roleid' => $roleid,
 175         'id' => $course->id,
 176         'perpage' => $perpage,
 177         'accesssince' => $accesssince,
 178         'search' => s($search)));
 179
 180 // Setting up tags.
 181 if ($course->id == SITEID) {
 182     $filtertype = 'site';
 183 } else if ($course->id && !$currentgroup) {
 184     $filtertype = 'course';
 185     $filterselect = $course->id;
 186 } else {
 187     $filtertype = 'group';
 188     $filterselect = $currentgroup;
 189 }
 190
 191
 192
 193 // Get the hidden field list.
 194 if (has_capability('moodle/course:viewhiddenuserfields', $context)) {
 195     $hiddenfields = array();  // Teachers and admins are allowed to see everything.
 196 } else {
 197     $hiddenfields = array_flip(explode(',', $CFG->hiddenuserfields));
 198 }
 199
 200 if (isset($hiddenfields['lastaccess'])) {
 201     // Do not allow access since filtering.
 202     $accesssince = 0;
 203 }
 204
 205 // Print settings and things in a table across the top.
 206 $controlstable = new html_table();
 207 $controlstable->attributes['class'] = 'controls';
 208 $controlstable->cellspacing = 0;
 209 $controlstable->data[] = new html_table_row();
 210
 211 // Print my course menus.
 212 if ($mycourses = enrol_get_my_courses()) {
 213     $courselist = array();
 214     $popupurl = new moodle_url('/user/index.php?roleid='.$roleid.'&sifirst=&silast=');
 215     foreach ($mycourses as $mycourse) {
 216         $coursecontext = context_course::instance($mycourse->id);
 217         $courselist[$mycourse->id] = format_string($mycourse->shortname, true, array('context' => $coursecontext));
 218     }
 219     if (has_capability('moodle/site:viewparticipants', $systemcontext)) {
 220         unset($courselist[SITEID]);
 221         $courselist = array(SITEID => format_string($SITE->shortname, true, array('context' => $systemcontext))) + $courselist;
 222     }
 223     $select = new single_select($popupurl, 'id', $courselist, $course->id, null, 'courseform');
 224     $select->set_label(get_string('mycourses'));
 225     $controlstable->data[0]->cells[] = $OUTPUT->render($select);
 226 }
 227
 228 if ($groupmenu = groups_print_course_menu($course, $baseurl->out(), true)) {
 229     $controlstable->data[0]->cells[] = $groupmenu;
 230 }
 231
 232 if (!isset($hiddenfields['lastaccess'])) {
 233     // Get minimum lastaccess for this course and display a dropbox to filter by lastaccess going back this far.
 234     // We need to make it diferently for normal courses and site course.
 235     if (!$isfrontpage) {
 236         $minlastaccess = $DB->get_field_sql('SELECT min(timeaccess)
 237                                                FROM {user_lastaccess}
 238                                               WHERE courseid = ?
 239                                                     AND timeaccess != 0', array($course->id));
 240         $lastaccess0exists = $DB->record_exists('user_lastaccess', array('courseid' => $course->id, 'timeaccess' => 0));
 241     } else {
 242         $minlastaccess = $DB->get_field_sql('SELECT min(lastaccess)
 243                                                FROM {user}
 244                                               WHERE lastaccess != 0');
 245         $lastaccess0exists = $DB->record_exists('user', array('lastaccess' => 0));
 246     }
 247
 248     $now = usergetmidnight(time());
 249     $timeaccess = array();
 250     $baseurl->remove_params('accesssince');
 251
 252     // Makes sense for this to go first.
 253     $timeoptions[0] = get_string('selectperiod');
 254
 255     // Days.
 256     for ($i = 1; $i < 7; $i++) {
 257         if (strtotime('-'.$i.' days', $now) >= $minlastaccess) {
 258             $timeoptions[strtotime('-'.$i.' days', $now)] = get_string('numdays', 'moodle', $i);
 259         }
 260     }
 261     // Weeks.
 262     for ($i = 1; $i < 10; $i++) {
 263         if (strtotime('-'.$i.' weeks', $now) >= $minlastaccess) {
 264             $timeoptions[strtotime('-'.$i.' weeks', $now)] = get_string('numweeks', 'moodle', $i);
 265         }
 266     }
 267     // Months.
 268     for ($i = 2; $i < 12; $i++) {
 269         if (strtotime('-'.$i.' months', $now) >= $minlastaccess) {
 270             $timeoptions[strtotime('-'.$i.' months', $now)] = get_string('nummonths', 'moodle', $i);
 271         }
 272     }
 273     // Try a year.
 274     if (strtotime('-1 year', $now) >= $minlastaccess) {
 275         $timeoptions[strtotime('-1 year', $now)] = get_string('lastyear');
 276     }
 277
 278     if (!empty($lastaccess0exists)) {
 279         $timeoptions[-1] = get_string('never');
 280     }
 281
 282     if (count($timeoptions) > 1) {
 283         $select = new single_select($baseurl, 'accesssince', $timeoptions, $accesssince, null, 'timeoptions');
 284         $select->set_label(get_string('usersnoaccesssince'));
 285         $controlstable->data[0]->cells[] = $OUTPUT->render($select);
 286     }
 287 }
 288
 289 $formatmenu = array( '0' => get_string('brief'),
 290                      '1' => get_string('userdetails'));
 291 $select = new single_select($baseurl, 'mode', $formatmenu, $mode, null, 'formatmenu');
 292 $select->set_label(get_string('userlist'));
 293 $userlistcell = new html_table_cell();
 294 $userlistcell->attributes['class'] = 'right';
 295 $userlistcell->text = $OUTPUT->render($select);
 296 $controlstable->data[0]->cells[] = $userlistcell;
 297
 298 echo html_writer::table($controlstable);
 299
 300 if ($currentgroup and (!$isseparategroups or has_capability('moodle/site:accessallgroups', $context))) {
 301     // Display info about the group.
 302     if ($group = groups_get_group($currentgroup)) {
 303         if (!empty($group->description) or (!empty($group->picture) and empty($group->hidepicture))) {
 304             $groupinfotable = new html_table();
 305             $groupinfotable->attributes['class'] = 'groupinfobox';
 306             $picturecell = new html_table_cell();
 307             $picturecell->attributes['class'] = 'left side picture';
 308             $picturecell->text = print_group_picture($group, $course->id, true, true, false);
 309
 310             $contentcell = new html_table_cell();
 311             $contentcell->attributes['class'] = 'content';
 312
 313             $contentheading = $group->name;
 314             if (has_capability('moodle/course:managegroups', $context)) {
 315                 $aurl = new moodle_url('/group/group.php', array('id' => $group->id, 'courseid' => $group->courseid));
 316                 $contentheading .= '&nbsp;' . $OUTPUT->action_icon($aurl, new pix_icon('t/edit', get_string('editgroupprofile')));
 317             }
 318
 319             $group->description = file_rewrite_pluginfile_urls($group->description, 'pluginfile.php', $context->id, 'group',
 320                 'description', $group->id);
 321             if (!isset($group->descriptionformat)) {
 322                 $group->descriptionformat = FORMAT_MOODLE;
 323             }
 324             $options = array('overflowdiv' => true);
 325             $formatteddesc = format_text($group->description, $group->descriptionformat, $options);
 326             $contentcell->text = $OUTPUT->heading($contentheading, 3) . $formatteddesc;
 327             $groupinfotable->data[] = new html_table_row(array($picturecell, $contentcell));
 328             echo html_writer::table($groupinfotable);
 329         }
 330     }
 331 }
 332
 333 // Define a table showing a list of users in the current role selection.
 334 $tablecolumns = array();
 335 $tableheaders = array();
 336 if ($bulkoperations && $mode === MODE_BRIEF) {
 337     $tablecolumns[] = 'select';
 338     $tableheaders[] = get_string('select');
 339 }
 340 $tablecolumns[] = 'userpic';
 341 $tablecolumns[] = 'fullname';
 342
 343 $extrafields = get_extra_user_fields($context);
 344 $tableheaders[] = get_string('userpic');
 345 $tableheaders[] = get_string('fullnameuser');
 346
 347 if ($mode === MODE_BRIEF) {
 348     foreach ($extrafields as $field) {
 349         $tablecolumns[] = $field;
 350         $tableheaders[] = get_user_field_name($field);
 351     }
 352 }
 353 if ($mode === MODE_BRIEF && !isset($hiddenfields['city'])) {
 354     $tablecolumns[] = 'city';
 355     $tableheaders[] = get_string('city');
 356 }
 357 if ($mode === MODE_BRIEF && !isset($hiddenfields['country'])) {
 358     $tablecolumns[] = 'country';
 359     $tableheaders[] = get_string('country');
 360 }
 361 if (!isset($hiddenfields['lastaccess'])) {
 362     $tablecolumns[] = 'lastaccess';
 363     if ($course->id == SITEID) {
 364         // Exception case for viewing participants on site home.
 365         $tableheaders[] = get_string('lastsiteaccess');
 366     } else {
 367         $tableheaders[] = get_string('lastcourseaccess');
 368     }
 369 }
 370
 371 if ($bulkoperations && $mode === MODE_USERDETAILS) {
 372     $tablecolumns[] = 'select';
 373     $tableheaders[] = get_string('select');
 374 }
 375
 376 $table = new flexible_table('user-index-participants-'.$course->id);
 377 $table->define_columns($tablecolumns);
 378 $table->define_headers($tableheaders);
 379 $table->define_baseurl($baseurl->out());
 380
 381 if (!isset($hiddenfields['lastaccess'])) {
 382     $table->sortable(true, 'lastaccess', SORT_DESC);
 383 } else {
 384     $table->sortable(true, 'firstname', SORT_ASC);
 385 }
 386
 387 $table->no_sorting('roles');
 388 $table->no_sorting('groups');
 389 $table->no_sorting('groupings');
 390 $table->no_sorting('select');
 391
 392 $table->set_attribute('cellspacing', '0');
 393 $table->set_attribute('id', 'participants');
 394 $table->set_attribute('class', 'generaltable generalbox');
 395
 396 $table->set_control_variables(array(
 397             TABLE_VAR_SORT    => 'ssort',
 398             TABLE_VAR_HIDE    => 'shide',
 399             TABLE_VAR_SHOW    => 'sshow',
 400             TABLE_VAR_IFIRST  => 'sifirst',
 401             TABLE_VAR_ILAST   => 'silast',
 402             TABLE_VAR_PAGE    => 'spage'
 403             ));
 404 $table->setup();
 405
 406 list($esql, $params) = get_enrolled_sql($context, null, $currentgroup, true);
 407 $joins = array("FROM {user} u");
 408 $wheres = array();
 409
 410 $userfields = array('username', 'email', 'city', 'country', 'lang', 'timezone', 'maildisplay');
 411 $mainuserfields = user_picture::fields('u', $userfields);
 412 $extrasql = get_extra_user_fields_sql($context, 'u', '', $userfields);
 413
 414 if ($isfrontpage) {
 415     $select = "SELECT $mainuserfields, u.lastaccess$extrasql";
 416     $joins[] = "JOIN ($esql) e ON e.id = u.id"; // Everybody on the frontpage usually.
 417     if ($accesssince) {
 418         $wheres[] = get_user_lastaccess_sql($accesssince);
 419     }
 420
 421 } else {
 422     $select = "SELECT $mainuserfields, COALESCE(ul.timeaccess, 0) AS lastaccess$extrasql";
 423     $joins[] = "JOIN ($esql) e ON e.id = u.id"; // Course enrolled users only.
 424     $joins[] = "LEFT JOIN {user_lastaccess} ul ON (ul.userid = u.id AND ul.courseid = :courseid)"; // Not everybody accessed course yet.
 425     $params['courseid'] = $course->id;
 426     if ($accesssince) {
 427         $wheres[] = get_course_lastaccess_sql($accesssince);
 428     }
 429 }
 430
 431 // Performance hacks - we preload user contexts together with accounts.
 432 $ccselect = ', ' . context_helper::get_preload_record_columns_sql('ctx');
 433 $ccjoin = "LEFT JOIN {context} ctx ON (ctx.instanceid = u.id AND ctx.contextlevel = :contextlevel)";
 434 $params['contextlevel'] = CONTEXT_USER;
 435 $select .= $ccselect;
 436 $joins[] = $ccjoin;
 437
 438
 439 // Limit list to users with some role only.
 440 if ($roleid) {
 441     // We want to query both the current context and parent contexts.
 442     list($relatedctxsql, $relatedctxparams) = $DB->get_in_or_equal($context->get_parent_context_ids(true), SQL_PARAMS_NAMED, 'relatedctx');
 443
 444     $wheres[] = "u.id IN (SELECT userid FROM {role_assignments} WHERE roleid = :roleid AND contextid $relatedctxsql)";
 445     $params = array_merge($params, array('roleid' => $roleid), $relatedctxparams);
 446 }
 447
 448 $from = implode("\n", $joins);
 449 if ($wheres) {
 450     $where = "WHERE " . implode(" AND ", $wheres);
 451 } else {
 452     $where = "";
 453 }
 454
 455 $totalcount = $DB->count_records_sql("SELECT COUNT(u.id) $from $where", $params);
 456
 457 if (!empty($search)) {
 458     $fullname = $DB->sql_fullname('u.firstname', 'u.lastname');
 459     $wheres[] = "(". $DB->sql_like($fullname, ':search1', false, false) .
 460                 " OR ". $DB->sql_like('email', ':search2', false, false) .
 461                 " OR ". $DB->sql_like('idnumber', ':search3', false, false) .") ";
 462     $params['search1'] = "%$search%";
 463     $params['search2'] = "%$search%";
 464     $params['search3'] = "%$search%";
 465 }
 466
 467 list($twhere, $tparams) = $table->get_sql_where();
 468 if ($twhere) {
 469     $wheres[] = $twhere;
 470     $params = array_merge($params, $tparams);
 471 }
 472
 473 $from = implode("\n", $joins);
 474 if ($wheres) {
 475     $where = "WHERE " . implode(" AND ", $wheres);
 476 } else {
 477     $where = "";
 478 }
 479
 480 if ($table->get_sql_sort()) {
 481     $sort = ' ORDER BY '.$table->get_sql_sort();
 482 } else {
 483     $sort = '';
 484 }
 485
 486 $matchcount = $DB->count_records_sql("SELECT COUNT(u.id) $from $where", $params);
 487
 488 $table->initialbars(true);
 489 $table->pagesize($perpage, $matchcount);
 490
 491 // List of users at the current visible page - paging makes it relatively short.
 492 $userlist = $DB->get_recordset_sql("$select $from $where $sort", $params, $table->get_page_start(), $table->get_page_size());
 493
 494 // If there are multiple Roles in the course, then show a drop down menu for switching.
 495 if (count($rolenames) > 1) {
 496     echo '<div class="rolesform">';
 497     echo $OUTPUT->single_select($rolenamesurl, 'roleid', $rolenames, $roleid, null,
 498         'rolesform', array('label' => get_string('currentrole', 'role')));
 499     echo '</div>';
 500
 501 } else if (count($rolenames) == 1) {
 502     // When all users with the same role - print its name.
 503     echo '<div class="rolesform">';
 504     echo get_string('role').get_string('labelsep', 'langconfig');
 505     $rolename = reset($rolenames);
 506     echo $rolename;
 507     echo '</div>';
 508 }
 509
 510 $editlink = '';
 511 if ($course->id != SITEID && has_capability('moodle/course:enrolreview', $context)) {
 512     $editlink = new moodle_url('/enrol/users.php', array('id' => $course->id));
 513 }
 514
 515 if ($roleid > 0) {
 516     $a = new stdClass();
 517     $a->number = $totalcount;
 518     $a->role = $rolenames[$roleid];
 519     $heading = format_string(get_string('xuserswiththerole', 'role', $a));
 520
 521     if ($currentgroup and !empty($group)) {
 522         $a->group = $group->name;
 523         $heading .= ' ' . format_string(get_string('ingroup', 'role', $a));
 524     }
 525
 526     if ($accesssince && !empty($timeoptions[$accesssince])) {
 527         $a->timeperiod = $timeoptions[$accesssince];
 528         $heading .= ' ' . format_string(get_string('inactiveformorethan', 'role', $a));
 529     }
 530
 531     $heading .= ": $a->number";
 532
 533     if (!empty($editlink)) {
 534         $editlink->param('role', $roleid);
 535         $heading .= $OUTPUT->action_icon($editlink, new pix_icon('t/edit', get_string('edit')));
 536     }
 537     echo $OUTPUT->heading($heading, 3);
 538 } else {
 539     if ($course->id == SITEID and $roleid < 0) {
 540         $strallparticipants = get_string('allsiteusers', 'role');
 541     } else {
 542         $strallparticipants = get_string('allparticipants');
 543     }
 544
 545     if (!empty($editlink)) {
 546         $editlink = $OUTPUT->action_icon($editlink, new pix_icon('t/edit', get_string('edit')));
 547     }
 548
 549     if ($matchcount < $totalcount) {
 550         echo $OUTPUT->heading($strallparticipants.get_string('labelsep', 'langconfig').$matchcount.'/'.$totalcount . $editlink, 3);
 551     } else {
 552         echo $OUTPUT->heading($strallparticipants.get_string('labelsep', 'langconfig').$matchcount . $editlink, 3);
 553     }
 554 }
 555
 556
 557 if ($bulkoperations) {
 558     echo '<form action="action_redir.php" method="post" id="participantsform">';
 559     echo '<div>';
 560     echo '<input type="hidden" name="sesskey" value="'.sesskey().'" />';
 561     echo '<input type="hidden" name="returnto" value="'.s($PAGE->url->out(false)).'" />';
 562 }
 563
 564 if ($mode === MODE_USERDETAILS) {    // Print simple listing.
 565     if ($totalcount < 1) {
 566         echo $OUTPUT->heading(get_string('nothingtodisplay'));
 567     } else {
 568         if ($totalcount > $perpage) {
 569
 570             // Initials bar.
 571             $table->print_initials_bar();
 572
 573             $pagingbar = new paging_bar($matchcount, intval($table->get_page_start() / $perpage), $perpage, $baseurl);
 574             $pagingbar->pagevar = 'spage';
 575             echo $OUTPUT->render($pagingbar);
 576         }
 577
 578         if ($matchcount > 0) {
 579             $usersprinted = array();
 580             foreach ($userlist as $user) {
 581                 if (in_array($user->id, $usersprinted)) { // Prevent duplicates by r.hidden - MDL-13935.
 582                     continue;
 583                 }
 584                 $usersprinted[] = $user->id; // Add new user to the array of users printed.
 585
 586                 context_helper::preload_from_record($user);
 587
 588                 $context = context_course::instance($course->id);
 589                 $usercontext = context_user::instance($user->id);
 590
 591                 $countries = get_string_manager()->get_list_of_countries();
 592
 593                 // Get the hidden field list.
 594                 if (has_capability('moodle/course:viewhiddenuserfields', $context)) {
 595                     $hiddenfields = array();
 596                 } else {
 597                     $hiddenfields = array_flip(explode(',', $CFG->hiddenuserfields));
 598                 }
 599                 $table = new html_table();
 600                 $table->attributes['class'] = 'userinfobox';
 601
 602                 $row = new html_table_row();
 603                 $row->cells[0] = new html_table_cell();
 604                 $row->cells[0]->attributes['class'] = 'left side';
 605
 606                 $row->cells[0]->text = $OUTPUT->user_picture($user, array('size' => 100, 'courseid' => $course->id));
 607                 $row->cells[1] = new html_table_cell();
 608                 $row->cells[1]->attributes['class'] = 'content';
 609
 610                 $row->cells[1]->text = $OUTPUT->container(fullname($user, has_capability('moodle/site:viewfullnames', $context)), 'username');
 611                 $row->cells[1]->text .= $OUTPUT->container_start('info');
 612
 613                 if (!empty($user->role)) {
 614                     $row->cells[1]->text .= get_string('role').get_string('labelsep', 'langconfig').$user->role.'<br />';
 615                 }
 616                 if ($user->maildisplay == 1 or ($user->maildisplay == 2 and ($course->id != SITEID) and !isguestuser()) or
 617                             in_array('email', $extrafields) or ($user->id == $USER->id)) {
 618                     $row->cells[1]->text .= get_string('email').get_string('labelsep', 'langconfig').html_writer::link("mailto:$user->email", $user->email) . '<br />';
 619                 }
 620                 foreach ($extrafields as $field) {
 621                     if ($field === 'email') {
 622                         // Skip email because it was displayed with different logic above
 623                         // because this page is intended for students too.
 624                         continue;
 625                     }
 626                     $row->cells[1]->text .= get_user_field_name($field) .
 627                             get_string('labelsep', 'langconfig') . s($user->{$field}) . '<br />';
 628                 }
 629                 if (($user->city or $user->country) and (!isset($hiddenfields['city']) or !isset($hiddenfields['country']))) {
 630                     $row->cells[1]->text .= get_string('city').get_string('labelsep', 'langconfig');
 631                     if ($user->city && !isset($hiddenfields['city'])) {
 632                         $row->cells[1]->text .= $user->city;
 633                     }
 634                     if (!empty($countries[$user->country]) && !isset($hiddenfields['country'])) {
 635                         if ($user->city && !isset($hiddenfields['city'])) {
 636                             $row->cells[1]->text .= ', ';
 637                         }
 638                         $row->cells[1]->text .= $countries[$user->country];
 639                     }
 640                     $row->cells[1]->text .= '<br />';
 641                 }
 642
 643                 if (!isset($hiddenfields['lastaccess'])) {
 644                     if ($user->lastaccess) {
 645                         $row->cells[1]->text .= get_string('lastaccess').get_string('labelsep', 'langconfig').userdate($user->lastaccess);
 646                         $row->cells[1]->text .= '&nbsp; ('. format_time(time() - $user->lastaccess, $datestring) .')';
 647                     } else {
 648                         $row->cells[1]->text .= get_string('lastaccess').get_string('labelsep', 'langconfig').get_string('never');
 649                     }
 650                 }
 651
 652                 $row->cells[1]->text .= $OUTPUT->container_end();
 653
 654                 $row->cells[2] = new html_table_cell();
 655                 $row->cells[2]->attributes['class'] = 'links';
 656                 $row->cells[2]->text = '';
 657
 658                 $links = array();
 659
 660                 if ($CFG->enableblogs && ($CFG->bloglevel != BLOG_USER_LEVEL || $USER->id == $user->id)) {
 661                     $links[] = html_writer::link(new moodle_url('/blog/index.php?userid='.$user->id), get_string('blogs', 'blog'));
 662                 }
 663
 664                 if (!empty($CFG->enablenotes) and (has_capability('moodle/notes:manage', $context) || has_capability('moodle/notes:view', $context))) {
 665                     $links[] = html_writer::link(new moodle_url('/notes/index.php?course=' . $course->id. '&user='.$user->id), get_string('notes', 'notes'));
 666                 }
 667
 668                 if (has_capability('moodle/site:viewreports', $context) or has_capability('moodle/user:viewuseractivitiesreport', $usercontext)) {
 669                     $links[] = html_writer::link(new moodle_url('/course/user.php?id='. $course->id .'&user='. $user->id), get_string('activity'));
 670                 }
 671
 672                 if ($USER->id != $user->id && !\core\session\manager::is_loggedinas() && has_capability('moodle/user:loginas', $context) && !is_siteadmin($user->id)) {
 673                     $links[] = html_writer::link(new moodle_url('/course/loginas.php?id='. $course->id .'&user='. $user->id .'&sesskey='. sesskey()), get_string('loginas'));
 674                 }
 675
 676                 $links[] = html_writer::link(new moodle_url('/user/view.php?id='. $user->id .'&course='. $course->id), get_string('fullprofile') . '...');
 677
 678                 $row->cells[2]->text .= implode('', $links);
 679
 680                 if ($bulkoperations) {
 681                     if ($selectall) {
 682                         $checked = 'checked="true"';
 683                     } else {
 684                         $checked = '';
 685                     }
 686                     $row->cells[2]->text .= '<br /><input type="checkbox" class="usercheckbox" name="user'.$user->id.'" ' .$checked .'/> ';
 687                 }
 688                 $table->data = array($row);
 689                 echo html_writer::table($table);
 690             }
 691
 692         } else {
 693             echo $OUTPUT->heading(get_string('nothingtodisplay'));
 694         }
 695     }
 696
 697 } else {
 698     $countrysort = (strpos($sort, 'country') !== false);
 699     $timeformat = get_string('strftimedate');
 700
 701
 702     if ($userlist) {
 703
 704         $usersprinted = array();
 705         foreach ($userlist as $user) {
 706             if (in_array($user->id, $usersprinted)) { // Prevent duplicates by r.hidden - MDL-13935.
 707                 continue;
 708             }
 709             $usersprinted[] = $user->id; // Add new user to the array of users printed.
 710
 711             context_helper::preload_from_record($user);
 712
 713             if ($user->lastaccess) {
 714                 $lastaccess = format_time(time() - $user->lastaccess, $datestring);
 715             } else {
 716                 $lastaccess = $strnever;
 717             }
 718
 719             if (empty($user->country)) {
 720                 $country = '';
 721
 722             } else {
 723                 if ($countrysort) {
 724                     $country = '('.$user->country.') '.$countries[$user->country];
 725                 } else {
 726                     $country = $countries[$user->country];
 727                 }
 728             }
 729
 730             $usercontext = context_user::instance($user->id);
 731
 732             if ($piclink = ($USER->id == $user->id || has_capability('moodle/user:viewdetails', $context) || has_capability('moodle/user:viewdetails', $usercontext))) {
 733                 $profilelink = '<strong><a href="'.$CFG->wwwroot.'/user/view.php?id='.$user->id.'&amp;course='.$course->id.'">'.fullname($user).'</a></strong>';
 734             } else {
 735                 $profilelink = '<strong>'.fullname($user).'</strong>';
 736             }
 737
 738             $data = array();
 739             if ($bulkoperations) {
 740                 if ($selectall) {
 741                     $checked = 'checked="true"';
 742                 } else {
 743                     $checked = '';
 744                 }
 745                 $data[] = '<input type="checkbox" class="usercheckbox" name="user'.$user->id.'" ' . $checked .'/>';
 746             }
 747             $data[] = $OUTPUT->user_picture($user, array('size' => 35, 'courseid' => $course->id));
 748             $data[] = $profilelink;
 749
 750             if ($mode === MODE_BRIEF) {
 751                 foreach ($extrafields as $field) {
 752                     $data[] = $user->{$field};
 753                 }
 754             }
 755             if ($mode === MODE_BRIEF && !isset($hiddenfields['city'])) {
 756                 $data[] = $user->city;
 757             }
 758             if ($mode === MODE_BRIEF && !isset($hiddenfields['country'])) {
 759                 $data[] = $country;
 760             }
 761             if (!isset($hiddenfields['lastaccess'])) {
 762                 $data[] = $lastaccess;
 763             }
 764
 765             $table->add_data($data);
 766         }
 767     }
 768
 769     $table->print_html();
 770
 771 }
 772
 773 $perpageurl = clone($baseurl);
 774 $perpageurl->remove_params('perpage');
 775 if ($perpage == SHOW_ALL_PAGE_SIZE) {
 776     $perpageurl->param('perpage', DEFAULT_PAGE_SIZE);
 777     echo $OUTPUT->container(html_writer::link($perpageurl, get_string('showperpage', '', DEFAULT_PAGE_SIZE)), array(), 'showall');
 778
 779 } else if ($matchcount > 0 && $perpage < $matchcount) {
 780     $perpageurl->param('perpage', SHOW_ALL_PAGE_SIZE);
 781     echo $OUTPUT->container(html_writer::link($perpageurl, get_string('showall', '', $matchcount)), array(), 'showall');
 782 }
 783
 784 if ($bulkoperations) {
 785     echo '<br /><div class="buttons">';
 786
 787     if ($matchcount > 0 && $perpage < $matchcount) {
 788         $perpageurl = clone($baseurl);
 789         $perpageurl->remove_params('perpage');
 790         $perpageurl->param('perpage', SHOW_ALL_PAGE_SIZE);
 791         $perpageurl->param('selectall', true);
 792         $showalllink = $perpageurl;
 793     } else {
 794         $showalllink = false;
 795     }
 796
 797     echo html_writer::start_tag('div', array('class' => 'btn-group'));
 798     if ($perpage < $matchcount) {
 799         // Select all users, refresh page showing all users and mark them all selected.
 800         $label = get_string('selectalluserswithcount', 'moodle', $matchcount);
 801         echo html_writer::tag('input', "", array('type' => 'button', 'id' => 'checkall', 'class' => 'btn btn-secondary',
 802                 'value' => $label, 'data-showallink' => $showalllink));
 803         // Select all users, mark all users on page as selected.
 804         echo html_writer::tag('input', "", array('type' => 'button', 'id' => 'checkallonpage', 'class' => 'btn btn-secondary',
 805         'value' => get_string('selectallusersonpage')));
 806     } else {
 807         echo html_writer::tag('input', "", array('type' => 'button', 'id' => 'checkallonpage', 'class' => 'btn btn-secondary',
 808         'value' => get_string('selectall')));
 809     }
 810
 811     echo html_writer::tag('input', "", array('type' => 'button', 'id' => 'checknone', 'class' => 'btn btn-secondary',
 812         'value' => get_string('deselectall')));
 813     echo html_writer::end_tag('div');
 814     $displaylist = array();
 815     $displaylist['messageselect.php'] = get_string('messageselectadd');
 816     if (!empty($CFG->enablenotes) && has_capability('moodle/notes:manage', $context) && $context->id != $frontpagectx->id) {
 817         $displaylist['addnote.php'] = get_string('addnewnote', 'notes');
 818         $displaylist['groupaddnote.php'] = get_string('groupaddnewnote', 'notes');
 819     }
 820
 821     echo $OUTPUT->help_icon('withselectedusers');
 822     echo html_writer::tag('label', get_string("withselectedusers"), array('for' => 'formactionid'));
 823     echo html_writer::select($displaylist, 'formaction', '', array('' => 'choosedots'), array('id' => 'formactionid'));
 824
 825     echo '<input type="hidden" name="id" value="'.$course->id.'" />';
 826     echo '<noscript style="display:inline">';
 827     echo '<div><input type="submit" value="'.get_string('ok').'" /></div>';
 828     echo '</noscript>';
 829     echo '</div></div>';
 830     echo '</form>';
 831
 832     $module = array('name' => 'core_user', 'fullpath' => '/user/module.js');
 833     $PAGE->requires->js_init_call('M.core_user.init_participation', null, false, $module);
 834 }
 835
 836 // Show a search box if all participants don't fit on a single screen.
 837 if ($totalcount > $perpage) {
 838     echo '<form action="index.php" class="searchform"><div><input type="hidden" name="id" value="'.$course->id.'" />';
 839     echo '<label for="search">' . get_string('search', 'search') . ' </label>';
 840     echo '<input type="text" id="search" name="search" value="'.s($search).'" />&nbsp;<input type="submit" value="'.get_string('search').'" /></div></form>'."\n";
 841 }
 842
 843 echo '</div>';  // Userlist.
 844
 845 echo $OUTPUT->footer();
 846
 847 if ($userlist) {
 848     $userlist->close();
 849 }
 850
 851 /**
 852  * Returns SQL that can be used to limit a query to a period where the user last accessed a course..
 853  *
 854  * @param string $accesssince
 855  * @return string
 856  */
 857 function get_course_lastaccess_sql($accesssince='') {
 858     if (empty($accesssince)) {
 859         return '';
 860     }
 861     if ($accesssince == -1) { // Never.
 862         return 'ul.timeaccess = 0';
 863     } else {
 864         return 'ul.timeaccess != 0 AND ul.timeaccess < '.$accesssince;
 865     }
 866 }
 867
 868 /**
 869  * Returns SQL that can be used to limit a query to a period where the user last accessed the system.
 870  *
 871  * @param string $accesssince
 872  * @return string
 873  */
 874 function get_user_lastaccess_sql($accesssince='') {
 875     if (empty($accesssince)) {
 876         return '';
 877     }
 878     if ($accesssince == -1) { // Never.
 879         return 'u.lastaccess = 0';
 880     } else {
 881         return 'u.lastaccess != 0 AND u.lastaccess < '.$accesssince;
 882     }
 883 }