user/index.php

   1 <?php
   2
   3 //  Lists all the users within a given course
   4
   5     require_once('../config.php');
   6     require_once($CFG->libdir.'/tablelib.php');
   7     require_once($CFG->libdir.'/filelib.php');
   8
   9     define('USER_SMALL_CLASS', 20);   // Below this is considered small
  10     define('USER_LARGE_CLASS', 200);  // Above this is considered large
  11     define('DEFAULT_PAGE_SIZE', 20);
  12     define('SHOW_ALL_PAGE_SIZE', 5000);
  13     define('MODE_BRIEF', 0);
  14     define('MODE_USERDETAILS', 1);
  15
  16     $page         = optional_param('page', 0, PARAM_INT);                     // which page to show
  17     $perpage      = optional_param('perpage', DEFAULT_PAGE_SIZE, PARAM_INT);  // how many per page
  18     $mode         = optional_param('mode', NULL, PARAM_INT);                  // use the MODE_ constants
  19     $accesssince  = optional_param('accesssince',0,PARAM_INT);                // filter by last access. -1 = never
  20     $search       = optional_param('search','',PARAM_RAW);                    // make sure it is processed with p() or s() when sending to output!
  21     $roleid       = optional_param('roleid', 0, PARAM_INT);                   // optional roleid, 0 means all enrolled users (or all on the frontpage)
  22
  23     $contextid    = optional_param('contextid', 0, PARAM_INT);                // one of this or
  24     $courseid     = optional_param('id', 0, PARAM_INT);                       // this are required
  25
  26     $PAGE->set_url('/user/index.php', array(
  27             'page' => $page,
  28             'perpage' => $perpage,
  29             'mode' => $mode,
  30             'accesssince' => $accesssince,
  31             'search' => $search,
  32             'roleid' => $roleid,
  33             'contextid' => $contextid,
  34             'id' => $courseid));
  35
  36     if ($contextid) {
  37         $context = context::instance_by_id($contextid, MUST_EXIST);
  38         if ($context->contextlevel != CONTEXT_COURSE) {
  39             print_error('invalidcontext');
  40         }
  41         $course = $DB->get_record('course', array('id'=>$context->instanceid), '*', MUST_EXIST);
  42     } else {
  43         $course = $DB->get_record('course', array('id'=>$courseid), '*', MUST_EXIST);
  44         $context = context_course::instance($course->id, MUST_EXIST);
  45     }
  46     // not needed anymore
  47     unset($contextid);
  48     unset($courseid);
  49
  50     require_login($course);
  51
  52     $systemcontext = context_system::instance();
  53     $isfrontpage = ($course->id == SITEID);
  54
  55     $frontpagectx = context_course::instance(SITEID);
  56
  57     if ($isfrontpage) {
  58         $PAGE->set_pagelayout('admin');
  59         require_capability('moodle/site:viewparticipants', $systemcontext);
  60     } else {
  61         $PAGE->set_pagelayout('incourse');
  62         require_capability('moodle/course:viewparticipants', $context);
  63     }
  64
  65     $rolenamesurl = new moodle_url("$CFG->wwwroot/user/index.php?contextid=$context->id&sifirst=&silast=");
  66
  67     $rolenames = role_fix_names(get_profile_roles($context), $context, ROLENAME_ALIAS, true);
  68     if ($isfrontpage) {
  69         $rolenames[0] = get_string('allsiteusers', 'role');
  70     } else {
  71         $rolenames[0] = get_string('allparticipants');
  72     }
  73
  74     // make sure other roles may not be selected by any means
  75     if (empty($rolenames[$roleid])) {
  76         print_error('noparticipants');
  77     }
  78
  79     // no roles to display yet?
  80     // frontpage course is an exception, on the front page course we should display all users
  81     if (empty($rolenames) && !$isfrontpage) {
  82         if (has_capability('moodle/role:assign', $context)) {
  83             redirect($CFG->wwwroot.'/'.$CFG->admin.'/roles/assign.php?contextid='.$context->id);
  84         } else {
  85             print_error('noparticipants');
  86         }
  87     }
  88
  89     add_to_log($course->id, 'user', 'view all', 'index.php?id='.$course->id, '');
  90
  91     $bulkoperations = has_capability('moodle/course:bulkmessaging', $context);
  92
  93     $countries = get_string_manager()->get_list_of_countries();
  94
  95     $strnever = get_string('never');
  96
  97     $datestring = new stdClass();
  98     $datestring->year  = get_string('year');
  99     $datestring->years = get_string('years');
 100     $datestring->day   = get_string('day');
 101     $datestring->days  = get_string('days');
 102     $datestring->hour  = get_string('hour');
 103     $datestring->hours = get_string('hours');
 104     $datestring->min   = get_string('min');
 105     $datestring->mins  = get_string('mins');
 106     $datestring->sec   = get_string('sec');
 107     $datestring->secs  = get_string('secs');
 108
 109     if ($mode !== NULL) {
 110         $mode = (int)$mode;
 111         $SESSION->userindexmode = $mode;
 112     } else if (isset($SESSION->userindexmode)) {
 113         $mode = (int)$SESSION->userindexmode;
 114     } else {
 115         $mode = MODE_BRIEF;
 116     }
 117
 118 /// Check to see if groups are being used in this course
 119 /// and if so, set $currentgroup to reflect the current group
 120
 121     $groupmode    = groups_get_course_groupmode($course);   // Groups are being used
 122     $currentgroup = groups_get_course_group($course, true);
 123
 124     if (!$currentgroup) {      // To make some other functions work better later
 125         $currentgroup  = NULL;
 126     }
 127
 128     $isseparategroups = ($course->groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context));
 129
 130     $PAGE->set_title("$course->shortname: ".get_string('participants'));
 131     $PAGE->set_heading($course->fullname);
 132     $PAGE->set_pagetype('course-view-' . $course->format);
 133     $PAGE->add_body_class('path-user');                     // So we can style it independently
 134     $PAGE->set_other_editing_capability('moodle/course:manageactivities');
 135
 136     echo $OUTPUT->header();
 137
 138     echo '<div class="userlist">';
 139
 140     if ($isseparategroups and (!$currentgroup) ) {
 141         // The user is not in the group so show message and exit
 142         echo $OUTPUT->heading(get_string("notingroup"));
 143         echo $OUTPUT->footer();
 144         exit;
 145     }
 146
 147
 148     // Should use this variable so that we don't break stuff every time a variable is added or changed.
 149     $baseurl = new moodle_url('/user/index.php', array(
 150             'contextid' => $context->id,
 151             'roleid' => $roleid,
 152             'id' => $course->id,
 153             'perpage' => $perpage,
 154             'accesssince' => $accesssince,
 155             'search' => s($search)));
 156
 157 /// setting up tags
 158     if ($course->id == SITEID) {
 159         $filtertype = 'site';
 160     } else if ($course->id && !$currentgroup) {
 161         $filtertype = 'course';
 162         $filterselect = $course->id;
 163     } else {
 164         $filtertype = 'group';
 165         $filterselect = $currentgroup;
 166     }
 167
 168
 169
 170 /// Get the hidden field list
 171     if (has_capability('moodle/course:viewhiddenuserfields', $context)) {
 172         $hiddenfields = array();  // teachers and admins are allowed to see everything
 173     } else {
 174         $hiddenfields = array_flip(explode(',', $CFG->hiddenuserfields));
 175     }
 176
 177     if (isset($hiddenfields['lastaccess'])) {
 178         // do not allow access since filtering
 179         $accesssince = 0;
 180     }
 181
 182 /// Print settings and things in a table across the top
 183     $controlstable = new html_table();
 184     $controlstable->attributes['class'] = 'controls';
 185     $controlstable->cellspacing = 0;
 186     $controlstable->data[] = new html_table_row();
 187
 188 /// Print my course menus
 189     if ($mycourses = enrol_get_my_courses()) {
 190         $courselist = array();
 191         $popupurl = new moodle_url('/user/index.php?roleid='.$roleid.'&sifirst=&silast=');
 192         foreach ($mycourses as $mycourse) {
 193             $coursecontext = context_course::instance($mycourse->id);
 194             $courselist[$mycourse->id] = format_string($mycourse->shortname, true, array('context' => $coursecontext));
 195         }
 196         if (has_capability('moodle/site:viewparticipants', $systemcontext)) {
 197             unset($courselist[SITEID]);
 198             $courselist = array(SITEID => format_string($SITE->shortname, true, array('context' => $systemcontext))) + $courselist;
 199         }
 200         $select = new single_select($popupurl, 'id', $courselist, $course->id, array(''=>'choosedots'), 'courseform');
 201         $select->set_label(get_string('mycourses'));
 202         $controlstable->data[0]->cells[] = $OUTPUT->render($select);
 203     }
 204
 205     $controlstable->data[0]->cells[] = groups_print_course_menu($course, $baseurl->out(), true);
 206
 207     if (!isset($hiddenfields['lastaccess'])) {
 208         // get minimum lastaccess for this course and display a dropbox to filter by lastaccess going back this far.
 209         // we need to make it diferently for normal courses and site course
 210         if (!$isfrontpage) {
 211             $minlastaccess = $DB->get_field_sql('SELECT min(timeaccess)
 212                                                    FROM {user_lastaccess}
 213                                                   WHERE courseid = ?
 214                                                         AND timeaccess != 0', array($course->id));
 215             $lastaccess0exists = $DB->record_exists('user_lastaccess', array('courseid'=>$course->id, 'timeaccess'=>0));
 216         } else {
 217             $minlastaccess = $DB->get_field_sql('SELECT min(lastaccess)
 218                                                    FROM {user}
 219                                                   WHERE lastaccess != 0');
 220             $lastaccess0exists = $DB->record_exists('user', array('lastaccess'=>0));
 221         }
 222
 223         $now = usergetmidnight(time());
 224         $timeaccess = array();
 225         $baseurl->remove_params('accesssince');
 226
 227         // makes sense for this to go first.
 228         $timeoptions[0] = get_string('selectperiod');
 229
 230         // days
 231         for ($i = 1; $i < 7; $i++) {
 232             if (strtotime('-'.$i.' days',$now) >= $minlastaccess) {
 233                 $timeoptions[strtotime('-'.$i.' days',$now)] = get_string('numdays','moodle',$i);
 234             }
 235         }
 236         // weeks
 237         for ($i = 1; $i < 10; $i++) {
 238             if (strtotime('-'.$i.' weeks',$now) >= $minlastaccess) {
 239                 $timeoptions[strtotime('-'.$i.' weeks',$now)] = get_string('numweeks','moodle',$i);
 240             }
 241         }
 242         // months
 243         for ($i = 2; $i < 12; $i++) {
 244             if (strtotime('-'.$i.' months',$now) >= $minlastaccess) {
 245                 $timeoptions[strtotime('-'.$i.' months',$now)] = get_string('nummonths','moodle',$i);
 246             }
 247         }
 248         // try a year
 249         if (strtotime('-1 year',$now) >= $minlastaccess) {
 250             $timeoptions[strtotime('-1 year',$now)] = get_string('lastyear');
 251         }
 252
 253         if (!empty($lastaccess0exists)) {
 254             $timeoptions[-1] = get_string('never');
 255         }
 256
 257         if (count($timeoptions) > 1) {
 258             $select = new single_select($baseurl, 'accesssince', $timeoptions, $accesssince, null, 'timeoptions');
 259             $select->set_label(get_string('usersnoaccesssince'));
 260             $controlstable->data[0]->cells[] = $OUTPUT->render($select);
 261         }
 262     }
 263
 264     $formatmenu = array( '0' => get_string('brief'),
 265                          '1' => get_string('userdetails'));
 266     $select = new single_select($baseurl, 'mode', $formatmenu, $mode, null, 'formatmenu');
 267     $select->set_label(get_string('userlist'));
 268     $userlistcell = new html_table_cell();
 269     $userlistcell->attributes['class'] = 'right';
 270     $userlistcell->text = $OUTPUT->render($select);
 271     $controlstable->data[0]->cells[] = $userlistcell;
 272
 273     echo html_writer::table($controlstable);
 274
 275     if ($currentgroup and (!$isseparategroups or has_capability('moodle/site:accessallgroups', $context))) {    /// Display info about the group
 276         if ($group = groups_get_group($currentgroup)) {
 277             if (!empty($group->description) or (!empty($group->picture) and empty($group->hidepicture))) {
 278                 $groupinfotable = new html_table();
 279                 $groupinfotable->attributes['class'] = 'groupinfobox';
 280                 $picturecell = new html_table_cell();
 281                 $picturecell->attributes['class'] = 'left side picture';
 282                 $picturecell->text = print_group_picture($group, $course->id, true, true, false);
 283
 284                 $contentcell = new html_table_cell();
 285                 $contentcell->attributes['class'] = 'content';
 286
 287                 $contentheading = $group->name;
 288                 if (has_capability('moodle/course:managegroups', $context)) {
 289                     $aurl = new moodle_url('/group/group.php', array('id' => $group->id, 'courseid' => $group->courseid));
 290                     $contentheading .= '&nbsp;' . $OUTPUT->action_icon($aurl, new pix_icon('t/edit', get_string('editgroupprofile')));
 291                 }
 292
 293                 $group->description = file_rewrite_pluginfile_urls($group->description, 'pluginfile.php', $context->id, 'group', 'description', $group->id);
 294                 if (!isset($group->descriptionformat)) {
 295                     $group->descriptionformat = FORMAT_MOODLE;
 296                 }
 297                 $options = array('overflowdiv'=>true);
 298                 $contentcell->text = $OUTPUT->heading($contentheading, 3) . format_text($group->description, $group->descriptionformat, $options);
 299                 $groupinfotable->data[] = new html_table_row(array($picturecell, $contentcell));
 300                 echo html_writer::table($groupinfotable);
 301             }
 302         }
 303     }
 304
 305     /// Define a table showing a list of users in the current role selection
 306     $tablecolumns = array();
 307     $tableheaders = array();
 308     if ($bulkoperations && $mode === MODE_BRIEF) {
 309         $tablecolumns[] = 'select';
 310         $tableheaders[] = get_string('select');
 311     }
 312     $tablecolumns[] = 'userpic';
 313     $tablecolumns[] = 'fullname';
 314
 315     $extrafields = get_extra_user_fields($context);
 316     $tableheaders[] = get_string('userpic');
 317     $tableheaders[] = get_string('fullnameuser');
 318
 319     if ($mode === MODE_BRIEF) {
 320         foreach ($extrafields as $field) {
 321             $tablecolumns[] = $field;
 322             $tableheaders[] = get_user_field_name($field);
 323         }
 324     }
 325     if ($mode === MODE_BRIEF && !isset($hiddenfields['city'])) {
 326         $tablecolumns[] = 'city';
 327         $tableheaders[] = get_string('city');
 328     }
 329     if ($mode === MODE_BRIEF && !isset($hiddenfields['country'])) {
 330         $tablecolumns[] = 'country';
 331         $tableheaders[] = get_string('country');
 332     }
 333     if (!isset($hiddenfields['lastaccess'])) {
 334         $tablecolumns[] = 'lastaccess';
 335         $tableheaders[] = get_string('lastaccess');
 336     }
 337
 338     if ($bulkoperations && $mode === MODE_USERDETAILS) {
 339         $tablecolumns[] = 'select';
 340         $tableheaders[] = get_string('select');
 341     }
 342
 343     $table = new flexible_table('user-index-participants-'.$course->id);
 344     $table->define_columns($tablecolumns);
 345     $table->define_headers($tableheaders);
 346     $table->define_baseurl($baseurl->out());
 347
 348     if (!isset($hiddenfields['lastaccess'])) {
 349         $table->sortable(true, 'lastaccess', SORT_DESC);
 350     } else {
 351         $table->sortable(true, 'firstname', SORT_ASC);
 352     }
 353
 354     $table->no_sorting('roles');
 355     $table->no_sorting('groups');
 356     $table->no_sorting('groupings');
 357     $table->no_sorting('select');
 358
 359     $table->set_attribute('cellspacing', '0');
 360     $table->set_attribute('id', 'participants');
 361     $table->set_attribute('class', 'generaltable generalbox');
 362
 363     $table->set_control_variables(array(
 364                 TABLE_VAR_SORT    => 'ssort',
 365                 TABLE_VAR_HIDE    => 'shide',
 366                 TABLE_VAR_SHOW    => 'sshow',
 367                 TABLE_VAR_IFIRST  => 'sifirst',
 368                 TABLE_VAR_ILAST   => 'silast',
 369                 TABLE_VAR_PAGE    => 'spage'
 370                 ));
 371     $table->setup();
 372
 373     // we are looking for all users with this role assigned in this context or higher
 374     $contextlist = get_related_contexts_string($context);
 375
 376     list($esql, $params) = get_enrolled_sql($context, NULL, $currentgroup, true);
 377     $joins = array("FROM {user} u");
 378     $wheres = array();
 379
 380     $extrasql = get_extra_user_fields_sql($context, 'u', '', array(
 381             'id', 'username', 'firstname', 'lastname', 'email', 'city', 'country',
 382             'picture', 'lang', 'timezone', 'maildisplay', 'imagealt', 'lastaccess'));
 383
 384     if ($isfrontpage) {
 385         $select = "SELECT u.id, u.username, u.firstname, u.lastname,
 386                           u.email, u.city, u.country, u.picture,
 387                           u.lang, u.timezone, u.maildisplay, u.imagealt,
 388                           u.lastaccess$extrasql";
 389         $joins[] = "JOIN ($esql) e ON e.id = u.id"; // everybody on the frontpage usually
 390         if ($accesssince) {
 391             $wheres[] = get_user_lastaccess_sql($accesssince);
 392         }
 393
 394     } else {
 395         $select = "SELECT u.id, u.username, u.firstname, u.lastname,
 396                           u.email, u.city, u.country, u.picture,
 397                           u.lang, u.timezone, u.maildisplay, u.imagealt,
 398                           COALESCE(ul.timeaccess, 0) AS lastaccess$extrasql";
 399         $joins[] = "JOIN ($esql) e ON e.id = u.id"; // course enrolled users only
 400         $joins[] = "LEFT JOIN {user_lastaccess} ul ON (ul.userid = u.id AND ul.courseid = :courseid)"; // not everybody accessed course yet
 401         $params['courseid'] = $course->id;
 402         if ($accesssince) {
 403             $wheres[] = get_course_lastaccess_sql($accesssince);
 404         }
 405     }
 406
 407     // performance hacks - we preload user contexts together with accounts
 408     list($ccselect, $ccjoin) = context_instance_preload_sql('u.id', CONTEXT_USER, 'ctx');
 409     $select .= $ccselect;
 410     $joins[] = $ccjoin;
 411
 412
 413     // limit list to users with some role only
 414     if ($roleid) {
 415         $wheres[] = "u.id IN (SELECT userid FROM {role_assignments} WHERE roleid = :roleid AND contextid $contextlist)";
 416         $params['roleid'] = $roleid;
 417     }
 418
 419     $from = implode("\n", $joins);
 420     if ($wheres) {
 421         $where = "WHERE " . implode(" AND ", $wheres);
 422     } else {
 423         $where = "";
 424     }
 425
 426     $totalcount = $DB->count_records_sql("SELECT COUNT(u.id) $from $where", $params);
 427
 428     if (!empty($search)) {
 429         $fullname = $DB->sql_fullname('u.firstname','u.lastname');
 430         $wheres[] = "(". $DB->sql_like($fullname, ':search1', false, false) .
 431                     " OR ". $DB->sql_like('email', ':search2', false, false) .
 432                     " OR ". $DB->sql_like('idnumber', ':search3', false, false) .") ";
 433         $params['search1'] = "%$search%";
 434         $params['search2'] = "%$search%";
 435         $params['search3'] = "%$search%";
 436     }
 437
 438     list($twhere, $tparams) = $table->get_sql_where();
 439     if ($twhere) {
 440         $wheres[] = $twhere;
 441         $params = array_merge($params, $tparams);
 442     }
 443
 444     $from = implode("\n", $joins);
 445     if ($wheres) {
 446         $where = "WHERE " . implode(" AND ", $wheres);
 447     } else {
 448         $where = "";
 449     }
 450
 451     if ($table->get_sql_sort()) {
 452         $sort = ' ORDER BY '.$table->get_sql_sort();
 453     } else {
 454         $sort = '';
 455     }
 456
 457     $matchcount = $DB->count_records_sql("SELECT COUNT(u.id) $from $where", $params);
 458
 459     $table->initialbars(true);
 460     $table->pagesize($perpage, $matchcount);
 461
 462     // list of users at the current visible page - paging makes it relatively short
 463     $userlist = $DB->get_recordset_sql("$select $from $where $sort", $params, $table->get_page_start(), $table->get_page_size());
 464
 465     /// If there are multiple Roles in the course, then show a drop down menu for switching
 466     if (count($rolenames) > 1) {
 467         echo '<div class="rolesform">';
 468         echo '<label for="rolesform_jump">'.get_string('currentrole', 'role').'&nbsp;</label>';
 469         echo $OUTPUT->single_select($rolenamesurl, 'roleid', $rolenames, $roleid, null, 'rolesform');
 470         echo '</div>';
 471
 472     } else if (count($rolenames) == 1) {
 473         // when all users with the same role - print its name
 474         echo '<div class="rolesform">';
 475         echo get_string('role').get_string('labelsep', 'langconfig');
 476         $rolename = reset($rolenames);
 477         echo $rolename;
 478         echo '</div>';
 479     }
 480
 481     if ($roleid > 0) {
 482         $a = new stdClass();
 483         $a->number = $totalcount;
 484         $a->role = $rolenames[$roleid];
 485         $heading = format_string(get_string('xuserswiththerole', 'role', $a));
 486
 487         if ($currentgroup and $group) {
 488             $a->group = $group->name;
 489             $heading .= ' ' . format_string(get_string('ingroup', 'role', $a));
 490         }
 491
 492         if ($accesssince) {
 493             $a->timeperiod = $timeoptions[$accesssince];
 494             $heading .= ' ' . format_string(get_string('inactiveformorethan', 'role', $a));
 495         }
 496
 497         $heading .= ": $a->number";
 498
 499         if (user_can_assign($context, $roleid)) {
 500             $headingurl = new moodle_url($CFG->wwwroot . '/' . $CFG->admin . '/roles/assign.php',
 501                     array('roleid' => $roleid, 'contextid' => $context->id));
 502             $heading .= $OUTPUT->action_icon($headingurl, new pix_icon('t/edit', get_string('edit')));
 503         }
 504         echo $OUTPUT->heading($heading, 3);
 505     } else {
 506         if ($course->id != SITEID && has_capability('moodle/course:enrolreview', $context)) {
 507             $editlink = $OUTPUT->action_icon(new moodle_url('/enrol/users.php', array('id' => $course->id)),
 508                                              new pix_icon('t/edit', get_string('edit')));
 509         } else {
 510             $editlink = '';
 511         }
 512         if ($course->id == SITEID and $roleid < 0) {
 513             $strallparticipants = get_string('allsiteusers', 'role');
 514         } else {
 515             $strallparticipants = get_string('allparticipants');
 516         }
 517         if ($matchcount < $totalcount) {
 518             echo $OUTPUT->heading($strallparticipants.get_string('labelsep', 'langconfig').$matchcount.'/'.$totalcount . $editlink, 3);
 519         } else {
 520             echo $OUTPUT->heading($strallparticipants.get_string('labelsep', 'langconfig').$matchcount . $editlink, 3);
 521         }
 522     }
 523
 524
 525     if ($bulkoperations) {
 526         echo '<form action="action_redir.php" method="post" id="participantsform">';
 527         echo '<div>';
 528         echo '<input type="hidden" name="sesskey" value="'.sesskey().'" />';
 529         echo '<input type="hidden" name="returnto" value="'.s($PAGE->url->out(false)).'" />';
 530     }
 531
 532     if ($mode === MODE_USERDETAILS) {    // Print simple listing
 533         if ($totalcount < 1) {
 534             echo $OUTPUT->heading(get_string('nothingtodisplay'));
 535         } else {
 536             if ($totalcount > $perpage) {
 537
 538                 $firstinitial = $table->get_initial_first();
 539                 $lastinitial  = $table->get_initial_last();
 540                 $strall = get_string('all');
 541                 $alpha  = explode(',', get_string('alphabet', 'langconfig'));
 542
 543                 // Bar of first initials
 544
 545                 echo '<div class="initialbar firstinitial">'.get_string('firstname').' : ';
 546                 if(!empty($firstinitial)) {
 547                     echo '<a href="'.$baseurl->out().'&amp;sifirst=">'.$strall.'</a>';
 548                 } else {
 549                     echo '<strong>'.$strall.'</strong>';
 550                 }
 551                 foreach ($alpha as $letter) {
 552                     if ($letter == $firstinitial) {
 553                         echo ' <strong>'.$letter.'</strong>';
 554                     } else {
 555                         echo ' <a href="'.$baseurl->out().'&amp;sifirst='.$letter.'">'.$letter.'</a>';
 556                     }
 557                 }
 558                 echo '</div>';
 559
 560                 // Bar of last initials
 561
 562                 echo '<div class="initialbar lastinitial">'.get_string('lastname').' : ';
 563                 if(!empty($lastinitial)) {
 564                     echo '<a href="'.$baseurl->out().'&amp;silast=">'.$strall.'</a>';
 565                 } else {
 566                     echo '<strong>'.$strall.'</strong>';
 567                 }
 568                 foreach ($alpha as $letter) {
 569                     if ($letter == $lastinitial) {
 570                         echo ' <strong>'.$letter.'</strong>';
 571                     } else {
 572                         echo ' <a href="'.$baseurl->out().'&amp;silast='.$letter.'">'.$letter.'</a>';
 573                     }
 574                 }
 575                 echo '</div>';
 576
 577                 $pagingbar = new paging_bar($matchcount, intval($table->get_page_start() / $perpage), $perpage, $baseurl);
 578                 $pagingbar->pagevar = 'spage';
 579                 echo $OUTPUT->render($pagingbar);
 580             }
 581
 582             if ($matchcount > 0) {
 583                 $usersprinted = array();
 584                 foreach ($userlist as $user) {
 585                     if (in_array($user->id, $usersprinted)) { /// Prevent duplicates by r.hidden - MDL-13935
 586                         continue;
 587                     }
 588                     $usersprinted[] = $user->id; /// Add new user to the array of users printed
 589
 590                     context_instance_preload($user);
 591
 592                     $context = context_course::instance($course->id);
 593                     $usercontext = context_user::instance($user->id);
 594
 595                     $countries = get_string_manager()->get_list_of_countries();
 596
 597                     /// Get the hidden field list
 598                     if (has_capability('moodle/course:viewhiddenuserfields', $context)) {
 599                         $hiddenfields = array();
 600                     } else {
 601                         $hiddenfields = array_flip(explode(',', $CFG->hiddenuserfields));
 602                     }
 603                     $table = new html_table();
 604                     $table->attributes['class'] = 'userinfobox';
 605
 606                     $row = new html_table_row();
 607                     $row->cells[0] = new html_table_cell();
 608                     $row->cells[0]->attributes['class'] = 'left side';
 609
 610                     $row->cells[0]->text = $OUTPUT->user_picture($user, array('size' => 100, 'courseid'=>$course->id));
 611                     $row->cells[1] = new html_table_cell();
 612                     $row->cells[1]->attributes['class'] = 'content';
 613
 614                     $row->cells[1]->text = $OUTPUT->container(fullname($user, has_capability('moodle/site:viewfullnames', $context)), 'username');
 615                     $row->cells[1]->text .= $OUTPUT->container_start('info');
 616
 617                     if (!empty($user->role)) {
 618                         $row->cells[1]->text .= get_string('role').get_string('labelsep', 'langconfig').$user->role.'<br />';
 619                     }
 620                     if ($user->maildisplay == 1 or ($user->maildisplay == 2 and ($course->id != SITEID) and !isguestuser()) or
 621                                 has_capability('moodle/course:viewhiddenuserfields', $context) or
 622                                 in_array('email', $extrafields) or ($user->id == $USER->id)) {
 623                         $row->cells[1]->text .= get_string('email').get_string('labelsep', 'langconfig').html_writer::link("mailto:$user->email", $user->email) . '<br />';
 624                     }
 625                     foreach ($extrafields as $field) {
 626                         if ($field === 'email') {
 627                             // Skip email because it was displayed with different
 628                             // logic above (because this page is intended for
 629                             // students too)
 630                             continue;
 631                         }
 632                         $row->cells[1]->text .= get_user_field_name($field) .
 633                                 get_string('labelsep', 'langconfig') . s($user->{$field}) . '<br />';
 634                     }
 635                     if (($user->city or $user->country) and (!isset($hiddenfields['city']) or !isset($hiddenfields['country']))) {
 636                         $row->cells[1]->text .= get_string('city').get_string('labelsep', 'langconfig');
 637                         if ($user->city && !isset($hiddenfields['city'])) {
 638                             $row->cells[1]->text .= $user->city;
 639                         }
 640                         if (!empty($countries[$user->country]) && !isset($hiddenfields['country'])) {
 641                             if ($user->city && !isset($hiddenfields['city'])) {
 642                                 $row->cells[1]->text .= ', ';
 643                             }
 644                             $row->cells[1]->text .= $countries[$user->country];
 645                         }
 646                         $row->cells[1]->text .= '<br />';
 647                     }
 648
 649                     if (!isset($hiddenfields['lastaccess'])) {
 650                         if ($user->lastaccess) {
 651                             $row->cells[1]->text .= get_string('lastaccess').get_string('labelsep', 'langconfig').userdate($user->lastaccess);
 652                             $row->cells[1]->text .= '&nbsp; ('. format_time(time() - $user->lastaccess, $datestring) .')';
 653                         } else {
 654                             $row->cells[1]->text .= get_string('lastaccess').get_string('labelsep', 'langconfig').get_string('never');
 655                         }
 656                     }
 657
 658                     $row->cells[1]->text .= $OUTPUT->container_end();
 659
 660                     $row->cells[2] = new html_table_cell();
 661                     $row->cells[2]->attributes['class'] = 'links';
 662                     $row->cells[2]->text = '';
 663
 664                     $links = array();
 665
 666                     if ($CFG->bloglevel > 0) {
 667                         $links[] = html_writer::link(new moodle_url('/blog/index.php?userid='.$user->id), get_string('blogs','blog'));
 668                     }
 669
 670                     if (!empty($CFG->enablenotes) and (has_capability('moodle/notes:manage', $context) || has_capability('moodle/notes:view', $context))) {
 671                         $links[] = html_writer::link(new moodle_url('/notes/index.php?course=' . $course->id. '&user='.$user->id), get_string('notes','notes'));
 672                     }
 673
 674                     if (has_capability('moodle/site:viewreports', $context) or has_capability('moodle/user:viewuseractivitiesreport', $usercontext)) {
 675                         $links[] = html_writer::link(new moodle_url('/course/user.php?id='. $course->id .'&user='. $user->id), get_string('activity'));
 676                     }
 677
 678                     if ($USER->id != $user->id && !session_is_loggedinas() && has_capability('moodle/user:loginas', $context) && !is_siteadmin($user->id)) {
 679                         $links[] = html_writer::link(new moodle_url('/course/loginas.php?id='. $course->id .'&user='. $user->id .'&sesskey='. sesskey()), get_string('loginas'));
 680                     }
 681
 682                     $links[] = html_writer::link(new moodle_url('/user/view.php?id='. $user->id .'&course='. $course->id), get_string('fullprofile') . '...');
 683
 684                     $row->cells[2]->text .= implode('', $links);
 685
 686                     if ($bulkoperations) {
 687                         $row->cells[2]->text .= '<br /><input type="checkbox" class="usercheckbox" name="user'.$user->id.'" /> ';
 688                     }
 689                     $table->data = array($row);
 690                     echo html_writer::table($table);
 691                 }
 692
 693             } else {
 694                 echo $OUTPUT->heading(get_string('nothingtodisplay'));
 695             }
 696         }
 697
 698     } else {
 699         $countrysort = (strpos($sort, 'country') !== false);
 700         $timeformat = get_string('strftimedate');
 701
 702
 703         if ($userlist)  {
 704
 705             $usersprinted = array();
 706             foreach ($userlist as $user) {
 707                 if (in_array($user->id, $usersprinted)) { /// Prevent duplicates by r.hidden - MDL-13935
 708                     continue;
 709                 }
 710                 $usersprinted[] = $user->id; /// Add new user to the array of users printed
 711
 712                 context_instance_preload($user);
 713
 714                 if ($user->lastaccess) {
 715                     $lastaccess = format_time(time() - $user->lastaccess, $datestring);
 716                 } else {
 717                     $lastaccess = $strnever;
 718                 }
 719
 720                 if (empty($user->country)) {
 721                     $country = '';
 722
 723                 } else {
 724                     if($countrysort) {
 725                         $country = '('.$user->country.') '.$countries[$user->country];
 726                     }
 727                     else {
 728                         $country = $countries[$user->country];
 729                     }
 730                 }
 731
 732                 $usercontext = context_user::instance($user->id);
 733
 734                 if ($piclink = ($USER->id == $user->id || has_capability('moodle/user:viewdetails', $context) || has_capability('moodle/user:viewdetails', $usercontext))) {
 735                     $profilelink = '<strong><a href="'.$CFG->wwwroot.'/user/view.php?id='.$user->id.'&amp;course='.$course->id.'">'.fullname($user).'</a></strong>';
 736                 } else {
 737                     $profilelink = '<strong>'.fullname($user).'</strong>';
 738                 }
 739
 740                 $data = array();
 741                 if ($bulkoperations) {
 742                     $data[] = '<input type="checkbox" class="usercheckbox" name="user'.$user->id.'" />';
 743                 }
 744                 $data[] = $OUTPUT->user_picture($user, array('size' => 35, 'courseid'=>$course->id));
 745                 $data[] = $profilelink;
 746
 747                 if ($mode === MODE_BRIEF) {
 748                     foreach ($extrafields as $field) {
 749                         $data[] = $user->{$field};
 750                     }
 751                 }
 752                 if ($mode === MODE_BRIEF && !isset($hiddenfields['city'])) {
 753                     $data[] = $user->city;
 754                 }
 755                 if ($mode === MODE_BRIEF && !isset($hiddenfields['country'])) {
 756                     $data[] = $country;
 757                 }
 758                 if (!isset($hiddenfields['lastaccess'])) {
 759                     $data[] = $lastaccess;
 760                 }
 761
 762                 if (isset($userlist_extra) && isset($userlist_extra[$user->id])) {
 763                     $ras = $userlist_extra[$user->id]['ra'];
 764                     $rastring = '';
 765                     foreach ($ras AS $key=>$ra) {
 766                         $rolename = $allrolenames[$ra['roleid']] ;
 767                         if ($ra['ctxlevel'] == CONTEXT_COURSECAT) {
 768                             $rastring .= $rolename. ' @ ' . '<a href="'.$CFG->wwwroot.'/course/index.php?categoryid='.$ra['ctxinstanceid'].'">'.s($ra['ccname']).'</a>';
 769                         } elseif ($ra['ctxlevel'] == CONTEXT_SYSTEM) {
 770                             $rastring .= $rolename. ' - ' . get_string('globalrole','role');
 771                         } else {
 772                             $rastring .= $rolename;
 773                         }
 774                     }
 775                     $data[] = $rastring;
 776                     if ($groupmode != 0) {
 777                         // htmlescape with s() and implode the array
 778                         $data[] = implode(', ', array_map('s',$userlist_extra[$user->id]['group']));
 779                         $data[] = implode(', ', array_map('s', $userlist_extra[$user->id]['gping']));
 780                     }
 781                 }
 782
 783                 $table->add_data($data);
 784             }
 785         }
 786
 787         $table->print_html();
 788
 789     }
 790
 791     if ($bulkoperations) {
 792         echo '<br /><div class="buttons">';
 793         echo '<input type="button" id="checkall" value="'.get_string('selectall').'" /> ';
 794         echo '<input type="button" id="checknone" value="'.get_string('deselectall').'" /> ';
 795         $displaylist = array();
 796         $displaylist['messageselect.php'] = get_string('messageselectadd');
 797         if (!empty($CFG->enablenotes) && has_capability('moodle/notes:manage', $context) && $context->id != $frontpagectx->id) {
 798             $displaylist['addnote.php'] = get_string('addnewnote', 'notes');
 799             $displaylist['groupaddnote.php'] = get_string('groupaddnewnote', 'notes');
 800         }
 801
 802         echo $OUTPUT->help_icon('withselectedusers');
 803         echo html_writer::tag('label', get_string("withselectedusers"), array('for'=>'formactionid'));
 804         echo html_writer::select($displaylist, 'formaction', '', array(''=>'choosedots'), array('id'=>'formactionid'));
 805
 806         echo '<input type="hidden" name="id" value="'.$course->id.'" />';
 807         echo '<noscript style="display:inline">';
 808         echo '<div><input type="submit" value="'.get_string('ok').'" /></div>';
 809         echo '</noscript>';
 810         echo '</div></div>';
 811         echo '</form>';
 812
 813         $module = array('name'=>'core_user', 'fullpath'=>'/user/module.js');
 814         $PAGE->requires->js_init_call('M.core_user.init_participation', null, false, $module);
 815     }
 816
 817     if (has_capability('moodle/site:viewparticipants', $context) && $totalcount > ($perpage*3)) {
 818         echo '<form action="index.php" class="searchform"><div><input type="hidden" name="id" value="'.$course->id.'" />';
 819         echo '<label for="search">' . get_string('search', 'search') . ' </label>';
 820         echo '<input type="text" id="search" name="search" value="'.s($search).'" />&nbsp;<input type="submit" value="'.get_string('search').'" /></div></form>'."\n";
 821     }
 822
 823     $perpageurl = clone($baseurl);
 824     $perpageurl->remove_params('perpage');
 825     if ($perpage == SHOW_ALL_PAGE_SIZE) {
 826         $perpageurl->param('perpage', DEFAULT_PAGE_SIZE);
 827         echo $OUTPUT->container(html_writer::link($perpageurl, get_string('showperpage', '', DEFAULT_PAGE_SIZE)), array(), 'showall');
 828
 829     } else if ($matchcount > 0 && $perpage < $matchcount) {
 830         $perpageurl->param('perpage', SHOW_ALL_PAGE_SIZE);
 831         echo $OUTPUT->container(html_writer::link($perpageurl, get_string('showall', '', $matchcount)), array(), 'showall');
 832     }
 833
 834     echo '</div>';  // userlist
 835
 836     echo $OUTPUT->footer();
 837
 838     if ($userlist) {
 839         $userlist->close();
 840     }
 841
 842
 843 function get_course_lastaccess_sql($accesssince='') {
 844     if (empty($accesssince)) {
 845         return '';
 846     }
 847     if ($accesssince == -1) { // never
 848         return 'ul.timeaccess = 0';
 849     } else {
 850         return 'ul.timeaccess != 0 AND ul.timeaccess < '.$accesssince;
 851     }
 852 }
 853
 854 function get_user_lastaccess_sql($accesssince='') {
 855     if (empty($accesssince)) {
 856         return '';
 857     }
 858     if ($accesssince == -1) { // never
 859         return 'u.lastaccess = 0';
 860     } else {
 861         return 'u.lastaccess != 0 AND u.lastaccess < '.$accesssince;
 862     }
 863 }