user/renderer.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  * Provides user rendering functionality such as printing private files tree and displaying a search utility
  19  *
  20  * @package    core_user
  21  * @copyright  2010 Dongsheng Cai <dongsheng@moodle.com>
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 defined('MOODLE_INTERNAL') || die();
  26
  27 /**
  28  * Provides user rendering functionality such as printing private files tree and displaying a search utility
  29  * @copyright  2010 Dongsheng Cai <dongsheng@moodle.com>
  30  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  31  */
  32 class core_user_renderer extends plugin_renderer_base {
  33
  34     /**
  35      * Prints user search utility that can search user by first initial of firstname and/or first initial of lastname
  36      * Prints a header with a title and the number of users found within that subset
  37      * @param string $url the url to return to, complete with any parameters needed for the return
  38      * @param string $firstinitial the first initial of the firstname
  39      * @param string $lastinitial the first initial of the lastname
  40      * @param int $usercount the amount of users meeting the search criteria
  41      * @param int $totalcount the amount of users of the set/subset being searched
  42      * @param string $heading heading of the subset being searched, default is All Participants
  43      * @return string html output
  44      */
  45     public function user_search($url, $firstinitial, $lastinitial, $usercount, $totalcount, $heading = null) {
  46
  47         if ($firstinitial !== 'all') {
  48             set_user_preference('ifirst', $firstinitial);
  49         }
  50         if ($lastinitial !== 'all') {
  51             set_user_preference('ilast', $lastinitial);
  52         }
  53
  54         if (!isset($heading)) {
  55             $heading = get_string('allparticipants');
  56         }
  57
  58         $content = html_writer::start_tag('form', array('action' => new moodle_url($url)));
  59         $content .= html_writer::start_tag('div');
  60
  61         // Search utility heading.
  62         $content .= $this->output->heading($heading.get_string('labelsep', 'langconfig').$usercount.'/'.$totalcount, 3);
  63
  64         // Initials bar.
  65         $prefixfirst = 'sifirst';
  66         $prefixlast = 'silast';
  67         $content .= $this->output->initials_bar($firstinitial, 'firstinitial', get_string('firstname'), $prefixfirst, $url);
  68         $content .= $this->output->initials_bar($lastinitial, 'lastinitial', get_string('lastname'), $prefixlast, $url);
  69
  70         $content .= html_writer::end_tag('div');
  71         $content .= html_writer::tag('div', '&nbsp;');
  72         $content .= html_writer::end_tag('form');
  73
  74         return $content;
  75     }
  76
  77     /**
  78      * Displays the list of tagged users
  79      *
  80      * @param array $userlist
  81      * @param bool $exclusivemode if set to true it means that no other entities tagged with this tag
  82      *             are displayed on the page and the per-page limit may be bigger
  83      * @return string
  84      */
  85     public function user_list($userlist, $exclusivemode) {
  86         $tagfeed = new core_tag\output\tagfeed();
  87         foreach ($userlist as $user) {
  88             $userpicture = $this->output->user_picture($user, array('size' => $exclusivemode ? 100 : 35));
  89             $fullname = fullname($user);
  90             if (user_can_view_profile($user)) {
  91                 $profilelink = new moodle_url('/user/view.php', array('id' => $user->id));
  92                 $fullname = html_writer::link($profilelink, $fullname);
  93             }
  94             $tagfeed->add($userpicture, $fullname);
  95         }
  96
  97         $items = $tagfeed->export_for_template($this->output);
  98
  99         if ($exclusivemode) {
 100             $output = '<div><ul class="inline-list">';
 101             foreach ($items['items'] as $item) {
 102                 $output .= '<li><div class="user-box">'. $item['img'] . $item['heading'] ."</div></li>\n";
 103             }
 104             $output .= "</ul></div>\n";
 105             return $output;
 106         }
 107
 108         return $this->output->render_from_template('core_tag/tagfeed', $items);
 109     }
 110
 111     /**
 112      * Renders the unified filter element for the course participants page.
 113      *
 114      * @param stdClass $course The course object.
 115      * @param context $context The context object.
 116      * @param array $filtersapplied Array of currently applied filters.
 117      * @param string|moodle_url $baseurl The url with params needed to call up this page.
 118      * @return bool|string
 119      */
 120     public function unified_filter($course, $context, $filtersapplied, $baseurl = null) {
 121         global $CFG, $DB, $USER;
 122
 123         require_once($CFG->dirroot . '/enrol/locallib.php');
 124         require_once($CFG->dirroot . '/lib/grouplib.php');
 125         $manager = new course_enrolment_manager($this->page, $course);
 126
 127         $filteroptions = [];
 128
 129         // Filter options for role.
 130         $roleseditable = has_capability('moodle/role:assign', $context);
 131         $roles = get_viewable_roles($context);
 132         if ($roleseditable) {
 133             $roles += get_assignable_roles($context, ROLENAME_ALIAS);
 134         }
 135
 136         $criteria = get_string('role');
 137         $roleoptions = $this->format_filter_option(USER_FILTER_ROLE, $criteria, -1, get_string('noroles', 'role'));
 138         foreach ($roles as $id => $role) {
 139             $roleoptions += $this->format_filter_option(USER_FILTER_ROLE, $criteria, $id, $role);
 140         }
 141         $filteroptions += $roleoptions;
 142
 143         // Filter options for groups, if available.
 144         if (has_capability('moodle/site:accessallgroups', $context) || $course->groupmode != SEPARATEGROUPS) {
 145             // List all groups if the user can access all groups, or we are in visible group mode or no groups mode.
 146             $groups = $manager->get_all_groups();
 147             if (!empty($groups)) {
 148                 // Add 'No group' option, to enable filtering users without any group.
 149                 $nogroup[USERSWITHOUTGROUP] = (object)['name' => get_string('nogroup', 'group')];
 150                 $groups = $nogroup + $groups;
 151             }
 152         } else {
 153             // Otherwise, just list the groups the user belongs to.
 154             $groups = groups_get_all_groups($course->id, $USER->id);
 155         }
 156         $criteria = get_string('group');
 157         $groupoptions = [];
 158         foreach ($groups as $id => $group) {
 159             $groupoptions += $this->format_filter_option(USER_FILTER_GROUP, $criteria, $id, $group->name);
 160         }
 161         $filteroptions += $groupoptions;
 162
 163         $canreviewenrol = has_capability('moodle/course:enrolreview', $context);
 164
 165         // Filter options for status.
 166         if ($canreviewenrol) {
 167             $criteria = get_string('status');
 168             // Add statuses.
 169             $filteroptions += $this->format_filter_option(USER_FILTER_STATUS, $criteria, ENROL_USER_ACTIVE, get_string('active'));
 170             $filteroptions += $this->format_filter_option(USER_FILTER_STATUS, $criteria, ENROL_USER_SUSPENDED,
 171                 get_string('inactive'));
 172         }
 173
 174         // Filter options for enrolment methods.
 175         if ($canreviewenrol && $enrolmentmethods = $manager->get_enrolment_instance_names(true)) {
 176             $criteria = get_string('enrolmentinstances', 'enrol');
 177             $enroloptions = [];
 178             foreach ($enrolmentmethods as $id => $enrolname) {
 179                 $enroloptions += $this->format_filter_option(USER_FILTER_ENROLMENT, $criteria, $id, $enrolname);
 180             }
 181             $filteroptions += $enroloptions;
 182         }
 183
 184         $isfrontpage = ($course->id == SITEID);
 185
 186         // Get the list of fields we have to hide.
 187         $hiddenfields = array();
 188         if (!has_capability('moodle/course:viewhiddenuserfields', $context)) {
 189             $hiddenfields = array_flip(explode(',', $CFG->hiddenuserfields));
 190         }
 191         $haslastaccess = !isset($hiddenfields['lastaccess']);
 192         // Filter options for last access.
 193         if ($haslastaccess) {
 194             // Get minimum lastaccess for this course and display a dropbox to filter by lastaccess going back this far.
 195             // We need to make it diferently for normal courses and site course.
 196             if (!$isfrontpage) {
 197                 $params = ['courseid' => $course->id, 'timeaccess' => 0];
 198                 $select = 'courseid = :courseid AND timeaccess != :timeaccess';
 199                 $minlastaccess = $DB->get_field_select('user_lastaccess', 'MIN(timeaccess)', $select, $params);
 200                 $lastaccess0exists = $DB->record_exists('user_lastaccess', $params);
 201             } else {
 202                 $params = ['lastaccess' => 0];
 203                 $select = 'lastaccess != :lastaccess';
 204                 $minlastaccess = $DB->get_field_select('user', 'MIN(lastaccess)', $select, $params);
 205                 $lastaccess0exists = $DB->record_exists('user', $params);
 206             }
 207             $now = usergetmidnight(time());
 208             $timeoptions = [];
 209             $criteria = get_string('usersnoaccesssince');
 210
 211             // Days.
 212             for ($i = 1; $i < 7; $i++) {
 213                 $timestamp = strtotime('-' . $i . ' days', $now);
 214                 if ($timestamp < $minlastaccess) {
 215                     break;
 216                 }
 217                 $value = get_string('numdays', 'moodle', $i);
 218                 $timeoptions += $this->format_filter_option(USER_FILTER_LAST_ACCESS, $criteria, $timestamp, $value);
 219             }
 220             // Weeks.
 221             for ($i = 1; $i < 10; $i++) {
 222                 $timestamp = strtotime('-'.$i.' weeks', $now);
 223                 if ($timestamp < $minlastaccess) {
 224                     break;
 225                 }
 226                 $value = get_string('numweeks', 'moodle', $i);
 227                 $timeoptions += $this->format_filter_option(USER_FILTER_LAST_ACCESS, $criteria, $timestamp, $value);
 228             }
 229             // Months.
 230             for ($i = 2; $i < 12; $i++) {
 231                 $timestamp = strtotime('-'.$i.' months', $now);
 232                 if ($timestamp < $minlastaccess) {
 233                     break;
 234                 }
 235                 $value = get_string('nummonths', 'moodle', $i);
 236                 $timeoptions += $this->format_filter_option(USER_FILTER_LAST_ACCESS, $criteria, $timestamp, $value);
 237             }
 238             // Try a year.
 239             $timestamp = strtotime('-1 year', $now);
 240             if ($timestamp >= $minlastaccess) {
 241                 $value = get_string('numyear', 'moodle', 1);
 242                 $timeoptions += $this->format_filter_option(USER_FILTER_LAST_ACCESS, $criteria, $timestamp, $value);
 243             }
 244             if (!empty($lastaccess0exists)) {
 245                 $value = get_string('never', 'moodle');
 246                 $timeoptions += $this->format_filter_option(USER_FILTER_LAST_ACCESS, $criteria, $timestamp, $value);
 247             }
 248             if (count($timeoptions) > 1) {
 249                 $filteroptions += $timeoptions;
 250             }
 251         }
 252
 253         // Add missing applied filters to the filter options.
 254         $filteroptions = $this->handle_missing_applied_filters($filtersapplied, $filteroptions);
 255
 256         $indexpage = new \core_user\output\unified_filter($filteroptions, $filtersapplied, $baseurl);
 257         $context = $indexpage->export_for_template($this->output);
 258
 259         return $this->output->render_from_template('core_user/unified_filter', $context);
 260     }
 261
 262     /**
 263      * Returns a formatted filter option.
 264      *
 265      * @param int $filtertype The filter type (e.g. status, role, group, enrolment, last access).
 266      * @param string $criteria The string label of the filter type.
 267      * @param int $value The value for the filter option.
 268      * @param string $label The string representation of the filter option's value.
 269      * @return array The formatted option with the ['filtertype:value' => 'criteria: label'] format.
 270      */
 271     protected function format_filter_option($filtertype, $criteria, $value, $label) {
 272         $optionlabel = get_string('filteroption', 'moodle', (object)['criteria' => $criteria, 'value' => $label]);
 273         $optionvalue = "$filtertype:$value";
 274         return [$optionvalue => $optionlabel];
 275     }
 276
 277     /**
 278      * Handles cases when after reloading the applied filters are missing in the filter options.
 279      *
 280      * @param array $filtersapplied The applied filters.
 281      * @param array $filteroptions The filter options.
 282      * @return array The formatted options with the ['filtertype:value' => 'criteria: label'] format.
 283      */
 284     private function handle_missing_applied_filters($filtersapplied, $filteroptions) {
 285         global $DB;
 286
 287         foreach ($filtersapplied as $filter) {
 288             if (!array_key_exists($filter, $filteroptions)) {
 289                 $filtervalue = explode(':', $filter);
 290                 if (count($filtervalue) !== 2) {
 291                     continue;
 292                 }
 293                 $key = $filtervalue[0];
 294                 $value = $filtervalue[1];
 295
 296                 switch($key) {
 297                     case USER_FILTER_LAST_ACCESS:
 298                         $now = usergetmidnight(time());
 299                         $criteria = get_string('usersnoaccesssince');
 300                         // Days.
 301                         for ($i = 1; $i < 7; $i++) {
 302                             $timestamp = strtotime('-' . $i . ' days', $now);
 303                             if ($timestamp < $value) {
 304                                 break;
 305                             }
 306                             $val = get_string('numdays', 'moodle', $i);
 307                             $filteroptions += $this->format_filter_option(USER_FILTER_LAST_ACCESS, $criteria, $timestamp, $val);
 308                         }
 309                         // Weeks.
 310                         for ($i = 1; $i < 10; $i++) {
 311                             $timestamp = strtotime('-'.$i.' weeks', $now);
 312                             if ($timestamp < $value) {
 313                                 break;
 314                             }
 315                             $val = get_string('numweeks', 'moodle', $i);
 316                             $filteroptions += $this->format_filter_option(USER_FILTER_LAST_ACCESS, $criteria, $timestamp, $val);
 317                         }
 318                         // Months.
 319                         for ($i = 2; $i < 12; $i++) {
 320                             $timestamp = strtotime('-'.$i.' months', $now);
 321                             if ($timestamp < $value) {
 322                                 break;
 323                             }
 324                             $val = get_string('nummonths', 'moodle', $i);
 325                             $filteroptions += $this->format_filter_option(USER_FILTER_LAST_ACCESS, $criteria, $timestamp, $val);
 326                         }
 327                         // Try a year.
 328                         $timestamp = strtotime('-1 year', $now);
 329                         if ($timestamp >= $value) {
 330                             $val = get_string('numyear', 'moodle', 1);
 331                             $filteroptions += $this->format_filter_option(USER_FILTER_LAST_ACCESS, $criteria, $timestamp, $val);
 332                         }
 333                         break;
 334                     case USER_FILTER_ROLE:
 335                         $criteria = get_string('role');
 336                         if ($role = $DB->get_record('role', array('id' => $value))) {
 337                             $role = role_get_name($role);
 338                             $filteroptions += $this->format_filter_option(USER_FILTER_ROLE, $criteria, $value, $role);
 339                         }
 340                         break;
 341                 }
 342             }
 343         }
 344         return $filteroptions;
 345     }
 346 }