group/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 /**
  19  * The main group management user interface.
  20  *
  21  * @copyright 2006 The Open University, N.D.Freear AT open.ac.uk, J.White AT open.ac.uk
  22  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  * @package   core_group
  24  */
  25 require_once('../config.php');
  26 require_once('lib.php');
  27
  28 $courseid = required_param('id', PARAM_INT);
  29 $groupid  = optional_param('group', false, PARAM_INT);
  30 $userid   = optional_param('user', false, PARAM_INT);
  31 $action   = groups_param_action();
  32 // Support either single group= parameter, or array groups[]
  33 if ($groupid) {
  34     $groupids = array($groupid);
  35 } else {
  36     $groupids = optional_param_array('groups', array(), PARAM_INT);
  37 }
  38 $singlegroup = (count($groupids) == 1);
  39
  40 $returnurl = $CFG->wwwroot.'/group/index.php?id='.$courseid;
  41
  42 // Get the course information so we can print the header and
  43 // check the course id is valid
  44
  45 $course = $DB->get_record('course', array('id'=>$courseid), '*', MUST_EXIST);
  46
  47 $url = new moodle_url('/group/index.php', array('id'=>$courseid));
  48 navigation_node::override_active_url($url);
  49 if ($userid) {
  50     $url->param('user', $userid);
  51 }
  52 if ($groupid) {
  53     $url->param('group', $groupid);
  54 }
  55 $PAGE->set_url($url);
  56
  57 // Make sure that the user has permissions to manage groups.
  58 require_login($course);
  59
  60 $context = context_course::instance($course->id);
  61 require_capability('moodle/course:managegroups', $context);
  62
  63 $PAGE->requires->js('/group/clientlib.js', true);
  64 $PAGE->requires->js('/group/module.js', true);
  65
  66 // Check for multiple/no group errors
  67 if (!$singlegroup) {
  68     switch($action) {
  69         case 'ajax_getmembersingroup':
  70         case 'showgroupsettingsform':
  71         case 'showaddmembersform':
  72         case 'updatemembers':
  73             print_error('errorselectone', 'group', $returnurl);
  74     }
  75 }
  76
  77 switch ($action) {
  78     case false: //OK, display form.
  79         break;
  80
  81     case 'ajax_getmembersingroup':
  82         $roles = array();
  83
  84         // TODO Does not support custom user profile fields (MDL-70456).
  85         $userfieldsapi = \core_user\fields::for_identity($context, false)->with_userpic();
  86         $userfields = $userfieldsapi->get_sql('u', false, '', '', false)->selects;
  87         $extrafields = $userfieldsapi->get_required_fields([\core_user\fields::PURPOSE_IDENTITY]);
  88         if ($groupmemberroles = groups_get_members_by_role($groupids[0], $courseid,
  89                 'u.id, ' . $userfields)) {
  90
  91             $viewfullnames = has_capability('moodle/site:viewfullnames', $context);
  92
  93             foreach($groupmemberroles as $roleid=>$roledata) {
  94                 $shortroledata = new stdClass();
  95                 $shortroledata->name = $roledata->name;
  96                 $shortroledata->users = array();
  97                 foreach($roledata->users as $member) {
  98                     $shortmember = new stdClass();
  99                     $shortmember->id = $member->id;
 100                     $shortmember->name = fullname($member, $viewfullnames);
 101                     if ($extrafields) {
 102                         $extrafieldsdisplay = [];
 103                         foreach ($extrafields as $field) {
 104                             $extrafieldsdisplay[] = s($member->{$field});
 105                         }
 106                         $shortmember->name .= ' (' . implode(', ', $extrafieldsdisplay) . ')';
 107                     }
 108
 109                     $shortroledata->users[] = $shortmember;
 110                 }
 111                 $roles[] = $shortroledata;
 112             }
 113         }
 114         echo json_encode($roles);
 115         die;  // Client side JavaScript takes it from here.
 116
 117     case 'deletegroup':
 118         if (count($groupids) == 0) {
 119             print_error('errorselectsome','group',$returnurl);
 120         }
 121         $groupidlist = implode(',', $groupids);
 122         redirect(new moodle_url('/group/delete.php', array('courseid'=>$courseid, 'groups'=>$groupidlist)));
 123         break;
 124
 125     case 'showcreateorphangroupform':
 126         redirect(new moodle_url('/group/group.php', array('courseid'=>$courseid)));
 127         break;
 128
 129     case 'showautocreategroupsform':
 130         redirect(new moodle_url('/group/autogroup.php', array('courseid'=>$courseid)));
 131         break;
 132
 133     case 'showimportgroups':
 134         redirect(new moodle_url('/group/import.php', array('id'=>$courseid)));
 135         break;
 136
 137     case 'showgroupsettingsform':
 138         redirect(new moodle_url('/group/group.php', array('courseid'=>$courseid, 'id'=>$groupids[0])));
 139         break;
 140
 141     case 'updategroups': //Currently reloading.
 142         break;
 143
 144     case 'removemembers':
 145         break;
 146
 147     case 'showaddmembersform':
 148         redirect(new moodle_url('/group/members.php', array('group'=>$groupids[0])));
 149         break;
 150
 151     case 'updatemembers': //Currently reloading.
 152         break;
 153
 154     default: //ERROR.
 155         print_error('unknowaction', '', $returnurl);
 156         break;
 157 }
 158
 159 // Print the page and form
 160 $strgroups = get_string('groups');
 161 $strparticipants = get_string('participants');
 162
 163 /// Print header
 164 $PAGE->set_title($strgroups);
 165 $PAGE->set_heading($course->fullname);
 166 $PAGE->set_pagelayout('standard');
 167 echo $OUTPUT->header();
 168
 169 // Add tabs
 170 $currenttab = 'groups';
 171 require('tabs.php');
 172
 173 echo $OUTPUT->heading(format_string($course->shortname, true, array('context' => $context)) .' '.$strgroups, 3);
 174
 175 $groups = groups_get_all_groups($courseid);
 176 $selectedname = null;
 177 $preventgroupremoval = array();
 178
 179 // Get list of groups to render.
 180 $groupoptions = array();
 181 if ($groups) {
 182     foreach ($groups as $group) {
 183         $selected = false;
 184         $usercount = $DB->count_records('groups_members', array('groupid' => $group->id));
 185         $groupname = format_string($group->name) . ' (' . $usercount . ')';
 186         if (in_array($group->id, $groupids)) {
 187             $selected = true;
 188             if ($singlegroup) {
 189                 // Only keep selected name if there is one group selected.
 190                 $selectedname = $groupname;
 191             }
 192         }
 193         if (!empty($group->idnumber) && !has_capability('moodle/course:changeidnumber', $context)) {
 194             $preventgroupremoval[$group->id] = true;
 195         }
 196
 197         $groupoptions[] = (object) [
 198             'value' => $group->id,
 199             'selected' => $selected,
 200             'text' => $groupname
 201         ];
 202     }
 203 }
 204
 205 // Get list of group members to render if there is a single selected group.
 206 $members = array();
 207 if ($singlegroup) {
 208     // TODO Does not support custom user profile fields (MDL-70456).
 209     $userfieldsapi = \core_user\fields::for_identity($context, false)->with_userpic();
 210     $userfields = $userfieldsapi->get_sql('u', false, '', '', false)->selects;
 211     $extrafields = $userfieldsapi->get_required_fields([\core_user\fields::PURPOSE_IDENTITY]);
 212     if ($groupmemberroles = groups_get_members_by_role(reset($groupids), $courseid,
 213             'u.id, ' . $userfields)) {
 214
 215         $viewfullnames = has_capability('moodle/site:viewfullnames', $context);
 216
 217         foreach ($groupmemberroles as $roleid => $roledata) {
 218             $users = array();
 219             foreach ($roledata->users as $member) {
 220                 $shortmember = new stdClass();
 221                 $shortmember->value = $member->id;
 222                 $shortmember->text = fullname($member, $viewfullnames);
 223                 if ($extrafields) {
 224                     $extrafieldsdisplay = [];
 225                     foreach ($extrafields as $field) {
 226                         $extrafieldsdisplay[] = s($member->{$field});
 227                     }
 228                     $shortmember->text .= ' (' . implode(', ', $extrafieldsdisplay) . ')';
 229                 }
 230
 231                 $users[] = $shortmember;
 232             }
 233             $members[] = (object)[
 234                 'role' => s($roledata->name),
 235                 'rolemembers' => $users
 236             ];
 237         }
 238     }
 239 }
 240
 241 $disableaddedit = !$singlegroup;
 242 $disabledelete = !empty($groupids);
 243 $renderable = new \core_group\output\index_page($courseid, $groupoptions, $selectedname, $members, $disableaddedit, $disabledelete,
 244         $preventgroupremoval);
 245 $output = $PAGE->get_renderer('core_group');
 246 echo $output->render($renderable);
 247
 248 echo $OUTPUT->footer();
 249
 250 /**
 251  * Returns the first button action with the given prefix, taken from
 252  * POST or GET, otherwise returns false.
 253  * @see /lib/moodlelib.php function optional_param().
 254  * @param string $prefix 'act_' as in 'action'.
 255  * @return string The action without the prefix, or false if no action found.
 256  */
 257 function groups_param_action($prefix = 'act_') {
 258     $action = false;
 259 //($_SERVER['QUERY_STRING'] && preg_match("/$prefix(.+?)=(.+)/", $_SERVER['QUERY_STRING'], $matches)) { //b_(.*?)[&;]{0,1}/
 260
 261     if ($_POST) {
 262         $form_vars = $_POST;
 263     }
 264     elseif ($_GET) {
 265         $form_vars = $_GET;
 266     }
 267     if ($form_vars) {
 268         foreach ($form_vars as $key => $value) {
 269             if (preg_match("/$prefix(.+)/", $key, $matches)) {
 270                 $action = $matches[1];
 271                 break;
 272             }
 273         }
 274     }
 275     if ($action && !preg_match('/^\w+$/', $action)) {
 276         $action = false;
 277         print_error('unknowaction');
 278     }
 279     ///if (debugging()) echo 'Debug: '.$action;
 280     return $action;
 281 }