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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* The main group management user interface.
*
* @copyright 2006 The Open University, N.D.Freear AT open.ac.uk, J.White AT open.ac.uk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @package core_group
*/
require_once('../config.php');
require_once('lib.php');
$courseid = required_param('id', PARAM_INT);
$groupid = optional_param('group', false, PARAM_INT);
$userid = optional_param('user', false, PARAM_INT);
$action = groups_param_action();
// Support either single group= parameter, or array groups[]
if ($groupid) {
$groupids = array($groupid);
} else {
$groupids = optional_param_array('groups', array(), PARAM_INT);
}
$singlegroup = (count($groupids) == 1);
$returnurl = $CFG->wwwroot.'/group/index.php?id='.$courseid;
// Get the course information so we can print the header and
// check the course id is valid
$course = $DB->get_record('course', array('id'=>$courseid), '*', MUST_EXIST);
$url = new moodle_url('/group/index.php', array('id'=>$courseid));
navigation_node::override_active_url($url);
if ($userid) {
$url->param('user', $userid);
}
if ($groupid) {
$url->param('group', $groupid);
}
$PAGE->set_url($url);
// Make sure that the user has permissions to manage groups.
require_login($course);
$context = context_course::instance($course->id);
require_capability('moodle/course:managegroups', $context);
$PAGE->requires->js('/group/clientlib.js', true);
$PAGE->requires->js('/group/module.js', true);
// Check for multiple/no group errors
if (!$singlegroup) {
switch($action) {
case 'ajax_getmembersingroup':
case 'showgroupsettingsform':
case 'showaddmembersform':
case 'updatemembers':
print_error('errorselectone', 'group', $returnurl);
}
}
switch ($action) {
case false: //OK, display form.
break;
case 'ajax_getmembersingroup':
$roles = array();
if ($groupmemberroles = groups_get_members_by_role($groupids[0], $courseid, 'u.id, ' . get_all_user_name_fields(true, 'u'))) {
foreach($groupmemberroles as $roleid=>$roledata) {
$shortroledata = new stdClass();
$shortroledata->name = $roledata->name;
$shortroledata->users = array();
foreach($roledata->users as $member) {
$shortmember = new stdClass();
$shortmember->id = $member->id;
$shortmember->name = fullname($member, true);
$shortroledata->users[] = $shortmember;
}
$roles[] = $shortroledata;
}
}
echo json_encode($roles);
die; // Client side JavaScript takes it from here.
case 'deletegroup':
if (count($groupids) == 0) {
print_error('errorselectsome','group',$returnurl);
}
$groupidlist = implode(',', $groupids);
redirect(new moodle_url('/group/delete.php', array('courseid'=>$courseid, 'groups'=>$groupidlist)));
break;
case 'showcreateorphangroupform':
redirect(new moodle_url('/group/group.php', array('courseid'=>$courseid)));
break;
case 'showautocreategroupsform':
redirect(new moodle_url('/group/autogroup.php', array('courseid'=>$courseid)));
break;
case 'showimportgroups':
redirect(new moodle_url('/group/import.php', array('id'=>$courseid)));
break;
case 'showgroupsettingsform':
redirect(new moodle_url('/group/group.php', array('courseid'=>$courseid, 'id'=>$groupids[0])));
break;
case 'updategroups': //Currently reloading.
break;
case 'removemembers':
break;
case 'showaddmembersform':
redirect(new moodle_url('/group/members.php', array('group'=>$groupids[0])));
break;
case 'updatemembers': //Currently reloading.
break;
default: //ERROR.
print_error('unknowaction', '', $returnurl);
break;
}
// Print the page and form
$strgroups = get_string('groups');
$strparticipants = get_string('participants');
/// Print header
$PAGE->set_title($strgroups);
$PAGE->set_heading($course->fullname);
$PAGE->set_pagelayout('standard');
echo $OUTPUT->header();
// Add tabs
$currenttab = 'groups';
require('tabs.php');
echo $OUTPUT->heading(format_string($course->shortname, true, array('context' => $context)) .' '.$strgroups, 3);
$groups = groups_get_all_groups($courseid);
$selectedname = null;
$preventgroupremoval = array();
// Get list of groups to render.
$groupoptions = array();
if ($groups) {
foreach ($groups as $group) {
$selected = false;
$usercount = $DB->count_records('groups_members', array('groupid' => $group->id));
$groupname = format_string($group->name) . ' (' . $usercount . ')';
if (in_array($group->id, $groupids)) {
$selected = true;
if ($singlegroup) {
// Only keep selected name if there is one group selected.
$selectedname = $groupname;
}
}
if (!empty($group->idnumber) && !has_capability('moodle/course:changeidnumber', $context)) {
$preventgroupremoval[$group->id] = true;
}
$groupoptions[] = (object) [
'value' => $group->id,
'selected' => $selected,
'text' => $groupname
];
}
}
// Get list of group members to render if there is a single selected group.
$members = array();
if ($singlegroup) {
$usernamefields = get_all_user_name_fields(true, 'u');
if ($groupmemberroles = groups_get_members_by_role(reset($groupids), $courseid, 'u.id, ' . $usernamefields)) {
foreach ($groupmemberroles as $roleid => $roledata) {
$users = array();
foreach ($roledata->users as $member) {
$users[] = (object)[
'value' => $member->id,
'text' => fullname($member, true)
];
}
$members[] = (object)[
'role' => s($roledata->name),
'rolemembers' => $users
];
}
}
}
$disableaddedit = !$singlegroup;
$disabledelete = !empty($groupids);
$renderable = new \core_group\output\index_page($courseid, $groupoptions, $selectedname, $members, $disableaddedit, $disabledelete,
$preventgroupremoval);
$output = $PAGE->get_renderer('core_group');
echo $output->render($renderable);
echo $OUTPUT->footer();
/**
* Returns the first button action with the given prefix, taken from
* POST or GET, otherwise returns false.
* @see /lib/moodlelib.php function optional_param().
* @param string $prefix 'act_' as in 'action'.
* @return string The action without the prefix, or false if no action found.
*/
function groups_param_action($prefix = 'act_') {
$action = false;
//($_SERVER['QUERY_STRING'] && preg_match("/$prefix(.+?)=(.+)/", $_SERVER['QUERY_STRING'], $matches)) { //b_(.*?)[&;]{0,1}/
if ($_POST) {
$form_vars = $_POST;
}
elseif ($_GET) {
$form_vars = $_GET;
}
if ($form_vars) {
foreach ($form_vars as $key => $value) {
if (preg_match("/$prefix(.+)/", $key, $matches)) {
$action = $matches[1];
break;
}
}
}
if ($action && !preg_match('/^\w+$/', $action)) {
$action = false;
print_error('unknowaction');
}
///if (debugging()) echo 'Debug: '.$action;
return $action;
}