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 * Delete group
20 *
21 * @package   core_group
22 * @copyright 2008 The Open University, s.marshall AT open.ac.uk
23 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
24 */
25
26require_once('../config.php');
27require_once('lib.php');
28
29// Get and check parameters
30$courseid = required_param('courseid', PARAM_INT);
31$groupids = required_param('groups', PARAM_SEQUENCE);
32$confirm = optional_param('confirm', 0, PARAM_BOOL);
33
34$PAGE->set_url('/group/delete.php', array('courseid'=>$courseid,'groups'=>$groupids));
35$PAGE->set_pagelayout('standard');
36
37// Make sure course is OK and user has access to manage groups
38if (!$course = $DB->get_record('course', array('id' => $courseid))) {
39    print_error('invalidcourseid');
40}
41require_login($course);
42$context = context_course::instance($course->id);
43require_capability('moodle/course:managegroups', $context);
44$changeidnumber = has_capability('moodle/course:changeidnumber', $context);
45
46// Make sure all groups are OK and belong to course
47$groupidarray = explode(',',$groupids);
48$groupnames = array();
49foreach($groupidarray as $groupid) {
50    if (!$group = $DB->get_record('groups', array('id' => $groupid))) {
51        print_error('invalidgroupid');
52    }
53    if (!empty($group->idnumber) && !$changeidnumber) {
54        print_error('grouphasidnumber', '', '', $group->name);
55    }
56    if ($courseid != $group->courseid) {
57        print_error('groupunknown', '', '', $group->courseid);
58    }
59    $groupnames[] = format_string($group->name);
60}
61
62$returnurl='index.php?id='.$course->id;
63
64if(count($groupidarray)==0) {
65    print_error('errorselectsome','group',$returnurl);
66}
67
68if ($confirm && data_submitted()) {
69    if (!confirm_sesskey() ) {
70        print_error('confirmsesskeybad','error',$returnurl);
71    }
72
73    foreach($groupidarray as $groupid) {
74        groups_delete_group($groupid);
75    }
76
77    redirect($returnurl);
78} else {
79    $PAGE->set_title(get_string('deleteselectedgroup', 'group'));
80    $PAGE->set_heading($course->fullname . ': '. get_string('deleteselectedgroup', 'group'));
81    echo $OUTPUT->header();
82    $optionsyes = array('courseid'=>$courseid, 'groups'=>$groupids, 'sesskey'=>sesskey(), 'confirm'=>1);
83    $optionsno = array('id'=>$courseid);
84    if(count($groupnames)==1) {
85        $message=get_string('deletegroupconfirm', 'group', $groupnames[0]);
86    } else {
87        $message=get_string('deletegroupsconfirm', 'group').'<ul>';
88        foreach($groupnames as $groupname) {
89            $message.='<li>'.$groupname.'</li>';
90        }
91        $message.='</ul>';
92    }
93    $formcontinue = new single_button(new moodle_url('delete.php', $optionsyes), get_string('yes'), 'post');
94    $formcancel = new single_button(new moodle_url('index.php', $optionsno), get_string('no'), 'get');
95    echo $OUTPUT->confirm($message, $formcontinue, $formcancel);
96    echo $OUTPUT->footer();
97}
98