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 * This page handles deleting quiz overrides
19 *
20 * @package    mod_quiz
21 * @copyright  2010 Matt Petro
22 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
23 */
24
25
26require_once(__DIR__ . '/../../config.php');
27require_once($CFG->dirroot.'/mod/quiz/lib.php');
28require_once($CFG->dirroot.'/mod/quiz/locallib.php');
29require_once($CFG->dirroot.'/mod/quiz/override_form.php');
30
31$overrideid = required_param('id', PARAM_INT);
32$confirm = optional_param('confirm', false, PARAM_BOOL);
33
34if (! $override = $DB->get_record('quiz_overrides', array('id' => $overrideid))) {
35    print_error('invalidoverrideid', 'quiz');
36}
37if (! $quiz = $DB->get_record('quiz', array('id' => $override->quiz))) {
38    print_error('invalidcoursemodule');
39}
40if (! $cm = get_coursemodule_from_instance("quiz", $quiz->id, $quiz->course)) {
41    print_error('invalidcoursemodule');
42}
43$course = $DB->get_record('course', array('id'=>$cm->course), '*', MUST_EXIST);
44
45$context = context_module::instance($cm->id);
46
47require_login($course, false, $cm);
48
49// Check the user has the required capabilities to modify an override.
50require_capability('mod/quiz:manageoverrides', $context);
51
52if ($override->groupid) {
53    if (!groups_group_visible($override->groupid, $course, $cm)) {
54        print_error('invalidoverrideid', 'quiz');
55    }
56} else {
57    if (!groups_user_groups_visible($course, $override->userid, $cm)) {
58        print_error('invalidoverrideid', 'quiz');
59    }
60}
61
62$url = new moodle_url('/mod/quiz/overridedelete.php', array('id'=>$override->id));
63$confirmurl = new moodle_url($url, array('id'=>$override->id, 'confirm'=>1));
64$cancelurl = new moodle_url('/mod/quiz/overrides.php', array('cmid'=>$cm->id));
65
66if (!empty($override->userid)) {
67    $cancelurl->param('mode', 'user');
68}
69
70// If confirm is set (PARAM_BOOL) then we have confirmation of intention to delete.
71if ($confirm) {
72    require_sesskey();
73
74    // Set the course module id before calling quiz_delete_override().
75    $quiz->cmid = $cm->id;
76    quiz_delete_override($quiz, $override->id);
77
78    redirect($cancelurl);
79}
80
81// Prepare the page to show the confirmation form.
82$stroverride = get_string('override', 'quiz');
83$title = get_string('deletecheck', null, $stroverride);
84
85$PAGE->set_url($url);
86$PAGE->set_pagelayout('admin');
87$PAGE->navbar->add($title);
88$PAGE->set_title($title);
89$PAGE->set_heading($course->fullname);
90
91echo $OUTPUT->header();
92echo $OUTPUT->heading(format_string($quiz->name, true, array('context' => $context)));
93
94if ($override->groupid) {
95    $group = $DB->get_record('groups', array('id' => $override->groupid), 'id, name');
96    $confirmstr = get_string("overridedeletegroupsure", "quiz", $group->name);
97} else {
98    $namefields = get_all_user_name_fields(true);
99    $user = $DB->get_record('user', array('id' => $override->userid),
100            'id, ' . $namefields);
101    $confirmstr = get_string("overridedeleteusersure", "quiz", fullname($user));
102}
103
104echo $OUTPUT->confirm($confirmstr, $confirmurl, $cancelurl);
105
106echo $OUTPUT->footer();
107