1<?php
2
3// This file is part of Moodle - http://moodle.org/
4//
5// Moodle is free software: you can redistribute it and/or modify
6// it under the terms of the GNU General Public License as published by
7// the Free Software Foundation, either version 3 of the License, or
8// (at your option) any later version.
9//
10// Moodle is distributed in the hope that it will be useful,
11// but WITHOUT ANY WARRANTY; without even the implied warranty of
12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13// GNU General Public License for more details.
14//
15// You should have received a copy of the GNU General Public License
16// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
17
18/**
19 * This file contains all necessary code to view an old version of a page
20 *
21 * @package mod_wiki
22 * @copyright 2009 Marc Alier, Jordi Piguillem marc.alier@upc.edu
23 * @copyright 2009 Universitat Politecnica de Catalunya http://www.upc.edu
24 *
25 * @author Jordi Piguillem
26 * @author Marc Alier
27 * @author David Jimenez
28 * @author Josep Arus
29 * @author Kenneth Riba
30 *
31 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
32 */
33
34require_once('../../config.php');
35
36require_once($CFG->dirroot . '/mod/wiki/lib.php');
37require_once($CFG->dirroot . '/mod/wiki/locallib.php');
38require_once($CFG->dirroot . '/mod/wiki/pagelib.php');
39
40$pageid = required_param('pageid', PARAM_TEXT);
41$versionid = required_param('versionid', PARAM_INT);
42
43if (!$page = wiki_get_page($pageid)) {
44    print_error('incorrectpageid', 'wiki');
45}
46
47if (!$subwiki = wiki_get_subwiki($page->subwikiid)) {
48    print_error('incorrectsubwikiid', 'wiki');
49}
50
51if (!$wiki = wiki_get_wiki($subwiki->wikiid)) {
52    print_error('incorrectwikiid', 'wiki');
53}
54
55if (!$cm = get_coursemodule_from_instance('wiki', $wiki->id)) {
56    print_error('invalidcoursemodule');
57}
58
59$course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
60
61require_course_login($course, true, $cm);
62
63if (!wiki_user_can_view($subwiki, $wiki)) {
64    print_error('cannotviewpage', 'wiki');
65}
66
67$wikipage = new page_wiki_viewversion($wiki, $subwiki, $cm);
68
69$wikipage->set_page($page);
70$wikipage->set_versionid($versionid);
71
72$event = \mod_wiki\event\page_version_viewed::create(
73        array(
74            'context' => context_module::instance($cm->id),
75            'objectid' => $pageid,
76            'other' => array(
77                'versionid' => $versionid
78                )
79            ));
80$event->add_record_snapshot('wiki_pages', $page);
81$event->add_record_snapshot('wiki', $wiki);
82$event->add_record_snapshot('wiki_subwikis', $subwiki);
83$event->trigger();
84
85// Print the page header
86$wikipage->print_header();
87$wikipage->print_content();
88
89$wikipage->print_footer();
90