mod/wiki/viewversion.php

   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
  34 require_once('../../config.php');
  35
  36 require_once($CFG->dirroot . '/mod/wiki/lib.php');
  37 require_once($CFG->dirroot . '/mod/wiki/locallib.php');
  38 require_once($CFG->dirroot . '/mod/wiki/pagelib.php');
  39
  40 $pageid = required_param('pageid', PARAM_TEXT);
  41 $versionid = required_param('versionid', PARAM_INT);
  42
  43 if (!$page = wiki_get_page($pageid)) {
  44     throw new \moodle_exception('incorrectpageid', 'wiki');
  45 }
  46
  47 if (!$subwiki = wiki_get_subwiki($page->subwikiid)) {
  48     throw new \moodle_exception('incorrectsubwikiid', 'wiki');
  49 }
  50
  51 if (!$wiki = wiki_get_wiki($subwiki->wikiid)) {
  52     throw new \moodle_exception('incorrectwikiid', 'wiki');
  53 }
  54
  55 if (!$cm = get_coursemodule_from_instance('wiki', $wiki->id)) {
  56     throw new \moodle_exception('invalidcoursemodule');
  57 }
  58
  59 $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
  60
  61 require_course_login($course, true, $cm);
  62
  63 if (!wiki_user_can_view($subwiki, $wiki)) {
  64     throw new \moodle_exception('cannotviewpage', 'wiki');
  65 }
  66
  67 $wikipage = new page_wiki_viewversion($wiki, $subwiki, $cm, 'modulepage');
  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();