mod/wiki/admin.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  * Delete wiki pages or versions
  20  *
  21  * This will show options for deleting wiki pages or purging page versions
  22  * If user have wiki:managewiki ability then only this page will show delete
  23  * options
  24  *
  25  * @package mod_wiki
  26  * @copyright 2011 Rajesh Taneja
  27  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  28  */
  29
  30 require_once('../../config.php');
  31 require_once($CFG->dirroot . '/mod/wiki/lib.php');
  32 require_once($CFG->dirroot . '/mod/wiki/locallib.php');
  33 require_once($CFG->dirroot . '/mod/wiki/pagelib.php');
  34
  35 $pageid = required_param('pageid', PARAM_INT); // Page ID
  36 $delete = optional_param('delete', 0, PARAM_INT); // ID of the page to be deleted.
  37 $option = optional_param('option', 1, PARAM_INT); // Option ID
  38 $listall = optional_param('listall', 0, PARAM_INT); // list all pages
  39 $toversion = optional_param('toversion', 0, PARAM_INT); // max version to be deleted
  40 $fromversion = optional_param('fromversion', 0, PARAM_INT); // min version to be deleted
  41
  42 if (!$page = wiki_get_page($pageid)) {
  43     throw new \moodle_exception('incorrectpageid', 'wiki');
  44 }
  45 if (!$subwiki = wiki_get_subwiki($page->subwikiid)) {
  46     throw new \moodle_exception('incorrectsubwikiid', 'wiki');
  47 }
  48 if (!$cm = get_coursemodule_from_instance("wiki", $subwiki->wikiid)) {
  49     throw new \moodle_exception('invalidcoursemodule');
  50 }
  51 $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
  52 if (!$wiki = wiki_get_wiki($subwiki->wikiid)) {
  53     throw new \moodle_exception('incorrectwikiid', 'wiki');
  54 }
  55
  56 require_login($course, true, $cm);
  57
  58 if (!wiki_user_can_view($subwiki, $wiki)) {
  59     throw new \moodle_exception('cannotviewpage', 'wiki');
  60 }
  61
  62 $context = context_module::instance($cm->id);
  63 require_capability('mod/wiki:managewiki', $context);
  64
  65 //Delete page if a page ID to delete was supplied
  66 if (!empty($delete) && confirm_sesskey()) {
  67     if ($pageid != $delete) {
  68         // Validate that we are deleting from the same subwiki.
  69         $deletepage = wiki_get_page($delete);
  70         if (!$deletepage || $deletepage->subwikiid != $page->subwikiid) {
  71             throw new \moodle_exception('incorrectsubwikiid', 'wiki');
  72         }
  73     }
  74     wiki_delete_pages($context, $delete, $page->subwikiid);
  75     //when current wiki page is deleted, then redirect user to create that page, as
  76     //current pageid is invalid after deletion.
  77     if ($pageid == $delete) {
  78         $params = array('swid' => $page->subwikiid, 'title' => $page->title);
  79         $url = new moodle_url('/mod/wiki/create.php', $params);
  80         redirect($url);
  81     }
  82 }
  83
  84 //delete version if toversion and fromversion are set.
  85 if (!empty($toversion) && !empty($fromversion) && confirm_sesskey()) {
  86     //make sure all versions should not be deleted...
  87     $versioncount = wiki_count_wiki_page_versions($pageid);
  88     $versioncount -= 1; //ignore version 0
  89     $totalversionstodelete = $toversion - $fromversion;
  90     $totalversionstodelete += 1; //added 1 as toversion should be included
  91
  92     if (($totalversionstodelete >= $versioncount) || ($versioncount <= 1)) {
  93         throw new \moodle_exception('incorrectdeleteversions', 'wiki');
  94     } else {
  95         $versions = array();
  96         for ($i = $fromversion; $i <= $toversion; $i++) {
  97             //Add all version to deletion list which exist
  98             if (wiki_get_wiki_page_version($pageid, $i)) {
  99                 array_push($versions, $i);
 100             }
 101         }
 102         $purgeversions[$pageid] = $versions;
 103         wiki_delete_page_versions($purgeversions, $context);
 104     }
 105 }
 106
 107 //show actual page
 108 $wikipage = new page_wiki_admin($wiki, $subwiki, $cm, 'modulepage');
 109
 110 $wikipage->set_page($page);
 111 $wikipage->print_header();
 112 $wikipage->set_view($option, empty($listall)?true:false);
 113 $wikipage->print_content();
 114
 115 $wikipage->print_footer();