forked from moodleou/moodle-mod_ouwiki
/
delete.php
141 lines (112 loc) · 5.29 KB
/
delete.php
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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* [Un]Deletes a version of a page then redirects back to the history page
* @copyright © 2008 The Open University
* @author s.marshall@open.ac.uk
* @license http://www.gnu.org/copyleft/gpl.html GNU Public License
* @package ouwiki
*/
require_once(dirname(__FILE__) . '/../../config.php');
require($CFG->dirroot.'/mod/ouwiki/basicpage.php');
$id = required_param('id', PARAM_INT);
$versionid = required_param('version', PARAM_INT);
$pagename = optional_param('page', '', PARAM_TEXT);
$url = new moodle_url('/mod/ouwiki/view.php', array('id' => $id, 'page' => $pagename));
$PAGE->set_url($url);
if ($id) {
if (!$cm = get_coursemodule_from_id('ouwiki', $id)) {
print_error('invalidcoursemodule');
}
// Checking course instance
$course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
if (!$ouwiki = $DB->get_record('ouwiki', array('id' => $cm->instance))) {
print_error('invalidcoursemodule');
}
$PAGE->set_cm($cm);
}
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
$PAGE->set_pagelayout('incourse');
require_course_login($course, true, $cm);
require_capability('mod/ouwiki:deletepage', $context);
// Get the page version to be [un]deleted
$pageversion = ouwiki_get_page_version($subwiki, $pagename, $versionid);
if (!$pageversion) {
print_error('deleteversionerrorversion', 'ouwiki');
}
// Note: No need to confirm deleting/undeleting page version
// Lock page
list($lockok, $lock) = ouwiki_obtain_lock($ouwiki, $pageversion->pageid);
// Set default action
$action = 'delete';
try {
// [Un]Delete page version
if (empty($pageversion->deletedat)) {
// Flag page version as deleted
$DB->set_field('ouwiki_versions', 'deletedat', time(), array('id' => $versionid));
// Check if current version has been deleted
if ($pageversion->versionid == $pageversion->currentversionid) {
// Current version deleted
// Update current version to first undeleted version (or null)
$pageversions = ouwiki_get_page_history($pageversion->pageid, false, 0, 1);
if (($currentpageversion = reset($pageversions))) {
// Page version found, update page current version id
$DB->set_field('ouwiki_pages', 'currentversionid', $currentpageversion->versionid, array('id' => $pageversion->pageid));
} else {
// No page version found, reset page current version id
$DB->set_field('ouwiki_pages', 'currentversionid', null, array('id' => $pageversion->pageid));
}
}
// Update completion status for user
$completion = new completion_info($course);
if($completion->is_enabled($cm) && ($ouwiki->completionpages || $ouwiki->completionedits)) {
$completion->update_state($cm, COMPLETION_INCOMPLETE);
}
} else {
// Flag page version as no longer deleted
$action = 'undelete';
$DB->set_field('ouwiki_versions', 'deletedat', null, array('id' => $versionid));
// Get first undeleted (current) page version (there must be one)
$pageversions = ouwiki_get_page_history($pageversion->pageid, false, 0, 1);
$currentpageversion = reset($pageversions);
if (!$currentpageversion) {
throw new Exception('Error deleting/undeleting ouwiki page version');
}
// Check if version that has been undeleted should be the new current version
if ($pageversion->currentversionid != $currentpageversion->versionid) {
// Set new current version id
$DB->set_field('ouwiki_pages', 'currentversionid', $currentpageversion->versionid, array('id' => $pageversion->pageid));
}
// Update completion status for user
$completion = new completion_info($course);
if ($completion->is_enabled($cm) && ($ouwiki->completionedits || $ouwiki->completionpages)) {
$completion->update_state($cm, COMPLETION_COMPLETE, $pageversion->userid);
}
}
} catch(Exception $e) {
// Unlock page
ouwiki_release_lock($pageversion->pageid);
ouwiki_dberror('Error deleting/undeleting ouwiki page version '.$e);
}
// Unlock page
ouwiki_release_lock($pageversion->pageid);
// Log delete or undelete action
$ouwikiparamsurl = ouwiki_display_wiki_parameters($pagename, $subwiki, $cm, OUWIKI_PARAMS_URL);
add_to_log($course->id, 'ouwiki', 'version'.$action, 'delete.php?'.$ouwikiparamsurl.'&version='.$versionid, '', $cm->id);
$redirecturl = new moodle_url('/mod/ouwiki/history.php');
// Redirect to view what is now the current version
redirect($redirecturl.'?'.$ouwikiparamsurl);
exit;