course/delete.php

   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  * Admin-only code to delete a course utterly.
  19  *
  20  * @package core_course
  21  * @copyright 2002 onwards Martin Dougiamas (http://dougiamas.com)
  22  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 define('NO_OUTPUT_BUFFERING', true);
  26
  27 require_once(__DIR__ . '/../config.php');
  28 require_once($CFG->dirroot . '/course/lib.php');
  29 require_once($CFG->dirroot . '/backup/util/includes/backup_includes.php');
  30
  31 $id = required_param('id', PARAM_INT); // Course ID.
  32 $delete = optional_param('delete', '', PARAM_ALPHANUM); // Confirmation hash.
  33
  34 $course = $DB->get_record('course', array('id' => $id), '*', MUST_EXIST);
  35 $coursecontext = context_course::instance($course->id);
  36
  37 require_login();
  38
  39 if ($SITE->id == $course->id || !can_delete_course($id)) {
  40     // Can not delete frontpage or don't have permission to delete the course.
  41     throw new \moodle_exception('cannotdeletecourse');
  42 }
  43
  44 $categorycontext = context_coursecat::instance($course->category);
  45 $PAGE->set_url('/course/delete.php', array('id' => $id));
  46 $PAGE->set_context($categorycontext);
  47 $PAGE->set_pagelayout('admin');
  48 navigation_node::override_active_url(new moodle_url('/course/management.php', array('categoryid'=>$course->category)));
  49
  50 $courseshortname = format_string($course->shortname, true, array('context' => $coursecontext));
  51 $coursefullname = format_string($course->fullname, true, array('context' => $coursecontext));
  52 $categoryurl = new moodle_url('/course/management.php', array('categoryid' => $course->category));
  53
  54 // Check if we've got confirmation.
  55 if ($delete === md5($course->timemodified)) {
  56     // We do - time to delete the course.
  57     require_sesskey();
  58
  59     $strdeletingcourse = get_string("deletingcourse", "", $courseshortname);
  60
  61     $PAGE->navbar->add($strdeletingcourse);
  62     $PAGE->set_title($strdeletingcourse);
  63     $PAGE->set_heading($SITE->fullname);
  64
  65     echo $OUTPUT->header();
  66     echo $OUTPUT->heading($strdeletingcourse);
  67     // This might take a while. Raise the execution time limit.
  68     core_php_time_limit::raise();
  69
  70     // We do this here because it spits out feedback as it goes.
  71     echo $OUTPUT->footer();
  72     echo $OUTPUT->select_element_for_append();
  73
  74     // Preemptively reset the navcache before closing, so it remains the same on shutdown.
  75     navigation_cache::destroy_volatile_caches();
  76     \core\session\manager::write_close();
  77
  78     delete_course($course);
  79     echo $OUTPUT->heading( get_string("deletedcourse", "", $courseshortname) );
  80     // Update course count in categories.
  81     fix_course_sortorder();
  82     echo $OUTPUT->continue_button($categoryurl);
  83     exit; // We must exit here!!!
  84 }
  85
  86 $strdeletecheck = get_string("deletecheck", "", $courseshortname);
  87
  88 $PAGE->navbar->add($strdeletecheck);
  89 $PAGE->set_title($strdeletecheck);
  90 $PAGE->set_heading($SITE->fullname);
  91 echo $OUTPUT->header();
  92
  93 // Only let user delete this course if there is not an async backup in progress.
  94 if (!async_helper::is_async_pending($id, 'course', 'backup')) {
  95     $strdeletecoursecheck = get_string("deletecoursecheck");
  96     $message = "{$strdeletecoursecheck}<br /><br />{$coursefullname} ({$courseshortname})";
  97
  98     $continueurl = new moodle_url('/course/delete.php', array('id' => $course->id, 'delete' => md5($course->timemodified)));
  99     $continuebutton = new single_button($continueurl, get_string('delete'), 'post');
 100     echo $OUTPUT->confirm($message, $continuebutton, $categoryurl);
 101 } else {
 102     // Async backup is pending, don't let user delete course.
 103     echo $OUTPUT->notification(get_string('pendingasyncerror', 'backup'), 'error');
 104     echo $OUTPUT->container(get_string('pendingasyncdeletedetail', 'backup'));
 105     echo $OUTPUT->continue_button($categoryurl);
 106 }
 107
 108 echo $OUTPUT->footer();
 109 exit;