course/modduplicate.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  * Duplicates a given course module
  19  *
  20  * The script backups and restores a single activity as if it was imported
  21  * from the same course, using the default import settings. The newly created
  22  * copy of the activity is then moved right below the original one.
  23  *
  24  * @package    core
  25  * @subpackage course
  26  * @copyright  2011 David Mudrak <david@moodle.com>
  27  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  28  */
  29
  30 require_once(dirname(dirname(__FILE__)) . '/config.php');
  31 require_once($CFG->dirroot . '/backup/util/includes/backup_includes.php');
  32 require_once($CFG->dirroot . '/backup/util/includes/restore_includes.php');
  33 require_once($CFG->libdir . '/filelib.php');
  34
  35 $cmid       = required_param('cmid',    PARAM_INT);
  36 $courseid   = required_param('course',  PARAM_INT);
  37
  38 $course     = $DB->get_record('course', array('id' => $courseid), '*', MUST_EXIST);
  39 $cm         = get_coursemodule_from_id('', $cmid, $course->id, true, MUST_EXIST);
  40 $cmcontext  = get_context_instance(CONTEXT_MODULE, $cm->id);
  41 $context    = get_context_instance(CONTEXT_COURSE, $courseid);
  42 $section    = $DB->get_record('course_sections', array('id' => $cm->section, 'course' => $cm->course));
  43
  44 require_login($course);
  45 require_sesskey();
  46 require_capability('moodle/course:manageactivities', $context);
  47 // Require both target import caps to be able to duplicate, see make_editing_buttons()
  48 require_capability('moodle/backup:backuptargetimport', $context);
  49 require_capability('moodle/restore:restoretargetimport', $context);
  50
  51 $PAGE->set_title(get_string('duplicate'));
  52 $PAGE->set_heading($course->fullname);
  53 $PAGE->set_url(new moodle_url('/course/modduplicate.php', array('cmid' => $cm->id, 'courseid' => $course->id)));
  54 $PAGE->set_pagelayout('incourse');
  55
  56 $output = $PAGE->get_renderer('core', 'backup');
  57
  58 // backup the activity
  59
  60 $bc = new backup_controller(backup::TYPE_1ACTIVITY, $cm->id, backup::FORMAT_MOODLE,
  61         backup::INTERACTIVE_NO, backup::MODE_IMPORT, $USER->id);
  62
  63 $backupid       = $bc->get_backupid();
  64 $backupbasepath = $bc->get_plan()->get_basepath();
  65
  66 $bc->execute_plan();
  67
  68 $bc->destroy();
  69
  70 // restore the backup immediately
  71
  72 $rc = new restore_controller($backupid, $courseid,
  73         backup::INTERACTIVE_NO, backup::MODE_IMPORT, $USER->id, backup::TARGET_CURRENT_ADDING);
  74
  75 if (!$rc->execute_precheck()) {
  76     $precheckresults = $rc->get_precheck_results();
  77     if (is_array($precheckresults) && !empty($precheckresults['errors'])) {
  78         if (empty($CFG->keeptempdirectoriesonbackup)) {
  79             fulldelete($backupbasepath);
  80         }
  81
  82         echo $output->header();
  83         echo $output->precheck_notices($precheckresults);
  84         echo $output->continue_button(new moodle_url('/course/view.php', array('id' => $course->id)));
  85         echo $output->footer();
  86         die();
  87     }
  88 }
  89
  90 $rc->execute_plan();
  91
  92 // now a bit hacky part follows - we try to get the cmid of the newly
  93 // restored copy of the module
  94 $newcmid = null;
  95 $tasks = $rc->get_plan()->get_tasks();
  96 foreach ($tasks as $task) {
  97     if (is_subclass_of($task, 'restore_activity_task')) {
  98         if ($task->get_old_contextid() == $cmcontext->id) {
  99             $newcmid = $task->get_moduleid();
 100             break;
 101         }
 102     }
 103 }
 104
 105 // if we know the cmid of the new course module, let us move it
 106 // right below the original one. otherwise it will stay at the
 107 // end of the section
 108 if ($newcmid) {
 109     $newcm = get_coursemodule_from_id('', $newcmid, $course->id, true, MUST_EXIST);
 110     moveto_module($newcm, $section, $cm);
 111     moveto_module($cm, $section, $newcm);
 112 }
 113
 114 $rc->destroy();
 115
 116 if (empty($CFG->keeptempdirectoriesonbackup)) {
 117     fulldelete($backupbasepath);
 118 }
 119
 120 $a          = new stdClass();
 121 $a->modtype = get_string('modulename', $cm->modname);
 122 $a->modname = format_string($cm->name);
 123
 124 echo $output->header();
 125
 126 if ($newcmid) {
 127     echo $output->confirm(
 128         get_string('duplicatesuccess', 'core', $a),
 129         new single_button(
 130             new moodle_url('/course/modedit.php', array('update' => $newcmid)),
 131             get_string('duplicatecontedit'),
 132             'get'),
 133         new single_button(
 134             new moodle_url('/course/view.php#section-' . $cm->sectionnum, array('id' => $cm->course)),
 135             get_string('duplicatecontcourse'),
 136             'get')
 137     );
 138
 139 } else {
 140     echo $output->notification(get_string('duplicatesuccess', 'core', $a), 'notifysuccess');
 141     echo $output->continue_button(
 142         new moodle_url('/course/view.php#section-' . $cm->sectionnum, array('id' => $course->id))
 143     );
 144 }
 145
 146 echo $output->footer();