admin/courseformats.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  * Allows the admin to enable, disable and uninstall course formats
  19  *
  20  * @package    core_admin
  21  * @copyright  2012 Marina Glancy
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 require_once('../config.php');
  26 require_once($CFG->libdir.'/adminlib.php');
  27 require_once($CFG->libdir.'/pluginlib.php');
  28
  29 $action  = required_param('action', PARAM_ALPHANUMEXT);
  30 $formatname   = required_param('format', PARAM_PLUGIN);
  31 $confirm = optional_param('confirm', 0, PARAM_BOOL);
  32
  33 $syscontext = context_system::instance();
  34 $PAGE->set_url('/admin/courseformats.php');
  35 $PAGE->set_context($syscontext);
  36
  37 require_login();
  38 require_capability('moodle/site:config', $syscontext);
  39 require_sesskey();
  40
  41 $return = new moodle_url('/admin/settings.php', array('section' => 'manageformats'));
  42
  43 $allplugins = plugin_manager::instance()->get_plugins();
  44 $formatplugins = $allplugins['format'];
  45 $sortorder = array_flip(array_keys($formatplugins));
  46
  47 if (!isset($formatplugins[$formatname])) {
  48     print_error('courseformatnotfound', 'error', $return, $formatname);
  49 }
  50
  51 switch ($action) {
  52     case 'disable':
  53         if ($formatplugins[$formatname]->is_enabled()) {
  54             if (get_config('moodlecourse', 'format') === $formatname) {
  55                 print_error('cannotdisableformat', 'error', $return);
  56             }
  57             set_config('disabled', 1, 'format_'. $formatname);
  58         }
  59         break;
  60     case 'enable':
  61         if (!$formatplugins[$formatname]->is_enabled()) {
  62             unset_config('disabled', 'format_'. $formatname);
  63         }
  64         break;
  65     case 'up':
  66         if ($sortorder[$formatname]) {
  67             $currentindex = $sortorder[$formatname];
  68             $seq = array_keys($formatplugins);
  69             $seq[$currentindex] = $seq[$currentindex-1];
  70             $seq[$currentindex-1] = $formatname;
  71             set_config('format_plugins_sortorder', implode(',', $seq));
  72         }
  73         break;
  74     case 'down':
  75         if ($sortorder[$formatname] < count($sortorder)-1) {
  76             $currentindex = $sortorder[$formatname];
  77             $seq = array_keys($formatplugins);
  78             $seq[$currentindex] = $seq[$currentindex+1];
  79             $seq[$currentindex+1] = $formatname;
  80             set_config('format_plugins_sortorder', implode(',', $seq));
  81         }
  82         break;
  83     case 'uninstall':
  84         echo $OUTPUT->header();
  85         echo $OUTPUT->heading(get_string('courseformats', 'moodle'));
  86
  87         $coursecount = $DB->count_records('course', array('format' => $formatname));
  88         if ($coursecount) {
  89             // Check that default format is set. It will be used to convert courses
  90             // using this format
  91             $defaultformat = get_config('moodlecourse', 'format');
  92             $defaultformat = $formatplugins[get_config('moodlecourse', 'format')];
  93             if (!$defaultformat) {
  94                 echo $OUTPUT->error_text(get_string('defaultformatnotset', 'admin'));
  95                 echo $OUTPUT->footer();
  96                 exit;
  97             }
  98         }
  99
 100         $format = $formatplugins[$formatname];
 101         $deleteurl = $format->get_uninstall_url();
 102         if (!$deleteurl) {
 103             // somebody was trying to cheat and type non-existing link
 104             echo $OUTPUT->error_text(get_string('cannotuninstall', 'admin', $format->displayname));
 105             echo $OUTPUT->footer();
 106             exit;
 107         }
 108
 109         if (!$confirm) {
 110             if ($coursecount) {
 111                 $message = get_string('formatuninstallwithcourses', 'admin',
 112                         (object)array('count' => $coursecount, 'format' => $format->displayname,
 113                             'defaultformat' => $defaultformat->displayname));
 114             } else {
 115                 $message = get_string('formatuninstallconfirm', 'admin', $format->displayname);
 116             }
 117             $deleteurl->param('confirm', 1);
 118             echo $OUTPUT->confirm($message, $deleteurl, $return);
 119         } else {
 120             $a = new stdClass();
 121             $a->plugin = $format->displayname;
 122             $a->directory = $format->rootdir;
 123             uninstall_plugin('format', $formatname);
 124             echo $OUTPUT->notification(get_string('formatuninstalled', 'admin', $a), 'notifysuccess');
 125             echo $OUTPUT->continue_button($return);
 126         }
 127
 128         echo $OUTPUT->footer();
 129         exit;
 130 }
 131 redirect($return);