course/rest.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  * Provide interface for topics AJAX course formats
  20  *
  21  * @copyright 1999 Martin Dougiamas  http://dougiamas.com
  22  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  * @package course
  24  */
  25
  26 if (!defined('AJAX_SCRIPT')) {
  27     define('AJAX_SCRIPT', true);
  28 }
  29 require_once(dirname(__FILE__) . '/../config.php');
  30 require_once($CFG->dirroot.'/course/lib.php');
  31
  32 // Initialise ALL the incoming parameters here, up front.
  33 $courseid   = required_param('courseId', PARAM_INT);
  34 $class      = required_param('class', PARAM_ALPHA);
  35 $field      = optional_param('field', '', PARAM_ALPHA);
  36 $instanceid = optional_param('instanceId', 0, PARAM_INT);
  37 $sectionid  = optional_param('sectionId', 0, PARAM_INT);
  38 $beforeid   = optional_param('beforeId', 0, PARAM_INT);
  39 $value      = optional_param('value', 0, PARAM_INT);
  40 $column     = optional_param('column', 0, PARAM_ALPHA);
  41 $id         = optional_param('id', 0, PARAM_INT);
  42 $summary    = optional_param('summary', '', PARAM_RAW);
  43 $sequence   = optional_param('sequence', '', PARAM_SEQUENCE);
  44 $visible    = optional_param('visible', 0, PARAM_INT);
  45 $pageaction = optional_param('action', '', PARAM_ALPHA); // Used to simulate a DELETE command
  46 $title      = optional_param('title', '', PARAM_TEXT);
  47
  48 $PAGE->set_url('/course/rest.php', array('courseId'=>$courseid,'class'=>$class));
  49
  50 //NOTE: when making any changes here please make sure it is using the same access control as course/mod.php !!
  51
  52 $course = $DB->get_record('course', array('id' => $courseid), '*', MUST_EXIST);
  53 // Check user is logged in and set contexts if we are dealing with resource
  54 if (in_array($class, array('resource'))) {
  55     $cm = get_coursemodule_from_id(null, $id, $course->id, false, MUST_EXIST);
  56     require_login($course, false, $cm);
  57     $modcontext = context_module::instance($cm->id);
  58 } else {
  59     require_login($course);
  60 }
  61 $coursecontext = context_course::instance($course->id);
  62 require_sesskey();
  63
  64 echo $OUTPUT->header(); // send headers
  65
  66 // OK, now let's process the parameters and do stuff
  67 // MDL-10221 the DELETE method is not allowed on some web servers, so we simulate it with the action URL param
  68 $requestmethod = $_SERVER['REQUEST_METHOD'];
  69 if ($pageaction == 'DELETE') {
  70     $requestmethod = 'DELETE';
  71 }
  72
  73 switch($requestmethod) {
  74     case 'POST':
  75
  76         switch ($class) {
  77             case 'section':
  78
  79                 if (!$DB->record_exists('course_sections', array('course'=>$course->id, 'section'=>$id))) {
  80                     throw new moodle_exception('AJAX commands.php: Bad Section ID '.$id);
  81                 }
  82
  83                 switch ($field) {
  84                     case 'visible':
  85                         require_capability('moodle/course:sectionvisibility', $coursecontext);
  86                         $resourcestotoggle = set_section_visible($course->id, $id, $value);
  87                         echo json_encode(array('resourcestotoggle' => $resourcestotoggle));
  88                         break;
  89
  90                     case 'move':
  91                         require_capability('moodle/course:movesections', $coursecontext);
  92                         move_section_to($course, $id, $value);
  93                         // See if format wants to do something about it
  94                         $response = course_get_format($course)->ajax_section_move();
  95                         if ($response !== null) {
  96                             echo json_encode($response);
  97                         }
  98                         break;
  99                 }
 100                 break;
 101
 102             case 'resource':
 103                 switch ($field) {
 104                     case 'visible':
 105                         require_capability('moodle/course:activityvisibility', $modcontext);
 106                         set_coursemodule_visible($cm->id, $value);
 107                         \core\event\course_module_updated::create_from_cm($cm, $modcontext)->trigger();
 108                         break;
 109
 110                     case 'duplicate':
 111                         require_capability('moodle/course:manageactivities', $coursecontext);
 112                         require_capability('moodle/backup:backuptargetimport', $coursecontext);
 113                         require_capability('moodle/restore:restoretargetimport', $coursecontext);
 114                         if (!course_allowed_module($course, $cm->modname)) {
 115                             throw new moodle_exception('No permission to create that activity');
 116                         }
 117                         $sr = optional_param('sr', null, PARAM_INT);
 118                         $result = mod_duplicate_activity($course, $cm, $sr);
 119                         echo json_encode($result);
 120                         break;
 121
 122                     case 'groupmode':
 123                         require_capability('moodle/course:manageactivities', $modcontext);
 124                         set_coursemodule_groupmode($cm->id, $value);
 125                         \core\event\course_module_updated::create_from_cm($cm, $modcontext)->trigger();
 126                         break;
 127
 128                     case 'indent':
 129                         require_capability('moodle/course:manageactivities', $modcontext);
 130                         $cm->indent = $value;
 131                         if ($cm->indent >= 0) {
 132                             $DB->update_record('course_modules', $cm);
 133                             rebuild_course_cache($cm->course);
 134                         }
 135                         break;
 136
 137                     case 'move':
 138                         require_capability('moodle/course:manageactivities', $modcontext);
 139                         if (!$section = $DB->get_record('course_sections', array('course'=>$course->id, 'section'=>$sectionid))) {
 140                             throw new moodle_exception('AJAX commands.php: Bad section ID '.$sectionid);
 141                         }
 142
 143                         if ($beforeid > 0){
 144                             $beforemod = get_coursemodule_from_id('', $beforeid, $course->id);
 145                             $beforemod = $DB->get_record('course_modules', array('id'=>$beforeid));
 146                         } else {
 147                             $beforemod = NULL;
 148                         }
 149
 150                         $isvisible = moveto_module($cm, $section, $beforemod);
 151                         echo json_encode(array('visible' => (bool) $isvisible));
 152                         break;
 153                     case 'gettitle':
 154                         require_capability('moodle/course:manageactivities', $modcontext);
 155                         $cm = get_coursemodule_from_id('', $id, 0, false, MUST_EXIST);
 156                         $module = new stdClass();
 157                         $module->id = $cm->instance;
 158
 159                         // Don't pass edit strings through multilang filters - we need the entire string
 160                         echo json_encode(array('instancename' => $cm->name));
 161                         break;
 162                     case 'updatetitle':
 163                         require_capability('moodle/course:manageactivities', $modcontext);
 164                         require_once($CFG->libdir . '/gradelib.php');
 165                         $cm = get_coursemodule_from_id('', $id, 0, false, MUST_EXIST);
 166                         $module = new stdClass();
 167                         $module->id = $cm->instance;
 168
 169                         // Escape strings as they would be by mform
 170                         if (!empty($CFG->formatstringstriptags)) {
 171                             $module->name = clean_param($title, PARAM_TEXT);
 172                         } else {
 173                             $module->name = clean_param($title, PARAM_CLEANHTML);
 174                         }
 175
 176                         if (strval($module->name) !== '') {
 177                             $DB->update_record($cm->modname, $module);
 178                             $cm->name = $module->name;
 179                             \core\event\course_module_updated::create_from_cm($cm, $modcontext)->trigger();
 180                             rebuild_course_cache($cm->course);
 181                         } else {
 182                             $module->name = $cm->name;
 183                         }
 184
 185                         // Attempt to update the grade item if relevant
 186                         $grademodule = $DB->get_record($cm->modname, array('id' => $cm->instance));
 187                         $grademodule->cmidnumber = $cm->idnumber;
 188                         $grademodule->modname = $cm->modname;
 189                         grade_update_mod_grades($grademodule);
 190
 191                         // We need to return strings after they've been through filters for multilang
 192                         $stringoptions = new stdClass;
 193                         $stringoptions->context = $coursecontext;
 194                         echo json_encode(array('instancename' => html_entity_decode(format_string($module->name, true,  $stringoptions))));
 195                         break;
 196                 }
 197                 break;
 198
 199             case 'course':
 200                 switch($field) {
 201                     case 'marker':
 202                         require_capability('moodle/course:setcurrentsection', $coursecontext);
 203                         course_set_marker($course->id, $value);
 204                         break;
 205                 }
 206                 break;
 207         }
 208         break;
 209
 210     case 'DELETE':
 211         switch ($class) {
 212             case 'resource':
 213                 require_capability('moodle/course:manageactivities', $modcontext);
 214                 course_delete_module($cm->id);
 215                 break;
 216         }
 217         break;
 218 }