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 require_once('../config.php');
  27 require_once($CFG->dirroot.'/course/lib.php');
  28
  29 // Initialise ALL the incoming parameters here, up front.
  30 $courseid   = required_param('courseId', PARAM_INT);
  31 $class      = required_param('class', PARAM_ALPHA);
  32 $field      = optional_param('field', '', PARAM_ALPHA);
  33 $instanceid = optional_param('instanceId', 0, PARAM_INT);
  34 $sectionid  = optional_param('sectionId', 0, PARAM_INT);
  35 $beforeid   = optional_param('beforeId', 0, PARAM_INT);
  36 $value      = optional_param('value', 0, PARAM_INT);
  37 $column     = optional_param('column', 0, PARAM_ALPHA);
  38 $id         = optional_param('id', 0, PARAM_INT);
  39 $summary    = optional_param('summary', '', PARAM_RAW);
  40 $sequence   = optional_param('sequence', '', PARAM_SEQUENCE);
  41 $visible    = optional_param('visible', 0, PARAM_INT);
  42 $pageaction = optional_param('action', '', PARAM_ALPHA); // Used to simulate a DELETE command
  43
  44 $PAGE->set_url('/course/rest.php', array('courseId'=>$courseId,'class'=>$class));
  45
  46 // Authorise the user and verify some incoming data
  47 if (!$course = $DB->get_record('course', array('id'=>$courseid))) {
  48     error_log('AJAX commands.php: Course does not exist');
  49     die;
  50 }
  51
  52 $context = get_context_instance(CONTEXT_COURSE, $course->id);
  53 require_login($course);
  54 require_capability('moodle/course:update', $context);
  55
  56 if (!empty($CFG->disablecourseajax)) {
  57     error_log('Course AJAX not allowed');
  58     die;
  59 }
  60
  61 require_sesskey();
  62
  63 // OK, now let's process the parameters and do stuff
  64 // MDL-10221 the DELETE method is not allowed on some web servers, so we simulate it with the action URL param
  65 $requestmethod = $_SERVER['REQUEST_METHOD'];
  66 if ($pageaction == 'DELETE') {
  67     $requestmethod = 'DELETE';
  68 }
  69
  70 switch($requestmethod) {
  71     case 'POST':
  72
  73         switch ($class) {
  74             case 'block':
  75
  76                 switch ($field) {
  77                     case 'visible':
  78                         blocks_execute_action($PAGE, $pageblocks, 'toggle', $blockinstance);
  79                         break;
  80
  81                     case 'position':  // Misleading case. Should probably call it 'move'.
  82                         // We want to move the block around. This means changing
  83                         // the column (position field) and/or block sort order
  84                         // (weight field).
  85                         blocks_move_block($PAGE, $blockinstance, $column, $value);
  86                         break;
  87                 }
  88                 break;
  89
  90             case 'section':
  91
  92                 if (!$DB->record_exists('course_sections', array('course'=>$course->id, 'section'=>$id))) {
  93                     error_log('AJAX commands.php: Bad Section ID '.$id);
  94                     die;
  95                 }
  96
  97                 switch ($field) {
  98                     case 'visible':
  99                         set_section_visible($course->id, $id, $value);
 100                         break;
 101
 102                     case 'move':
 103                         move_section_to($course, $id, $value);
 104                         break;
 105                 }
 106                 rebuild_course_cache($course->id);
 107                 break;
 108
 109             case 'resource':
 110                 if (!$cm = get_coursemodule_from_id('', $id, $course->id)) {
 111                     error_log('AJAX commands.php: Bad course module ID '.$id);
 112                     die;
 113                 }
 114                 switch ($field) {
 115                     case 'visible':
 116                         set_coursemodule_visible($cm->id, $value);
 117                         break;
 118
 119                     case 'groupmode':
 120                         set_coursemodule_groupmode($cm->id, $value);
 121                         break;
 122
 123                     case 'indentleft':
 124                         if ($cm->indent > 0) {
 125                             $cm->indent--;
 126                             $DB->update_record('course_modules', $cm);
 127                         }
 128                         break;
 129
 130                     case 'indentright':
 131                         $cm->indent++;
 132                         $DB->update_record('course_modules', $cm);
 133                         break;
 134
 135                     case 'move':
 136                         if (!$section = $DB->get_record('course_sections', array('course'=>$course->id, 'section'=>$sectionid))) {
 137                             error_log('AJAX commands.php: Bad section ID '.$sectionid);
 138                             die;
 139                         }
 140
 141                         if ($beforeid > 0){
 142                             $beforemod = get_coursemodule_from_id('', $beforeid, $course->id);
 143                             $beforemod = $DB->get_record('course_modules', array('id'=>$beforeid));
 144                         } else {
 145                             $beforemod = NULL;
 146                         }
 147
 148                         if (debugging('',DEBUG_DEVELOPER)) {
 149                             error_log(serialize($beforemod));
 150                         }
 151
 152                         moveto_module($cm, $section, $beforemod);
 153                         break;
 154                 }
 155                 rebuild_course_cache($course->id);
 156                 break;
 157
 158             case 'course':
 159                 switch($field) {
 160                     case 'marker':
 161                         $newcourse = new object;
 162                         $newcourse->id = $course->id;
 163                         $newcourse->marker = $value;
 164                         $DB->update_record('course', $newcourse);
 165                         break;
 166                 }
 167                 break;
 168         }
 169         break;
 170
 171     case 'DELETE':
 172         switch ($class) {
 173             case 'block':
 174                 blocks_execute_action($PAGE, $pageblocks, 'delete', $blockinstance);
 175                 break;
 176
 177             case 'resource':
 178                 if (!$cm = get_coursemodule_from_id('', $id, $course->id)) {
 179                     error_log('AJAX rest.php: Bad course module ID '.$id);
 180                     die;
 181                 }
 182                 $modlib = "$CFG->dirroot/mod/$cm->modname/lib.php";
 183
 184                 if (file_exists($modlib)) {
 185                     include_once($modlib);
 186                 } else {
 187                     error_log("Ajax rest.php: This module is missing mod/$cm->modname/lib.php");
 188                     die;
 189                 }
 190                 $deleteinstancefunction = $cm->modname."_delete_instance";
 191
 192                 // Run the module's cleanup funtion.
 193                 if (!$deleteinstancefunction($cm->instance)) {
 194                     error_log("Ajax rest.php: Could not delete the $cm->modname $cm->name (instance)");
 195                     die;
 196                 }
 197
 198                 $modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
 199
 200                 // remove all module files in case modules forget to do that
 201                 $fs = get_file_storage();
 202                 $fs->delete_area_files($modcontext->id);
 203
 204                 if (!delete_course_module($cm->id)) {
 205                     error_log("Ajax rest.php: Could not delete the $cm->modname $cm->name (coursemodule)");
 206                 }
 207                 // Remove the course_modules entry.
 208                 if (!delete_mod_from_section($cm->id, $cm->section)) {
 209                     error_log("Ajax rest.php: Could not delete the $cm->modname $cm->name from section");
 210                 }
 211
 212                 rebuild_course_cache($course->id);
 213
 214                 add_to_log($courseid, "course", "delete mod",
 215                            "view.php?id=$courseid",
 216                            "$cm->modname $cm->instance", $cm->id);
 217                 break;
 218         }
 219         break;
 220 }
 221
 222