badges/assertion.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  * Serve assertion JSON by unique hash of issued badge
  19  *
  20  * @package    core
  21  * @subpackage badges
  22  * @copyright  2012 onwards Totara Learning Solutions Ltd {@link http://www.totaralms.com/}
  23  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  * @author     Yuliya Bozhko <yuliya.bozhko@totaralms.com>
  25  */
  26
  27 define('AJAX_SCRIPT', true);
  28
  29 require_once(dirname(dirname(__FILE__)) . '/config.php');
  30
  31 if (empty($CFG->enablebadges)) {
  32     print_error('badgesdisabled', 'badges');
  33 }
  34
  35 $hash = required_param('b', PARAM_ALPHANUM); // Issued badge unique hash for badge assertion.
  36 $action = optional_param('action', null, PARAM_BOOL); // Generates badge class if true.
  37
  38 $assertion = new core_badges_assertion($hash);
  39
  40 if (!is_null($action)) {
  41     // Get badge class or issuer information depending on $action.
  42     $json = ($action) ? $assertion->get_badge_class() : $assertion->get_issuer();
  43 } else {
  44     // Otherwise, get badge assertion.
  45     $json = $assertion->get_badge_assertion();
  46 }
  47
  48
  49 echo $OUTPUT->header();
  50 echo json_encode($json);