tag/tag_autocomplete.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  * @package    core
  20  * @subpackage tag
  21  * @copyright  2007 Luiz Cruz <luiz.laydner@gmail.com>
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 define('AJAX_SCRIPT', true);
  26
  27 require_once('../config.php');
  28 require_once('lib.php');
  29
  30 if (empty($CFG->usetags)) {
  31     // Tags are disabled.
  32     die();
  33 }
  34
  35 require_login(0, false);
  36 if (isguestuser()) {
  37     // Guests should not be using this.
  38     die();
  39 }
  40
  41 // If a user cannot edit tags, they cannot add related tags which is what this auto complete is for.
  42 require_capability('moodle/tag:edit', context_system::instance());
  43
  44 $query = optional_param('query', '', PARAM_TAG);
  45
  46 echo $OUTPUT->header();
  47
  48 // Limit the query to a minimum of 3 characters.
  49 $similartags = array();
  50 if (core_text::strlen($query) >= 3) {
  51     $similartags = tag_autocomplete($query);
  52 }
  53
  54 foreach ($similartags as $tag) {
  55     echo clean_param($tag->name, PARAM_TAG) . "\t" . tag_display_name($tag) . "\n";
  56 }
  57
  58 echo $OUTPUT->footer();