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   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 <[email protected]>
  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();