chamilo-lms2/main/inc/ajax/extra_field.ajax.php

<?php
/* For licensing terms, see /license.txt */

use Chamilo\CoreBundle\Entity\Tag;


$action = isset($_GET['a']) ? $_GET['a'] : '';

switch ($action) {
    case 'get_second_select_options':
        $type = isset($_REQUEST['type']) ? $_REQUEST['type'] : null;
        $field_id = isset($_REQUEST['field_id']) ? $_REQUEST['field_id'] : null;
        $option_value_id = isset($_REQUEST['option_value_id']) ? $_REQUEST['option_value_id'] : null;

        if (!empty($type) && !empty($field_id) && !empty($option_value_id)) {
            $field_options = new ExtraFieldOption($type);
            echo $field_options->get_second_select_field_options_by_field(
                $option_value_id,
                true
            );
        }
        break;
    case 'search_tags':
        $type = isset($_REQUEST['type']) ? $_REQUEST['type'] : null;
        $fieldId = isset($_REQUEST['field_id']) ? $_REQUEST['field_id'] : null;
        $tag = isset($_REQUEST['tag']) ? $_REQUEST['tag'] : null;
        $extraFieldOption = new ExtraFieldOption($type);

        $result = [];
        $tags = Database::getManager()
            ->getRepository('ChamiloCoreBundle:Tag')
            ->createQueryBuilder('t')
            ->where("t.tag LIKE :tag")
            ->andWhere('t.fieldId = :field')
            ->setParameter('field', $fieldId)
            ->setParameter('tag', "$tag%")
            ->getQuery()
            ->getResult();

        /** @var Tag $tag */
        foreach ($tags as $tag) {
            $result[] = [
                'key' => $tag->getTag(),
                'value' => $tag->getTag()
            ];
        }

        echo json_encode($result);
        break;
    default:
        exit;
        break;
}
exit;