Добавляем капчу в комментарии для движка InstantCMS 2.6.1

define('LANG_COMMENTS_CAPCHA_FOR_GUESTS',   'Показывать капчу гостям');
define('LANG_COMMENTS_CAPCHA_FOR_GUESTS_HINT',  'Отображать капчу при добавлении комментариея гостем чтобы избежать спама в комментариях');

define('LANG_COMMENTS_CAPCHA_FOR_GUESTS',   'Show CAPTCHA for guests');
define('LANG_COMMENTS_CAPCHA_FOR_GUESTS_HINT',  'Show the captcha by adding a guest commentary to avoid comment spam');

new fieldCheckbox('is_guests', array(
      'title' => LANG_COMMENTS_OPT_IS_GUESTS,
      'hint' => LANG_COMMENTS_OPT_IS_GUESTS_HINT,
)),

new fieldCheckbox('capcha_for_guests', array(
        'title' => LANG_COMMENTS_CAPCHA_FOR_GUESTS,
	'hint' => LANG_COMMENTS_CAPCHA_FOR_GUESTS_HINT,
)),

<?php // Шаблон списка комментариев и формы добавления //
 
$this->addJS('templates/default/js/jquery-scroll.js');
$this->addJS('templates/default/js/comments.js');
$is_guests_allowed =  !empty($this->controller->options['is_guests']);
$is_karma_allowed = $user->is_logged && !cmsUser::isPermittedLimitHigher('comments', 'karma', $user->karma);
 
?>

<?php $captcha_for_guests = cmsEventsManager::hook('captcha_html'); ?>
<?php $enable_capcha =  !empty($this->controller->options['capcha_for_guests']); ?>

<?php echo $user->is_logged ? html_editor('content') : html_textarea('content'); ?>

<?php if (!$user->is_logged && $enable_capcha) 
      {
             echo $captcha_for_guests; 
      } ?>

$csrf_token        = $this->request->get('csrf_token', '');
        $target_controller = $this->request->get('tc', '');
        $target_subject    = $this->request->get('ts', '');
        $target_id         = $this->request->get('ti', '');
        $target_user_id    = $this->request->get('tud', '');
        $parent_id         = $this->request->get('parent_id', 0);
        $comment_id        = $this->request->get('id', 0);
        $content           = $this->request->get('content', '');

$enable_capcha =  !empty($this->controller->options['capcha_for_guests']);

if ($is_guest){
	       $comment['author_name']  = $author_name;
                $comment['author_email'] = $author_email;
            }

if ($is_guest && $enable_capcha)
            {
                $is_captcha_for_comments_valid = cmsEventsManager::hook('captcha_validate', $this->request);
                if (!$is_captcha_for_comments_valid)
                {
                    $result_capcha_invalid = array(
                        'error'     => 'capcha_invalid',
                        'message'   => LANG_CAPTCHA_ERROR
                    );
                    return $this->cms_template->renderJSON($result_capcha_invalid);
                }
            }