public function getLabelText($field_key)
    {
        $field = $this->getField($field_key);
        if (!is_array($field)) {
            return null;
        }

        return (array_key_exists('label', $field))
            ? $field['label']
            : Str::human(str_replace('-', ' ', preg_replace('/_id$/i', '', $field_key)));
    }