MetaModels\Filter\Setting\Simple::validateWidget PHP Метод

    protected function validateWidget($widget, $value)
    {
        if (null === $value) {
            return;
        }
        $name = $widget->name;
        // Backup $_POST value.
        $keeper = Input::post($name);
        Input::setPost($name, $value);
        $widget->validate();
        // Restore $_POST value.
        Input::setPost($name, $keeper);
    }