MenuItem::rules PHP Method

    public function rules()
    {
        return [['parent_id, menu_id, title, href', 'required', 'except' => 'search'], ['sort, status, condition_denial', 'numerical', 'integerOnly' => true], ['parent_id, menu_id, rel, target', 'length', 'max' => 10], ['title, href, condition_name, title_attr, before_link, after_link', 'length', 'max' => 255], ['class', 'length', 'max' => 50], ['regular_link', 'boolean'], ['id, parent_id, menu_id, title, href, sort, status, condition_name, condition_denial', 'safe', 'on' => 'search']];
    }