Serializable

trait Serializable
{
  protected static $vColumns = [];

  public static function setVisibleColumns($columns = []) {
    static::$vColumns = $columns;
  }

  public function toJson($options = 0) {
    $this->setVisible(static::$vColumns);
    return parent::toJson($options);
  }

  public function toArray() {
    $this->setVisible(static::$vColumns);
    return parent::toArray();
  }

}