public static function destroyByUser($user_id)
	{
		$user_id = (is_array($user_id) ? $user_id : array($user_id));

		$blank = self::blank();

		$query = $blank->getQuery()
			->delete($blank->getTableName())
			->whereIn('user_id', $user_id);

		if (!$query->execute())
		{
			return false;
		}

		return true;
	}