Think\Db\Query::__construct PHP Méthode

    public function __construct(Connection $connection = null, $model = '')
    {
        $this->connection = $connection ?: Db::connect([], true);
        $this->builder = $this->connection->getConfig('builder') ?: $this->connection->getConfig('type');
        $this->prefix = $this->connection->getConfig('prefix');
        $this->model = $model;
    }