如何在目录“供应商” Laravel中扩展类“ BinaryFileResponse”？

Question

有必要扩展“ sendContent ”的方法，即添加一种下载文件后删除目录的方法（ deleteDirAfterSend ）。

类： Symfony \ Component \ HttpFoundation \ BinaryFileResponse;
修改方法： sendContent（）;

如何正确实施？

protected $deleteDir = null;

/**
 * Sends the file.
 *
 * {@inheritdoc}
 */
public function sendContent()
{
    if (!$this->isSuccessful()) {
        return parent::sendContent();
    }

    if (0 === $this->maxlen) {
        return $this;
    }

    $out = fopen('php://output', 'wb');
    $file = fopen($this->file->getPathname(), 'rb');

    stream_copy_to_stream($file, $out, $this->maxlen, $this->offset);

    fclose($out);
    fclose($file);

    if ($this->deleteFileAfterSend && file_exists($this->file->getPathname())) {
        unlink($this->file->getPathname());
    }

    if ($this->deleteDirAfterSend && file_exists($this->deleteDir)) {
        rmdir($this->deleteDir);
    }

    return $this;
}

/**
 * If this is set to true, the file will be unlinked after the request is send
 * Note: If the X-Sendfile header is used, the deleteDirAfterSend setting will not be used.
 *
 * @param bool $shouldDelete
 *
 * @param null $dir
 * @return $this
 */
public function deleteDirAfterSend($shouldDelete = true, $dir = null)
{
    $this->deleteDirAfterSend = $shouldDelete;
    $this->deleteDir = $dir;

    return $this;
}