我应该把上传功能放在哪里 - Symfony2

Question

我正在阅读并尝试申请this article about File Uploads，但出现了问题。据说是这样的：

if ($form->isValid()) {
    $em = $this->getDoctrine()->getEntityManager();

    $document->upload();

    $em->persist($document);
    $em->flush();

    $this->redirect(...);
}

应该进入Controller，这里是upload函数的定义

public function upload()
{
    // the file property can be empty if the field is not required
    if (null === $this->file) {
        return;
    }

    // we use the original file name here but you should
    // sanitize it at least to avoid any security issues

    // move takes the target directory and then the target filename to move to
    $this->file->move($this->getUploadRootDir(), $this->file->getClientOriginalName());

    // set the path property to the filename where you'ved saved the file
    $this->path = $this->file->getClientOriginalName();

    // clean up the file property as you won't need it anymore
    $this->file = null;
}

但是我应该把它放在哪里呢？我在控制器中尝试了调用它的操作并发生错误 - Fatal error: Call to undefined method... 我还尝试将它放在不同的类和文件中，并使用 use 添加其命名空间，但错误仍然存​​在。 你能告诉我错误在哪里吗？ :)

Answer 1

如果你仔细看代码，你会发现上传是作为文档对象的函数调用的：

$document->upload();

所以，这就是它应该去的地方，在您的 Document 实体类中