“Storage::putFile”的 Laravel 5.4 用法

Laravel 5.4 usage of "Storage::putFile"

提问by Mydisname

I am working with Laravel 5.4 and want to upload a file (let's call it "lorem.ext") to the storage directory (storage/app/) "path/to/file" with a unique file name.

我正在使用 Laravel 5.4 并希望使用唯一的文件名将文件（我们称之为“lorem.ext”）上传到存储目录（storage/app/）“path/to/file”。

For that I want to use Storage::putFile (https://laravel.com/docs/5.4/filesystem#storing-files) which not only stores my file, but also automatically creates a unique file name.

为此，我想使用 Storage::putFile ( https://laravel.com/docs/5.4/filesystem#storing-files)，它不仅存储我的文件，还自动创建一个唯一的文件名。

The documentation says to use such:

文档说使用这样的：

Storage::putFile('uploadedFile', new File('/path/to/file'));

Using this, I will get the error

使用这个，我会得到错误

FileNotFoundException in File.php line 37: The file "/path/to/file" does not exist

My further thoughts:

我的进一步想法：

I honestly do not know exactly what the signature means and never found a working example from putFile in the web. In the documentation it is not described and looking closer (https://laravel.com/api/5.4/Illuminate/Filesystem/FilesystemAdapter.html#method_putFile) there is no information, as well.

老实说，我不知道签名的确切含义，也从未在网络上从 putFile 中找到工作示例。在文档中它没有被描述并且仔细观察（https://laravel.com/api/5.4/Illuminate/Filesystem/FilesystemAdapter.html#method_putFile）也没有信息。

What I think it means:

我认为的意思是：

The first parameter "uploadedFile" (or as https://laravel.com/docs/5.4/filesystem#storing-filescalls it: "photos") will automatically get the file via the ID from the form in the view:

第一个参数“uploadedFile”（或如https://laravel.com/docs/5.4/filesystem#storing-files所称的：“photos”）将通过视图中表单的 ID 自动获取文件：

<input type="file" id="uploadedFile" name="uploadedFile">

and there is no need anymore to load it via

并且不再需要通过加载它

request()->file('uploadedFile')

The second parameter "new File('/path/to/file')" (or as https://laravel.com/docs/5.4/filesystem#storing-filescalls it: "new File('/path/to/photo')") will specify the path in the targetstorage directory on the server without the file name:

第二个参数“new File('/path/to/file')”（或如https://laravel.com/docs/5.4/filesystem#storing-files所称：“new File('/path/to/ photo')") 将指定服务器上目标存储目录中的路径，不带文件名：

.../storage/app/path/to/file/formerLoremNowUniqueFileName.ext

So complete example where I can upload my lorem.ext and it will get stored on .../storage/app/path/to/file/formerLoremNowUniqueFileName.ext (which does not work):

如此完整的示例，我可以上传我的 lorem.ext 并将其存储在 .../storage/app/path/to/file/formerLoremNowUniqueFileName.ext （不起作用）：

View:

看法：

<form method="POST" action="URL/TO/STORE" enctype="multipart/form-data">
    {{ csrf_field() }}
    <input type="file" id="uploadedFile" name="uploadedFile">
    <button type="submit" class="btn btn-primary">Upload</button>
</form>

Controller:

控制器：

public function store() {
    return Storage::putFile('uploadedFile',  new File('/path/to/file'));
}

Can anybody

任何人都可以

1. describe the signature of "putFile" so that I get it? ;-)
2. tell me why my example is wrong and why I do get this FileNotFoundException?

1. 描述“putFile”的签名以便我得到它？;-)
2. 告诉我为什么我的例子是错误的，为什么我会得到这个 FileNotFoundException？

Thank you!

谢谢！

回答by Ken

First argument passed to putFileis the new file location. Example: /path/to/new/file/

传递给的第一个参数putFile是新文件位置。例子：/path/to/new/file/

The second argument is a Fileor UploadedFileinstance. This can come from request()->file('uploadedFile').

第二个参数是一个File或UploadedFile实例。这可以来自request()->file('uploadedFile').

Thus your controller should read

因此你的控制器应该阅读

public function store() {
    return Storage::putFile(
               storage_path('uploads'),
               request()->file('uploadedFile')
           );
}

A generated hash will be used for the file name.

生成的哈希将用于文件名。

Reference:

参考：

• filesystem->putFile()

• 文件系统->putFile()