如何在 laravel 5.4 中获得正确的文件扩展名

Question

When I upload a csv file in laravel 5.4, I get 'txt' as the extension. Is there something I'm missing?

View

{!! Form::open(['url' => 'transaction/save', 'files' => true]) !!}

{!! Form::file('batch'); !!}

{!! Form::submit('Upload') !!}

{!! Form::close() !!}

Controller

public function saveBatch(Request $request)
 {
        $file = $request->batch;
        $path = $request->batch->extension();

        dd($path);
 }

Answer 1

You need to move the file first, if you don't then the file is actually a temp file with no extension. You could also use:

 $request->batch->getClientOriginalExtension();

This would return the original filename's extension. More methods at: http://api.symfony.com/3.0/Symfony/Component/HttpFoundation/File/UploadedFile.html

Answer 2

获取上传文件扩展名的最佳方法：（如果文件输入名称是文件）

$extension = $request->file->extension();