laravel - undefined variable : request

Question

当我尝试上传文件时，它显示错误:

Undefined variable: request

这是我使用它的地方:
上传 Controller :

if($request->hasFile('file')){
        $file = $request ->file('file');
        $fileName = $file->getClientOriginalName();
        $destinationPath = config('app.fileDesinationPath').'/'.$fileName;
        $uploads = Storage::put($destinationPath,file_get_contents($file->getRealPath()));

    }
    return redirect()->to('/upload');

这里有什么问题？

Answer 1

添加 Request $request函数中的参数。例子:

public function yourFunction(Request $request)
{
    if($request->hasFile('file')){
        $file = $request ->file('file');
        $fileName = $file->getClientOriginalName();
        $destinationPath = config('app.fileDesinationPath').'/'.$fileName;
        $uploads = Storage::put($destinationPath,file_get_contents($file->getRealPath()));

    }
    return redirect()->to('/upload');
}

请仔细阅读文档: http://laravel.com/docs

你也可以在这里观看 Laravel 教程: http://laracasts.com