导出 CSV 响应 laravel 5.5 并下载为 csv 文件

我正在尝试使用 ajax 请求导出并下载 csv 文件中的一些数据。我能够以 json 响应输出数据进行测试，但无法将其下载到 data.csv 文件中

以下是我到目前为止编写的代码

   public function download(Request $request)
    {

        if(!empty($request->input('my_checkbox')))
        {
             $studentIdToExportArray = $request->input('my_checkbox');
            //$msg = is_array($studentIdToExportArray);//returns true
            $selectedStudents = [];   
            foreach($studentIdToExportArray as $student_id)
            {
                    $student = Students::find($student_id);
                    array_push($selectedStudents, $student);
            }
            header('Content-Type: text/csv; charset=utf-8');
            header('Content-Disposition: attachment; filename=data.csv');
            $output=fopen("php://output","w");
            fputcsv($output,array("ID","firstname","surname","email","nationality","address_id","course_id"));

            foreach($selectedStudents as $s1)
            {
                $array = json_decode(json_encode($s1), true);
                fputcsv($output, $array);
            }
            fclose($output);    

            return response()->json([
                   'test'=> $selectedStudents 
            ]);           
        }


    }

控制台输出响应的屏幕截图

问题：文件 data.csv 无法下载

Try:

$file=fopen('../storage/app/test.csv','w');

$headers = array(
    'Content-Type' => 'text/csv',
);

$path = storage_path('test.csv');
return response()->download($path, 'test.csv', $headers);