文件上传表单验证在 laravel 5.1 中不起作用?

File upload form validation is not working in laravel 5.1?

我正在使用表单验证在 laravel 5.1、

中上传文件
  class FileUploadRequest extends Request {

   public function rules() {
    return ['file' => 'required', 'max:2048', 'mimes:pdf,png,jpeg,jpg'];
}

  public function upload(FileUploadRequest $request) {
  }

但它没有验证大小和 mime..我怎么了?

尝试像这样修改规则函数

public function rules()
{
    return [
        'file' => 'required|mimes:pdf,png,jpeg,jpg|size:2048',
    ];
}