FilePickerUploadFile

由 FilePicker 选中的单个文件的上传描述符。

实例会被传入 upload。上传时，Flet 首先按 id 解析所选文件；当 id 缺失或找不到时，再回退到 name。

id 与 name 中至少应提供其一。

属性

名称	类型	默认值	说明
upload_url	str	required	Upload destination URL. Can be an absolute URL or a page-relative URL returned by get_upload_url.
method	str	'PUT'	HTTP method used for the upload request, usually PUT or POST.
id	Optional[int]	None	Selected file identifier returned by pick_files. This is the preferred lookup key when both id and name are specified.
name	Optional[str]	None	Selected file name used as fallback lookup when id is missing or does not match any currently selected file.