How can I post Using POST response with a filename

[masagarino]

I've created API for sending file . but error is like this

Content-Disposition: form-data; name="datafile"; filename="ken2.jpg"
Content-Type: image/jpeg

I want to know if how can I pass filename in xhr .

In my API the error is
MultiValueDictKeyError at /hrs/cms/test_upload/
"'filename'"

filename is the name should I get in the post I send.