Alamofire 4 upload with parameters

If your value is of type Any, you can change it like this

for (key, value) in params {
    let paramsData:Data = NSKeyedArchiver.archivedData(withRootObject: value)
    formData.append(paramsData, withName: key)
}

Its working fine on my side.

I'm using following code:

let parameters = [
            "file_name": "swift_file.jpeg"
        ]

Alamofire.upload(multipartFormData: { (multipartFormData) in
            multipartFormData.append(UIImageJPEGRepresentation(self.photoImageView.image!, 1)!, withName: "photo_path", fileName: "swift_file.jpeg", mimeType: "image/jpeg")
            for (key, value) in parameters {
                multipartFormData.append(value.data(using: String.Encoding.utf8)!, withName: key)
            }
            }, to:"http://sample.com/upload_img.php")
    { (result) in
        switch result {
        case .success(let upload, _, _):

            upload.uploadProgress(closure: { (progress) in
                //Print progress
            })

            upload.responseJSON { response in
                //print response.result
            }

        case .failure(let encodingError):
               //print encodingError.description
        }
    }