Upload an image using a service

BIZ TMS XData
1
Hello,

how can I upload an image with an xdata service?
I'd like to have something like this interface

[httpPOST]function UploadImage(Image: sometype): TJsonObject;

where sometype is a type I do not know.

For "normal" post-functions I use something like

[httppost]function DoSomething(param: Integer): TJsonObject;
or
[httppost]function DoSomething(param: TSomeType): TJsonObject;

and transfer the object as JSON Object. But what type can I use for a file upload from a web form via POST?
  1. <form action="https://myserver/UploadImage" method="post" enctype="multipart/form-data">
  2. <input type="file" name="fileToUpload" id="Image">
  3. <input type="submit" value="Upload Image" name="submit">
  4. </form>
Do You have any advice? What enctype do I use and how can I get the data in my service function?

Kind regards
Harald

2

You could use TArray<byte> as the sometype. But that would be a "Rest" way to communicate with it, via TXDataClient, or posting a JSON with base64 encoding.

If you want to use raw HTTP using web form, please refer to "FileUpload" demo in Sparkle demos.
3
Hello Wagner,
thanks for Your answer. Great support as always :-)
You asked the right question. It's good to know a way with raw data and functions, but maybe for my situation really using REST with Base64 and JSON is the better solution.
Regards
Harald