Question Re: Create Stream when uploading attachments in Technology Q&A

Create Stream when uploading attachments

GowthamRaja — Mon, 04 Sep 2023 12:25:46 GMT

Hi Experts,

I am using Uploadset UI5 control for attaching docs. I have "Submit" button to send the attachment to backend.

In my controller when i use the below code,

var serviceurl = "/sap/opu/odata/sap/ZI_XX_SRV/";

var oModel = new sap.ui.model.odata.v2.ODataModel(serviceurl);

//Locate base64 content//

var base64Index = e.target.result.indexOf(base64_marker) + base64_marker.length;

// Get base 64 content//

var base64 = e.target.result.substring(base64Index);

oFileRaw.data = base64;

var mHeaders = {

"slug": oController.byId("UploadSet3").getHeaderFields()[1].getText().split("|")[0],

"Content-Type": oController.byId("UploadSet3").getHeaderFields()[2].getText()

};

oModel.setHeaders(mHeaders);

oModel.create(entityset, payLoad, {

success: function (oData, response) {

debugger;

alert("yes");

error: function (response) {

debugger;

alert("No");

}

});

It doesnot trigger the backend call and gives error "no hadler for data".

So now i am making the oModel change (removing v2) .

var oModel = new sap.ui.model.odata.ODataModel(serviceurl);

Now my odata is triggering, i am getting only slug & content type in headers but my content in payload is not receiving in backend.

So now i have commented my code

//var mHeaders = {

// "slug": oController.byId("UploadSet3").getHeaderFields()[1].getText().split("|")[0],

// "Content-Type": oController.byId("UploadSet3").getHeaderFields()[2].getText()

// };

//oModel.setHeaders(mHeaders);

Now in backend i am getting my payload but i am not getting my headers since i have commented.

How should i receive both headers(slug & Content type) and payload in a single call? Do i need to use "v2" in my odata service or not?

Please help how to resolve this issue

Thanks,

Gowtham

Re: Create Stream when uploading attachments

AlexNecula30 — Mon, 04 Sep 2023 13:15:52 GMT

Hi,

You shouldn't create the request yourself but use the method upload and the control will trigger it automatically.

Alex

Re: Create Stream when uploading attachments

GowthamRaja — Mon, 04 Sep 2023 13:21:13 GMT

if we use upload url then it will call the back end automatically I don’t want to do that because end user may attach docs and they may delete that also so if I use uploadurl then the attachments will be uploaded to back end. I don’t want to do that once user finalise the docs to send them I have introduced submit button to trigger back end call

Re: Create Stream when uploading attachments

AlexNecula30 — Mon, 04 Sep 2023 13:26:27 GMT

Hi gowtham.raja,

If I understood correctly, your requirement can be handled by setting the property instantUpload = false:

Defines whether the upload process should be triggered as soon as the file is added.
If set to false, no upload is triggered when a file is added.

Then, in your submit button call the upload method.

Alex