Base64 to Attachment Conversion

[supriya pratapa]

I have tried below code and it works for converting base64 to an attachment(pdf). But the base64DecodeAsBytes Method is not documented under the GlideStringUtil API

ServiceNow Link: GlideStringUtil - Scoped, Global | ServiceNow Developers)

var base64Bytes = GlideStringUtil.base64DecodeAsBytes(base64Payload);

var attachment = new GlideSysAttachment();

var rec = new GlideRecord('incident');

rec.get('57af7aec73d423002728660c4cf6a71c');

var fileName = 'myfile.pdf';

var contentType = 'application/pdf';

var agr = attachment.write(rec, fileName, contentType, base64Bytes);

Also we have writeBase64 method in GlideSysAttachment() but this doesnt work when I tested it. 

var attachment = new GlideSysAttachment();

var rec = new GlideRecord('incident');
var incidentSysID = 'ab1b30031b04ec101363ff37dc4bcbfc';
rec.get(incidentSysID);
var fileName = 'example.txt';
var contentType = 'text/csv';
var base64Encodedcontent = 'SSBhbSB0ZXh0Lg==';

var agr = attachment.writeBase64(rec, fileName, contentType, base64Encodedcontent);

gs.info('The attachment sys_id is: ' + agr);

Link for the same:

 GlideSysAttachment | ServiceNow Developers

I would like to know the best practise to be followed here.

[Ankur Bawiskar]

@supriya pratapa 

writeBase64() works only in scoped app and is not available when script runs in global scope.

script is written in global or scoped app?

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[supriya pratapa]

Hi @Ankur Bawiskar 

Yes I have tested it in scoped app. But it didn't work.

[Ankur Bawiskar]

@supriya pratapa 

this script worked for me in scoped app

var base64Payload = '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';

var gr = new GlideRecord('incident');
var recordSysId = '57af7aec73d423002728660c4cf6a71c';
if (!gr.get(recordSysId)) {
    gs.error('Record not found: incident sys_id=' + recordSysId);
    return;
} else {
    var fileName = 'test10.pdf';
    var contentType = 'application/pdf';
    var attachment = new GlideSysAttachment();
    attachment.writeBase64(gr, fileName, contentType, base64Payload);
}

💡 If my response helped, please mark it as correct ✅ and close the thread 🔒— this helps future readers find the solution faster! 🙏