Upload file in File Attachment field using add record fail

Hi Dandiebolt,

I have to read any type of file (i.e. PDF, ms office files) from my file system (windows server) and add them to file attachment field into a quickbase table. 

I use javascript (node.js) to read a file with base64 encoding(as quickbase requires files to have base64 encoding) and use http post method (API_AddRecord) to upload the file.  I have made the field as Mandatory (just to ensure the content is there).

I always get error that "Sorry, you didnot supply a value for the required field.... Please provide a non blank value".

I fail to understand that when my console.log is showing value (first line in uploadfiletoqb method), why API is complaining about the field being blank!

I feel I am wrong somewhere which i am not able to comprehend!

Can some one please please help !!!

Here is my code :

var http = require('https');
var request = require('request'); // npm install request
var fs = require("fs");
var buf = new Buffer(1024);


console.log("Going to open an existing file");


var readStream = fs.createReadStream('d:\\MyData\\MyNode.js\\Certificates\\b.pdf',{ encoding: 'base64' });
readStream.on('data', function (chunk) {
    buf += chunk;
console.log("read data 11 "+buf.length);
})
readStream.on('end', function () {
  console.log("read data "+buf.length);
  uploadfiletoqb(buf);
});


function uploadfiletoqb(buf1)
{

console.log("encoded file"+buf1);
var xml = '<qdbapi><udata>mydata</udata><field fid="6" filename="b.pdf">'+buf1+'</field></qdbqpi>';
   
  console.log("-----");
  //console.log(xml);
  console.log("-----");
request({
url : "https://sssss.quickbase.com/db/bm3uve9ig?act=API_AddRecord&username=xxxx@yyyyy.com&password=...;,
method: "POST", 
//headers: {
//"content-type": "text/xml"  
//}, 
body:xml
}, function (err, remoteResponse, remotebody){
if (err) {console.log("error"+remoteResponse+" -- "+err); }
    console.log("ok "+remoteResponse +" "+remotebody);
});


}


would appreciate help!!!!

thanks & regards
dinesh