How to do csv file export and download on request

Question

I am trying to export a csv file from nodejs. When I run the script my csv file gets created,but I want it to straight for download on request. Can you please help me to find a solution for this?

I wrote

var express = require('express');
app = express();
var csvHeaders =`['language','labelType'];
var writer = csv.createCsvFileWriter(occurrencecsv ,{'encoding': 'utf8'});
MongoClient.connect('mongodb://'+host+':27017/' + dbName, function(err, db) {
 if(err) {
 throw err;
} else {

var collection = db.collection(collectionName);

  collection.find().toArray(function(err, results) {
  function insertRecords() {
    if(!results.length) {
      console.log("Csv created");
    } else {


    var record = results.pop();
    var recordArray = [];
    for(var i in csvHeaders) {
    ('undefined' != typeof(record['dwc'][csvHeaders[i]])) ? recordArray.push(record['dwc'][csvHeaders[i]]) : recordArray.push('');                  
   switch(csvHeaders[i]) {                  
    case 1:
    if('undefined' != typeof(record['dwc'][language] && 'undefined' != typeof(record['dwc'][language]))) {
    console.log("language identified",record);
    }
    ('undefined' != typeof(record['dwc'][language])) ? recordArray.push(record['dwc'][language]) : recordArray.push('');

    break;
    }writer.writeRecord(recordArray);
        insertRecords();
}
  }
      insertRecords();

I need the script for the download on request.

Please share some code, there's not enough information for us to provide a precise answer. — Paul Mougel, Nov 28 '13 at 10:55
You've included express, but aren't using it? How would you allow downloads without an http server of some sort? — WiredPrairie, Nov 28 '13 at 11:48
Please reformat your code, it's pretty unreadable ([`jsbeautifier`](http://jsbeautifier.org/)). — robertklep, Nov 28 '13 at 13:00

How to do csv file export and download on request

0 Answers0