pdfmake is returning undefined

Question

I am using pdfmake package to generate pdf, but when I am testing it on postman it says undefined.

My app.js -

const express = require('express') const bodyParser = require('body-parser') const path = require('path')

const port = 9003

const app = express()

//set the public folder app.use(express.static(path.join(__dirname, 'public')))

//body parser middle ware app.use(bodyParser.urlencoded({ extended: true }))

//Index Route app.get('/', (req, res) => { //res.send('Hello World'); res.sendfile('index.html') })

const pdfRoute = require('./routes/pdfmake') app.use('/pdfMake', pdfRoute)

app.listen(port, () => { console.log(Server running at http://localhost:${port}/) })

My pdfmke.js -

const express = require('express') const router = express.Router() const fs = require('fs')

const pdfMake = require('pdfmake/build/pdfmake') const pdfFonts = require('pdfmake/build/vfs_fonts') pdfMake.vfs = pdfFonts.pdfMake.vfs

router.post('/pdf', (req, res, next) => {

const fname = req.body.fname const lname = req.body.lname

var documentDefinition = { content: [Hello ${fname} ${lname}, 'Nice to meet you!'], }

const pdfDoc = pdfMake.createPdf(documentDefinition) pdfDoc.getBase64((data) => { res.writeHead(200, { 'Content-Type': 'application/pdf', 'Content-Disposition': 'attachment;filename="filename.pdf"', })

const download = Buffer.from(data.toString('utf-8'), 'base64') res.end(download) }) })

on my postman - when I am adding body - raw-json :

{ "fname": "test", "lname":"run" }

It returns - Hello undefined undefinedNice to meet you!

Answer 1

Have you tried enclosing the variables using the backtick?

var documentDefinition = { content: [Hello \`${fname}\` \`${lname}\`, 'Nice to meet you!'], }