[ STUCK ] Back End Development and APIs Projects: Exercise Tracker

Hello :slight_smile:

I am just starting the certification project and cannot get past the first bit.

The first test/task is "You can POST to /api/users with form data username to create a new user."

Pretty straightforward. I added the code below (between comments) but I just cannot get a value out of req.body.username.

My code:

const express = require('express')
const app = express()
const cors = require('cors')

app.get('/', (req, res) => {
  res.sendFile(__dirname + '/views/index.html')

//  MY CODE     ---------------------------------
app.post("/api/users", async (req, res) => {
  let username = req.body.username;   // <<--the culprit
  if (username === ""){
    res.json({error: "please enter a user name"})


//  MY CODE     ---------------------------------

const listener = app.listen(process.env.PORT || 3000, () => {
  console.log('Your app is listening on port ' + listener.address().port)

The resulting error message:

  let username = req.body.username;   // <<--the culprit

TypeError: Cannot read properties of undefined (reading 'username')

I have tried req.body and req.body.username … I even tried req.params and req.params.username out of desparation but nothing!

The relevant HTML form:

<form action="/api/users" method="post">
        <h2>Create a New User</h2>
        <p><code>POST /api/users</code></p>
        <input id="uname" type="text" name="username" placeholder="username" />
        <input type="submit" value="Submit" />

I’m either missing something dreadfully obvious or maybe there’s something wrong with the test setup?

Looks like you are missing the bodyparser middleware. You’ll need that anytime you are getting data out of these forms which send data in the body

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@pkdvalis thank you! you are correct.
I ended up using multer instead of body-parser but you helped me get unstuck.


1 Like