why my controller post method request body returns undefined?

Question

I'm having a hard time achieving this post product method. I don't completely understand why I don't be able to get my request body since im new to this backend thing.

here's my full code I need your help to debug why I dont get my request body to my post request method controller.

Model

const mongoose = require('mongoose');

const productSchema = new mongoose.Schema({
  name: {
    type: String,
  },
  ...
  });

const Product = mongoose.model('Product', productSchema);

module.exports = Product;

Controller

const Product = require('../models/productModel');

...

const createProduct = (req, res) => {
  const {
    name,
    ...
  } = req.body;
  console.log(name);
  ...
};

module.exports = {
  ...
  createProduct,
  ...
};

Here in controller found out that the console.log(name) returns undefine and and I don't know why.

Routes

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

const productController = require('../controllers/productController');

...

// POST /api/products
router.post('/', productController.createProduct);

...

module.exports = router;

index.js

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

// route imports
const productRoutes = require('./routes/productRoutes');

// local imports
const coonectDB = require('./db.js')

// Set up Express app
const app = express();
app.use(express.json());

// Set up body-parser middleware
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());

// Set up routes
app.use('/api/product', productRoutes);

// Start the server
app.listen(3000, () => {
  console.log('Server listening on port 3000');
});

coonectDB()
  .then(() => {
    console.log('db connection succeeded.')
  })
  .catch(err => console.log(err))

Postman Request Post using postman check image

VS Code Terminal VS Code terminal logs

Thank you guys in advance and more power!

You most likely didn't send the body . How do you send the request? — Konrad, Mar 12 '23 at 07:16
i used postman API URL: `http://localhost:3000/api/product` | Method: `POST` | body using row { "name": "Example Product", } — Chard, Mar 12 '23 at 07:20
@Konrad here's my vs code log screenshot https://i.stack.imgur.com/LMS41.png — Chard, Mar 12 '23 at 07:34
Do you set the content type of the request to be `application/json` ? — Gabriele Petrioli, Mar 12 '23 at 07:58

score 1 · Accepted Answer · answered Mar 12 '23 at 08:02

1

You need to tell the postman that the data you send is JSON and not text so that it sends the relevant request headers (so that your app can decode it correctly).

You should change the "Text" to "JSON"

answered Mar 12 '23 at 08:02

Gabriele Petrioli

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why my controller post method request body returns undefined?

1 Answers1