Express POST request body is undefined

Question

I've been working on troubleshooting a very simple application and cannot assess why the request body of POST is undefined. I have used express.json() and body-parser and changed the Content-Type of the request to different formats and have gotten nothing back.

This is the backend code relevant to the issue

const morgan = require("morgan");
const { response } = require("express");
const { format } = require("morgan");
const express = require("express");
const app = express();
const cors = require("cors");

app.use(express.static("build"));
app.use(cors());
app.use(express.json());
app.use(morgan("combined"));

app.post("/api/phonebook/", (req, res) => {
  const body = req.body;
  console.log(req.body);
  console.log(body.content);
  if (!body.name) {
    return res.status(404).json({
      error: "no name",
    });
  }

  const personObj = {
    name: body.name,
    phone: body.phone,
    id: generateId(),
  };

  phonebook = phonebook.concat(personObj);
  response.json(personObj);
});

And this is an example POST

POST http://localhost:3000/api/phonebook/
Content-Type: application/json

{
    "name": "Bob",
    "phone": 123-456
}

The server is up and running and doing GET and DELETE requests both work.

Answer 1

POST http://localhost:3000/api/phonebook/
Content-Type: application/json

{
    "name": "Bob",
    "phone": 123-456
}

On request parameter body, 123-456 Isn't number so it should have " " to be "123-456". Because 123-456 type is null so the parameter is undefined. Parsing stiringified number into integer is needed on the server.

Updated

Response parameters in callback func should be used properly. response.json on end of callback function should be edited to res.json as the callback function defined (res, req) .