Context object is empty while receiving POST request , in Koa?

Question

I am new in Koa and I am creating a demo app. I want to create an API to handle POST request, But when I console.log(ctx); then there is nothing in ctx in indexRouter.js, the console only printing empty object like {}.

I don't know why this is happening. Please anyone suggest me where I am doing wrong? And please help me to get the request.body by POST Method.

serverKoa.js:

var koa = require('koa');
var router = require('koa-router');
var app = new koa();
var route = router(); //Instantiate the router

app.use(route.routes()); //Use the routes defined using the router
const index = require('./router/indexRouter')(route);

app.listen(3005 ,function(){
console.log("\n\nKoa server is running on port: 3005");
});

indexRouter.js:

var indexController=require('../controller/indexController');
module.exports = function (route) {
    route.post('/postnew',async ( ctx, next) => {
    console.log(ctx); // here  printing {}
  });
}

and my request object ( by postman ) is:

Method: POST,
url:http://localhost:3005/postnew
body:{
    "firstName":"viki",
    "lastName":"Kumar",
    "userName":"vk12kq14",
    "password":"098765432"
}
content-type:application/json

Answer 1

It looks like your code has two issues:

• you're not using the "next" version of koa-router, which is required if you want to use async/await. You can install it like this:

  npm i koa-router@next --save
  

• you're not using koa-bodyparser to parse the request data:

  npm i koa-bodyparser --save
  

To use:

var koa        = require('koa');
var router     = require('koa-router');
var bodyParser = require('koa-bodyparser');

var app        = new koa();
app.use(bodyParser());
...

The parsed body data will be available in your route handlers as ctx.request.body.