node.js: req.body.PARAM_NAME fails returning undefined

Many times a failure comes from subtle things.

Both app.post/app.get  and  router.post/router.get accepts req.body.PARAM_NAME.

Example:

app.get('/', function(req,res){
 var email = req.body.email;
 var password = req.body.passwd;
 console.log('email: ' + email);
 console.log('pass: ' + password);
 res.render("index");
});

router.get('/alo/', function(req, res, next) {
 var email = req.body.email;
 var password = req.body.passwd;
 console.log('email: ' + email);
 console.log('pass: ' + password);
 res.render('alo', { title: 'Alo Express!' });
});

When using router and req.body returns undefined values, check if the code is well implemented, if not missing module.exports clause.

Follow by the example.

app.js file:

..

const indexRouter = require('./routes/indexRouter');

app.use('/', indexRouter);

..
module.exports = app;

 

indexRouter.js file:

..

const router = express.Router();

..

router.get('/alo/', function(req, res, next) {

  res.render('alo', { title: 'Alo Express!' });

});

..

module.exports = router;

Naturally the dependencies and app's configuration must be implemented, for example:

const express = require('express');

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

const cookeParser = require('cookie-parser');

const app = express();

const passport = require('passport');

const { check, validationResult } = require('express-validator');

const session = require('express-session')

const hbs = require('express-hbs');

const flash = require('flash');

const router = express.Router();

const view_path = __dirname + '/views/';

const public_path = __dirname + '/public/';

app.use(express.static(view_path))

app.use(express.static(public_path));

app.use(bodyParser.json());

app.use(bodyParser.urlencoded({extended: true}));

app.use(cookeParser());

app.use(passport.initialize());

app.use(passport.session());

app.set('view engine', 'html');

app.engine('html', require('hbs').__express);

 

@SEE:
Usando middlewares