Express Server - Cannot POST / [duplicate]

There are actually a couple of problems, but the main one is that you don't have a body parser - the module that converts a node stream in the POST to a req.body. I am currently only familiar with bodyParser, and you should probably research that a bit. Although it is shown in Express 4.x documentation, you get a deprecation message when you run the server.

The other problem is the issue of comments.push. That should be comments.comments.push. The following works:

router.js:

var fs = require('fs');var ejs = require('ejs')module.exports = function(app){  app.get('/', function(req, res){    var comments = JSON.parse(fs.readFileSync(__dirname + '/../comments.json'));    res.render('index.ejs', comments);  });  app.post('/', function(req, res){    console.log('here in post');    console.log(req.body)    var name = req.body.name;    var message = req.body.message;    var newComment = {"name": name, "message": message};    var comments = JSON.parse(fs.readFileSync(__dirname + '/../comments.json'));    comments.comments.push(newComment);    fs.writeFileSync(__dirname + '/../comments.json', JSON.stringify(comments), 'utf8');    //redirect to a 'get' on '/'    res.redirect('/');  });  app.get('/about', function(req, res){    res.render('about.html')  });}

and server.js:

var express = require('express');var bodyParser = require('body-parser');var app = express();app.use(bodyParser.urlencoded())// routing configurationrequire('./router/main')(app);// ejs configurationapp.set('views', __dirname + '/views');app.set('view engine', 'ejs');app.engine('html', require('ejs').renderFile);// run the servervar server = app.listen(8080, function(){  console.log('Express server listening on port 8080');})