In Webstorm node express app: router.post() shows error: unresolved function or method post()

Question

When I run the localhost:3000/users/yu , I get a 404 not found. Why is the post() coming up as undefined? when I run a POST from my iOS app I get a "undefined token" error. I'm running node v5.7.0 and express v4.13.4 Project was generated using express-generator to create Webstorm project.

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

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


    /* GET users listing. */
    router.get('/', function(req, res) {
      res.send("yoma");
    });

    router.post('/yu', function(req, res) {
      var test = req.body;
      //parse test
    });

My app.js looks like this:

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');

var routes = require('./routes/index');
var users = require('./routes/users');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', routes);
app.use('/users', users);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
      message: err.message,
      error: err
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    error: {}
  });
});

module.exports = app;

Answer 1

when you navigate your browser to localhost:3000/users/yu it makes GET http query, but in your router you have only POST handler for '/yu'

router.post('/yu', function(req, res) {
      console.log(req.body);
});

Add GET handler for '/yu' like this for example

router.get('/yu', function(req, res) {
      console.log(req.body);
});

After that you should not get a 404 error when navigate to localhost:3000/users/yu