express.js route index.js route config

index.js

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

/* GET home page. */
router.get('/', function(req, res, next) {
  res.render('index', { title: 'Express' });
});


var users = {
    100: {
        name: 'John',
        age: 43
    },
    200: {
        name: 'Tom',
        age: 12
    },
    300: {
        name: 'Mary',
        age: 70
    }
};

// read
router.get('/user/:id', function(req, res, next) {
    
  var id = req.params['id'];
  
  if (users[id])
    return res.json(users[id]);
  
  return res.json({
      message: 'user not found'
  });
  
});

// create
router.post('/user', function(req, res, next) {
  
  var id = req.body.id;  
  var name = req.body.name;
  var age = req.body.age;
  
  if (! id || ! name || ! age) {
      return res.json({
          message: 'id or name or age is not correct'
      });
  }
  
  users[id] = {
    name: name,
    age: age
  };
  
  return res.json({
      message: 'user: ' + name + ' is created' 
  });
  
});

module.exports = router;