people.js

var express = require('express'),
  router = express.Router(),
  mongoose = require('mongoose'),
  Person = mongoose.model('Person');

module.exports = function (app) {
  app.use('/api/people', router);
};

/**
 * @api {post} /people Create a person
 * @apiName CreatePerson
 * @apiGroup People
 *
 * @apiSuccess {String} age Age of the person.
 */
router.post('/', function (req, res, next) {

  var person = new Person(req.body);

  person.save(function (err, createdPerson) {
    if (err) {
      res.status(500).send(err);
      return;
    }

    res.send(createdPerson);
  });
});

// GET /api/people
router.get('/', function (req, res, next) {

  Person.find(function (err, people) {
    if (err) {
      res.status(500).send(err);
      return;
    }

    res.send(people);
  });
});

// GET /api/people/:id
router.get('/:id', function (req, res, next) {

  var personId = req.params.id;

  Person.findById(personId, function(err, person) {
    if (err) {
      res.status(500).send(err);
      return;
    } else if (!person) {
      res.status(404).send('Person not found');
      return;
    }

    res.send(person);
  });
});

// PUT /api/people/:id
router.put('/:id', function (req, res, next) {

  var personId = req.params.id;

  Person.findById(personId, function(err, person) {
    if (err) {
      res.status(500).send(err);
      return;
    } else if (!person) {
      res.status(404).send('Person not found');
      return;
    }

    person.name = req.body.name;
    person.age = req.body.age;

    person.save(function(err, updatedPerson) {
      if (err) {
        res.status(500).send(err);
        return;
      }

      res.send(updatedPerson);
    });
  });
});

// DELETE /api/people/:id
router.delete('/:id', function (req, res, next) {

  var personId = req.params.id;

  Person.remove({
    _id: personId
  }, function(err, data) {
    if (err) {
      res.status(500).send(err);
      return;
    }

    console.log('Deleted ' + data + ' documents');
    res.sendStatus(204);
  });
});