package.json

{
  "name": "uptown",
  
  "dependencies": {
  "express": "latest",
  "lodash":"latest",
  "mongoose": "4.5.0"
   }
}

Product.js

'use strict';

/**
 * Module dependencies.
 */
var mongoose = require('mongoose'),
  Schema = mongoose.Schema;


/**
 * Product Schema
 */
var ProductSchema = new Schema({
    
    name: {
        type: String,
        required: true
    },
    description: {
        type: String,
        required: true
    },
    confirmed: {
        type: Boolean,
        default: false
    },
    tags: [{
        type: String
    }]
});


/**
 * Statics
 */
ProductSchema.statics.load = function (id, cb) {
    this.findOne({
        _id: id
    }).exec(cb);
};

mongoose.model('Product', ProductSchema);

productsController.js

'use strict';

/**
 * Module dependencies.
 */
var mongoose = require('mongoose'),
  Product = mongoose.model('Product'),
  _ = require('lodash');


/**
 * Find product by id
 */
exports.product = function (req, res) {
    Product.load(req.params.id, function (err, product) {
        if (err) return next(err);
        if (!product) return next(new Error('Failed to load product ' + id));
        req.product = product;
        next();
    });
};

/**
 * Create an product
 */
exports.create = function (req, res) {
    var product = new Product(req.body);

    product.save(function (err) {
        if (err) {
            return res.status(500).json({
                error: 'Cannot save the product'
            });
        }
        res.json(product);

    });
};

/**
 * Update an product
 */
exports.update = function (req, res) {
    var product = req.product;

    product = _.extend(product, req.body);

    product.save(function (err) {
        if (err) {
            return res.status(500).json({
                error: 'Cannot update the product'
            });
        }
        res.json(product);

    });
};

/**
 * Delete an product
 */
exports.destroy = function (req, res) {
    var product = req.product;

    product.remove(function (err) {
        if (err) {
            return res.status(500).json({
                error: 'Cannot delete the product'
            });
        }
        res.json(product);

    });
};

/**
 * Show an product
 */
exports.show = function (req, res) {
    res.json(req.product);
};

/**
 * List of Products
 */
exports.all = function (req, res) {
    Product.find({},function (err, products) {
        if (err) {
            return res.status(500).json({
                error: 'Cannot list the products'
            });
        }
        res.json(products);

    });
};

exports.confirm = function (req, res) {
    var product = req.product;

    product.confirmed = true;

    product.save(function (err) {
        if (err) {
            return res.status(500).json({
                error: 'Cannot confirm the product'
            });
        }
        res.json(product);

    });
};

server.js

var express = require('express');
var app = express();
var products = require('./productsController');


app.get('/products', products.all);
app.post('/products', products.create);
app.get('/products/:productId', products.show);
app.put('/products/:productId', products.update);
app.delete('/products/:productId', products.destroy);
app.post('/products/:productId/confirm', products.confirm);

app.param('productId', products.product);
app.listen(3000, function () {
    console.log('Example app listening on port 3000!');
});