Shows how to use joi for request validation when using hapi within Node.js.

hapi-request-validation.js

'use strict';
const Hapi = require('hapi');
const Joi = require('joi');
const server = new Hapi.Server();
server.connection({ port: 8000 });

// test by calling:
// http POST localhost:8000/user/123?id=456
// or for validation failure testing, call:
// http POST localhost:8000/user/123?id=foo

server.route({
	method: ['POST', 'PUT'],
	path: '/user/{id?}', //id is set to optional with the ?
	config: {
		validate: {
			params: Joi.object({
				id: Joi.number()
			}),
			query: Joi.object({
				id: Joi.number()
			})
		},
		handler: function(request, response) {
			response({
				params: request.params,
				query: request.query,
				payload: request.payload
			});
		}
	}
});

server.start(() => console.log(`Started at ${server.info.uri}`));