Code/Demo Server book-jacket-api book-info-website Book Jacket API Rating API Book Info Website Browser ratings-api {server}.herokuapp.com https://github.com/PurpleBooth/{server} 

MVVM and Silex Welcome to the world of tomorrow! 

Goals • Working knowledge • JavaScript serverside • Client side JavaScript frameworks • Know how to integrate them with PHP • Become more of a Cross Stack developer 

Who’re you? Billie Thompson @PurpleBooth [email protected] PHP Contractor 

Imagination Time! http://www.businesscat.happyjar.com/comic/coffee/ 

Book Information Service Book Jacket API Rating API Book Info Website Browser 

Book Information Service DB Queues Logic Responsive Extendible Clean Parallel Serve JS Frontend-y Book Jacket API Rating API Book Info Website Browser 

Book Information Service Silex PHP AngularJS JavaScript Express JavaScript Book Jacket API Rating API Book Info Website Browser 

Code/Demo Server book-jacket-api book-info-website Book Jacket API Rating API Book Info Website Browser ratings-api {server}.herokuapp.com https://github.com/PurpleBooth/{server} 

Silex Solid & simple 

Book Information Service Book Jacket API Rating API Book Info Website Browser 

–Silex Demo “Please don’t break” 

// book-jacket-api/public/index.php register(new Silex\Provider\ServiceControllerServiceProvider());
 
 $app['books.controller'] = $app->share(function() use ($app) {
 return new BooksController();
 });
 
 $app->get('/hello/{name}', function($name) use($app) {
 return 'Hello '.$app->escape($name);
 });
 
 $app->get('/', "books.controller:indexAction");
 $app->get('/{isbn}', "books.controller:getAction");
 
 
 $app->run(); 

// book-jacket-api/public/index.php
 
 require_once __DIR__.'/../vendor/autoload.php';
 
 $app = new Silex\Application();
 …
 
 $app->run(); 

// book-jacket-api/public/index.php … $app->get('/hello/{name}', function($name) use($app) {
 return 'Hello '.$app->escape($name);
 });
 … 

// book-jacket-api/public/index.php use PurpleBooth\Controller\BooksController; use Silex\Provider\ServiceControllerServiceProvider; … $app->register(new ServiceControllerServiceProvider());
 … 
 $app['books.controller'] = $app->share(function() use ($app) {
 return new BooksController();
 });
 
 $app->get('/', "books.controller:indexAction");
 $app->get('/{isbn}', "books.controller:getAction"); 

bookData));
 
 }
 
 public function getAction($isbn)
 {
 if (!array_key_exists($isbn, $this->bookData)) {
 return new JsonResponse(null, 404);
 }
 
 return new JsonResponse($this->bookData[$isbn]);
 }
 } 

bookData)) {
 return new JsonResponse(null, 404);
 }
 
 return new JsonResponse($this->bookData[$isbn]);
 }
 } 

Silex for the business logic • Rapid API Development • Familiar libraries (Symfony, etc) • Perfect for small services 

Alternatives? • Apigility • ZF2 • Symfony 

MVVM Model, View and View Model 

Book Information Service Book Jacket API Rating API Book Info Website Browser 

MVVM Framework View View Model Model Remote API Browser Server 

No content

–AngularJS Demo “It looked so easy when I saw someone else’s talk” 

//- book-info-website/views/index.jade doctype html
 html(lang="en" ng-app="booksApp")
 head
 title Book Info Website
 link(rel='stylesheet', href='/stylesheets/style.css')
 script(src='/assets/modules/angular/angular.js')
 script(src='/assets/modules/angular-resource/angular-resource.js')
 script(src='/assets/modules/angular-route/angular-route.js')
 script(src='/javascripts/angular/app.js')
 script(src='/javascripts/angular/services.js')
 script(src='/javascripts/angular/controllers.js')
 body
 div(ng-view) 


 
 
 
 Book Info Website
 
 
 
 
 
 
 
 
 
 
 
 
 
 

//- book-info-website/views/index.jade 
 script(src='/assets/modules/angular/angular.js')
 script(src='/assets/modules/angular-resource/angular-resource.js')
 script(src='/assets/modules/angular-route/angular-route.js') 

//- book-info-website/views/index.jade script(src='/javascripts/angular/app.js')
 script(src='/javascripts/angular/services.js')
 script(src='/javascripts/angular/controllers.js') 

// book-info-website/public/javascripts/angular/app.js
 var booksApp = angular.module('booksApp', [
 'ngResource', 
 'ngRoute',
 'booksServices',
 'booksControllers'
 ]);
 
 booksApp.config(['$routeProvider',
 function($routeProvider) {
 $routeProvider.
 when('/', {
 templateUrl: 'partials/list.html',
 controller: 'IndexController'
 }).
 when('/:isbn', {
 templateUrl: 'partials/details.html',
 controller: 'DetailController'
 }).
 otherwise({
 redirectTo: '/'
 });
 }]); 

//- book-info-website/views/index.jade html(lang="en" ng-app=“booksApp”) … // book-info-website/public/javascripts/angular/app.js 
 var booksApp = angular.module('booksApp', [
 'ngResource', 
 'ngRoute',
 'booksServices',
 'booksControllers'
 ]); 
 

// book-info-website/public/javascripts/angular/app.js booksApp.config(['$routeProvider',
 function($routeProvider) {
 $routeProvider.
 when('/', {
 templateUrl: 'partials/list.html',
 controller: 'IndexController'
 }).
 when('/:isbn', {
 templateUrl: 'partials/details.html',
 controller: 'DetailController'
 }).
 otherwise({
 redirectTo: '/'
 });
 }]); … //- book-info-website/views/index.jade body
 div(ng-view) 

No content

//- book-info-website/views/partials/list.jade
 div(ng-controller="IndexController")
 h1= title
 h2 Book list!
 ul
 li(ng-repeat="book in books")
 a(href="#/{{book.isbn}}") {{book.title}} 

// book-info-website/public/javascripts/angular/controllers.js
 var booksControllers = angular.module('booksControllers', []);
 
 booksControllers.controller('IndexController', ['$scope', 'Book', function ($scope, Book) {
 Book.query({}, function (books) {
 $scope.books = books;
 });
 }]);
 
 booksControllers.controller(
 'DetailController',
 ['$scope', '$routeParams', 'Book',
 function ($scope, $routeParams, Book) {
 Book.pushGet({isbn: $routeParams.isbn}, function (book) {
 $scope.book = book;
 });
 
 $scope.$on('$destroy', function () {
 Book.stopPushGet();
 });
 }
 ]
 ); 

// book-info-website/public/javascripts/angular/controllers.js var booksControllers = angular.module('booksControllers', []);
 
 booksControllers.controller( 'IndexController', ['$scope', 'Book', function ($scope, Book) {
 $scope.books = Book.query();
 }] ); … 

// book-info-website/public/javascripts/angular/services.js
 var booksService = angular.module('booksServices', []);
 
 booksService.factory('Book', ['$resource', '$timeout',
 function ($resource, $timeout) {
 var api = $resource('api/v2/:isbn', {'isbn': '@id'});
 
 var promise;
 var pushing = false;
 
 api.pushGet = function (params, callback) {
 if (!pushing) {
 pushing = true;
 
 var refreshData = function () {
 api.get(params, function (book) {
 callback(book);
 
 promise = $timeout(
 function () {
 refreshData(params, callback);
 }, 4000);
 });
 };
 
 refreshData(params, callback);
 }
 };
 
 api.stopPushGet = function () {
 pushing = false;
 
 if (angular.isDefined(promise)) {
 $timeout.cancel(promise);
 promise = undefined;
 }
 };
 
 return api;
 }]); 

// book-info-website/public/javascripts/angular/services.js var booksService = angular.module('booksServices', []);
 
 booksService.factory('Book', ['$resource', '$timeout',
 function ($resource, $timeout) {
 var api = $resource('api/v2/:isbn', {'isbn': '@id'});
 …
 return api;
 }]);
 

MVVM Framework View View Model Model Remote API Browser Server 

// book-info-website/public/javascripts/angular/controllers.js booksControllers.controller(
 'DetailController',
 ['$scope', '$routeParams', 'Book',
 function ($scope, $routeParams, Book) {
 Book.pushGet({isbn: $routeParams.isbn}, function (book) {
 $scope.book = book;
 });
 
 $scope.$on('$destroy', function () {
 Book.stopPushGet();
 });
 }
 ]
 ); 

// book-info-website/public/javascripts/angular/services.js var promise;
 var pushing = false;
 
 api.pushGet = function (params, callback) {
 if (!pushing) {
 pushing = true;
 
 var refreshData = function () {
 api.get(params, function (book) {
 callback(book);
 
 promise = $timeout(
 function () {
 refreshData(params, callback);
 }, 4000);
 });
 };
 
 refreshData(params, callback);
 }
 }; 

// book-info-website/public/javascripts/angular/services.js api.stopPushGet = function () {
 pushing = false;
 
 if (angular.isDefined(promise)) {
 $timeout.cancel(promise);
 promise = undefined;
 }
 }; 

Alternatives? • React • Backbone • Ember 

Future of frontend development • Simpler than it looks • Has a lot of similarities with server side frameworks • Fast, as data is loaded after the bare minimum 

Express Contender for the worlds most boring logo 

Book Information Service Book Jacket API Rating API Book Info Website Browser 

Blocking Book Jacket API Rating API Book Info Website Book Info Website 

Non-blocking Book Jacket API Rating API Book Info Website Book Info Website 

– Express Demo “How likely is that it will break twice?” 

// book-info-website/app.js
 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 bookApi1 = require('./routes/book-api-v1');
 var bookApi2 = require('./routes/book-api-v2');
 
 var app = express();
 
 // view engine setup
 app.set('views', path.join(__dirname, 'views'));
 app.set('view engine', 'jade');
 
 // uncomment after placing your favicon in /public
 //app.use(favicon(__dirname + '/public/favicon.ico'));
 app.use(logger('dev'));
 app.use(bodyParser.json());
 app.use(bodyParser.urlencoded({ extended: false }));
 app.use(cookieParser());
 app.use(express.static(path.join(__dirname, 'public')));
 app.use("/assets/modules", express.static(__dirname + '/bower_components'));
 
 app.use('/', routes);
 app.use('/api/v1', bookApi1);
 app.use('/api/v2', bookApi2);
 
 // 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; 

// book-info-website/app.js … 
 var routes = require('./routes/index');
 var bookApi1 = require('./routes/book-api-v1');
 var bookApi2 = require('./routes/book-api-v2'); … app.use("/assets/modules", express.static(__dirname + '/bower_components'));
 
 app.use('/', routes);
 app.use('/api/v1', bookApi1);
 app.use('/api/v2', bookApi2); 
 

// book-info-website/routes/index.js
 var express = require('express');
 var router = express.Router();
 
 /* GET home page. */
 router.get('/', function (req, res, next) {
 res.render('index');
 });
 
 /* GET home page. */
 router.get('/partials/details.html', function (req, res, next) {
 res.render('partials/details');
 });
 
 /* GET home page. */
 router.get('/partials/list.html', function (req, res, next) {
 res.render('partials/list');
 });
 
 
 module.exports = router; 

// book-info-website/routes/index.js /* GET home page. */
 router.get('/', function(req, res, next) {
 res.render('index');
 }); … //- book-info-website/views/index.jade 
 doctype html
 html(lang="en" ng-app="booksApp")
 head
 title Book Info Website
 link(rel='stylesheet', href='/stylesheets/style.css')
 script(src='/assets/modules/angular/angular.js')
 script(src='/assets/modules/angular-resource/angular-resource.js')
 script(src='/assets/modules/angular-route/angular-route.js')
 script(src='/javascripts/angular/app.js')
 script(src='/javascripts/angular/services.js')
 script(src='/javascripts/angular/controllers.js')
 body
 div(ng-view) 

// book-info-website/routes/book-api-v1.js
 var express = require('express');
 
 var booksApiClient = require('./../api-client/books');
 
 var router = express.Router();
 
 router.get('/', function (req, res, next) {
 booksApiClient.findAll(function (err, books) {
 res.json(books);
 });
 });
 
 router.get('/:isbn', function (req, res, next) {
 booksApiClient.getBook(req.params.isbn, function (err, bookDetail) {
 res.json(bookDetail);
 });
 });
 
 module.exports = router; 

// book-info-website/routes/book-api-v1.js router.get('/', function (req, res, next) {
 booksApiClient.findAll(function (err, books) {
 res.json(books);
 });
 }); 

// book-info-website/api-client/books.js
 var makeHttpRequest = require('./client');
 
 var Books = function () {
 
 var endpoint = "http://book-jacket-api.herokuapp.com/";
 
 this.getBook = function (isbn, callback) {
 makeHttpRequest(endpoint.concat(isbn), callback)
 };
 
 this.findAll = function (callback) {
 makeHttpRequest(endpoint, callback)
 };
 };
 
 module.exports = new Books(); 

// book-info-website/api-client/client.js var http = require('http');
 
 module.exports = function (url, callback) {
 http.get(url, function (res) {
 var str = '';
 
 res.on('data', function (chunk) {
 str += chunk;
 });
 
 res.on('end', function () {
 var apiResponse = JSON.parse(str);
 
 callback(null, apiResponse);
 });
 }).on('error', function (e) {
 callback(e);
 });
 }; 

Book Information Service Book Jacket API Rating API Book Info Website Browser 

–Async Demo “What’s the worst that can happen?” 

// book-info-website/routes/book-api-v2.js
 
 var express = require('express');
 var async = require('async');
 var _ = require('underscore');
 
 var booksApiClient = require('./../api-client/books');
 var ratingsApiClient = require('./../api-client/ratings');
 
 var router = express.Router();
 
 router.get('/', function (req, res, next) {
 booksApiClient.findAll(function (err, books) {
 res.json(books);
 });
 });
 
 router.get('/:isbn', function (req, res, next) {
 async.parallel({
 'book': function (callback) {
 booksApiClient.getBook(req.params.isbn, function (err, bookDetail) {
 callback(err, bookDetail);
 });
 },
 'rating': function (callback) {
 ratingsApiClient.getRating(req.params.isbn, function (err, ratings) {
 callback(err, ratings);
 });
 }
 }, function (err, results) {
 _.extend(results.book, {'rating': results.rating});
 res.json(results.book);
 });
 });
 
 module.exports = router; 

// book-info-website/routes/book-api-v2.js router.get('/:isbn', function (req, res, next) {
 async.parallel({
 'book': function (callback) {
 booksApiClient.getBook(req.params.isbn, function (err, bookDetail) {
 callback(err, bookDetail);
 });
 }, 
 'rating': function (callback) {
 ratingsApiClient.getRating(req.params.isbn, function (err, ratings) {
 callback(err, ratings);
 });
 } 
 }, function (err, results) {
 _.extend(results.book, {'rating': results.rating});
 res.json(results.book);
 });
 });
 

Alternatives? • PHP + Using Guzzle Futures • PHP + Queues • Go/Other language with parallelisation 

Express • Non-blocking • Front-end Developer Friendly • Lightweight 

In conclusion • Cross functional teams require knowledge of other disciplines • MVVM frameworks are going to get more popular • MVVM frameworks require APIs • Use middleware to hide none public services 

http://www.happyjar.com/comic/pay-rise/ 

Any Questions? @PurpleBooth [email protected] https://joind.in/14285