Build powerfull and smart web applications with Symfony2

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Build smart and powerful web applications with Symfony2

Built around standalone and decoupled components…

… and a full-stack framework based on those components

Application bundles Third party bundles

Standalone Components

Core Bundles Third party libraries

The Symfony2 stack

« A Bundle is a directory that has a well-de"ned structure and can host anything from classes to

controllers and web resources. »

What makes Symfony2 unique?

Symfony2 follows standards & best practices

-  RFC2616 -  PHPUnit

-  Jinja Templates -  Design Patterns

Symfony is now easier to install and con"gure

http://symfony.com/download

Download the Standard Edition that hosts the framework, standard bundles and a default application architecture.

Several distributions available

Easy installation and con!guration

Web con!guration Con"gure the database access parameters

Start to use Symfony2 and happy coding J

Want to give it a try?

Symfony2 Philosophy

« Basically, Symfony2 asks you to convert a Request into a Response »

Request handling

class DefaultController extends Controller { /** * @extra:Route("/hello/{name}") */ public function indexAction($name) { // ... do things return new Response(sprintf('Hello %s!', $name)); } }

Request handling

class DefaultController extends Controller { /** * @extra:Route("/hello/{name}") */ public function indexAction($name) { // ... do things return $this->render('HelloBundle:Default:index.html.twig', array('name' => $name)); } }

Request handling

class DefaultController extends Controller { /** * @extra:Route("/schedule") * @extra:Template */ public function indexAction() { $title = 'Confoo 2011 Conferences Schedule'; return array('title' => $title); } }

Templating

{% extends "ConfooConferenceBundle::layout.html.twig" %} {% block content %} <h1> {{ title }} </h1> <ul> <li>Caching on the Edge, by Fabien Potencier</li> <li>HipHop for PHP, by Scott Mac Vicar</li> <li>XDebug, by Derick Rethans</li> <li>...</li> </ul> {% endblock %}

TWIG Template Engine

Twig is a modern template engine for PHP

§  Fast §  Concise and rich syntax §  Automatic output escaping § Modern features §  Extensible §  Flexible

Template inheritance

{% extends "ConfooConferenceBundle::layout.html.twig" %} {% block content %} <h1> {{ title }} </h1> <ul> <li>Caching on the Edge, by Fabien Potencier</li> <li>HipHop for PHP, by Scott Mac Vicar</li> <li>XDebug, by Derick Rethans</li> <li>...</li> </ul> {% endblock %}

{% extends "::base.html.twig" %} {% block body %} <img src="/images/logo.gif" alt="Confoo 2011"/> {% block content %}{% endblock %} {% endblock %}

<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>{% block title %}Welcome!{% endblock %}</title> <link rel="shortcut icon" href="{{ asset('favicon.ico') }}" /> </head> <body> {% block body %}{% endblock %} </body> </html>

layout.html.twig

index.html.twig

base.html.twig

Smart URIs

Typical PHP URIs suck!!!

Smart URIs

Native routing mechanism

Smart URIs

class DefaultController extends Controller { /** * @extra:Route("/{year}/talk/{month}/{day}/{slug}") * @extra:Template */ public function showAction($slug, $day, $month, $year) { // Get a talk object from the database $talk = ...; return array('talk' => $talk); } }

Parameter converter

class DefaultController extends Controller { /** * @extra:Route("/talk/{id}") * @extra:Template */ public function showAction(Talk $talk) { return array('talk' => $talk); } }

Easy Debugging

The Web Debug Toolbar

Symfony2 version PHP environment Current environment Current response Recorded logs Timers Memory Queries

Exception stack traces

Recorded logs

The Pro!ler application

Database Management

Doctrine 2 Library

§  Database Abstraction Layer on top of PDO

§  Object Relational Mapper

§ Migrations support

§  Object Document Mapper (MongoDB)

§  Object XML Mapper ( XML databases)

De!ning entities as POPO /** * @orm:Entity */class Talk{ /** * @orm:Id * @orm:GeneratedValue * @orm:Column(type="integer") */ public $id; /** @orm:Column(length=80, nullable=false) */ public $title; /** @orm:Column(type="text") */ public $synopsis; /** @orm:Column(type="datetime") */ public $schedule; /** @orm:ManyToMany(targetEntity="Speaker", mappedBy="talks") */ public $speakers;}

Validation

§  Validate POPOs (properties & methods)

§  Easy con"guration with annotations

§  Easy to customize and extend

Validating Plain PHP Objects

class ContactRequest { /** @validation:NotBlank */ public $message; /** * @validation:Email * @validation:NotBlank */ public $sender; } }

Forms Handling

Forms management

§  Transparent layer on top of your domain object

§  Native CSRF protection

§  Coupled to the Validation framework

§  Twig integration

Designing a basic form class

namespace Confoo\ContactBundle\Form; use Symfony\Component\Form\Form; use Symfony\Component\Form\TextField; use Symfony\Component\Form\TextareaField; use Symfony\Component\Form\CheckboxField; class ContactForm extends Form { protected function configure() { $this->add(new TextField('sender'))); $this->add(new TextareaField('message')); } }

Processing a form

public function contactAction() { $contactRequest = new ContactRequest(); $form = ContactForm::create(...); $form->bind($this->get('request'), $contactRequest); if ($form->isValid()) { // do things with validated data } return array('form' => $form); }

Prototyping the rendering with Twig

{% extends 'ConfooContactBundle::layout.html.twig' %} {% block content %} <form action="#" method="post"> {{ form_field(form) }} <input type="submit" value="Send!" /> </form> {% endblock %}

Functional Testing

Functional testing

Simulating an end-user browsing scenario and testing the Response

Functional Testing

class DefaultControllerTest extends WebTestCase { public function testIndex() { $client = $this->createClient(); $crawler = $client->request('GET', '/schedule'); $this->assertTrue( $crawler->filter('html:contains("Fabien Potencier")')->count() > 0 ); $this->assertTrue($client->getResponse()->headers->has('expires')); } }

HTTP Compliance (RFC2616)

Expiration / Validation

Expiration with Expires

class DefaultController extends Controller { /** * @extra:Route("/schedule") * @extra:Template * @extra:Cache(expires="tomorrow") */ public function indexAction() { $title = 'Confoo 2011 Conferences Schedule'; return array('title' => $title); } }

Expiration with Cache-Control

class DefaultController extends Controller { /** * @extra:Route("/schedule") * @extra:Template * @extra:Cache(maxage="20", s-maxage="20") */ public function indexAction() { $title = 'Confoo 2011 Conferences Schedule'; return array('title' => $title); } }

Native PHP Reverse Proxy Cache

Varnish / Squid

Edge Side Includes

<esi:include src="http://..." />

Security Authentication & Authorization

Thank You!

Build powerfull and smart web applications with Symfony2

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