Web Development with Symfony

Web Development with Symfony Friday May 9th 2014 – Osijek
– Croatia

Hugo HAMON Head of training at SensioLabs Book author Speaker
at Conferences Symfony contributor @hhamon

What is Symfony2

Framework Philosophy Community

Symfony2 is a set of reusable, standalone, decoupled, and cohesive
PHP components that solve common web development problems.

Dependency Injection BrowserKit ClassLoader Config Console CssSelector Debug DomCrawler EventDispatcher
ExpressionLanguage Filesystem Finder Form HttpFoundation HttpKernel Locale Intl Icu OptionsResolver Process PropertyAccess Routing Security Serializer Stopwatch Templating Translation Validator Yaml

Symfony is also a full stack web framework made of
bundles and third party libraries.

Community

+1,000 code contributors

+700 documentation contributors

+2,200 community bundles

And many open source projects!

IDE Integration

NETBEANS

PHP Storm

Installation

Easy installation

Easy installation with Composer

The First Page

Configuration

Philosophy

# web/app.php use Symfony\Component\HttpFoundation\Request; $kernel = new AppKernel('prod', false); $kernel->loadClassCache();
$request = Request::createFromGlobals(); $response = $kernel->handle($request); $response->send(); $kernel->terminate($request, $response);

namespace Acme\DemoBundle\Controller; use Sensio\Bundle\FrameworkExtraBundle\[…]\Route; use Symfony\Component\HttpFoundation\Response; class DefaultController { /**
@Route("/hello/{name}") */ public function indexAction($name) { return new Response('Hello '.$name); } }

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

class DefaultController { /** * @Route("/schedule") * @Template */ public
function indexAction() { return [ 'title' => 'Schedule' ]; } }

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

Twig is a modern template engine for PHP §  Fast
§  Concise and rich syntax §  Automatic output escaping §  Modern features §  Extensible §  Flexible

{% extends "SensioConferenceBundle::layout.html.twig" %} {% block title 'Conference Schedule' %}
{% block content %} <h1> {{ title }} </h1> <ul> <li>HTTP Caching, 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"
/> {% block content '' %} {% endblock %}

<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" ... /> <title>{% block
title 'Welcome!' %}</title> <link … href="{{ asset('favicon.ico') }}" /> </head> <body> {% block body '' %} </body> </html>

layout.html.twig index.html.twig base.html.twig

Development Tools

Code Generators

$ php app/console generate:bundle

$ php app/console generate:doctrine:crud

Routing System

The router maps a url pattern to a set of
internal parameters.

/** * @Route( * "/{year}/talk/{month}/{day}/{slug}", * requirements={ * "year"="\d{4}", *
"month"="\d{2}", * "day"="\d{2}" * } * ) */ public function showAction($slug, $day, $month, $year) { // ... }

acme_blog_show: path: /{year}/talk/{month}/{day}/{slug} defaults: { _controller: AcmeBlogBundle:Blog:blog } requirements: year:
"\d{4}" month: "\d{2}" day: "\d{2}" schemes: https methods: GET host: blog.my-domain.com condition: "request.headers.get('User-Agent') matches '/firefox/i'" YAML Configuration

<?xml version="1.0" encoding="UTF-8" ?> <routes> <route id="acme_blog_show" path="/{year}/talk/{month}/{day}/{slug}" schemes="https" method="GET"
> <default key="_controller">AcmeBlogBundle:Blog:show</default> <requirement key="year">\d{4}</requirement> <requirement key="month">\d{2}</requirement> <requirement key="day">\d{2}</requirement> <condition>request.headers.get('User-Agent') matches '/firefox/i'<condition> </route> </routes> XML Configuration

/** @Route("/talk/{id}") */ function showAction(Talk $talk) { // ... }
Automatic Arguments Discovery

Database Handling

h"p://www.ﬂickr.com/photos/chanceprojects/

§ Database Abstraction Layer on top of PDO § Object Relational Mapper
§ Migrations support § Object Document Mapper (MongoDB) § Object XML Mapper (XML databases) Doctrine2 Support

/** @ORM\Entity */ class Talk { /** * @ORM\Id *
@ORM\GeneratedValue * @ORM\Column(type="integer") */ private $id; /** @ORM\Column(length=80) */ private $title; /** @ORM\Column(type="text") */ private $synopsis; /** @ORM\Column(type="datetime") */ private $schedule; /** @ORM\ManyToMany(targetEntity="Speaker", mappedBy="talks") */ private $speakers; }

Service Container

The service container centralizes the intelligence to create and initialize
objects.

services: user_manager: class: Acme\UserManager arguments: - "@event_dispatcher" - "@security.encoder_factory" -
"@doctrine.orm.entity_manager" - "@security.context" YAML Configuration

<?xml version="1.0" ?> <container> <services> <service id="user_manager" class="Acme\UserManager"> <argument type="service"
id="event_dispatcher"/> <argument type="service" id="security.encoder_factory"/> <argument type="service" id="doctrine.orm.entity_manager"/> <argument type="service" id="security.context" /> </service> </services> </container> XML Configuration

class appProdProjectContainer extends Container { protected function getUserManagerService() { $instance
= new Acme\UserManager( $this->get('debug.event_dispatcher'), $this->get('security.encoder_factory'), $this->get('doctrine.orm.default_entity_manager'), $this->get('security.context') ); $this->services['user_manager'] = $instance; return $instance; } } Service Factory Method

$manager = $this ->container ->get('user_manager') ; Service Lazy Loading

Data Validation

The validator component validates objects againsts a set of constraints.

/** @Assert\UniqueEntity("username") */ class User { /** * @Assert\NotBlank *
@Assert\Email */ private $username; /** * @Assert\NotBlank * @Assert\Length(min = 8, max = 32) */ private $password; // ... }

$user = new User(); $user->setUsername('[email protected]'); $user->setPassword('changeme'); $validator = $this->get('validator'); $errors
= $validator->validate($user); Validating an Object

Forms management

h"p://www.ﬂickr.com/photos/miahz/

namespace Sensio\UserBundle\Form; use Symfony\Component\Form\AbstractType; use Symfony\Component\Form\FormBuilderInterface; class UserType extends AbstractType
{ function buildForm(FormBuilderInterface $builder, …) { $builder ->add('username', 'email') ->add('password', 'password') ->add('submit', 'submit') ; } }

public function userAction(Request $request) { $user = new User(); $user->setUsername('[email protected]');
$form = $this->createForm(new UserType(), $user); $form->handleRequest($request); if ($form->isValid()) { // ... } return ['form' => $form->createView() ]; }

{{ form(form) }} Displaying the form

Automated Tests

h"p://www.ﬂickr.com/photos/kenstein/

UNIT TESTING

FUNCTIONAL TESTING

HTTP Caching

RFC2616

Expiration Validation

class DefaultController { /** * @Template * @Cache(expires="tomorrow") */ public

class DefaultController { /** * @Template * @Cache(maxage=120) */ public

HTTP Reverse Proxy Caching

varnish-cache.org

Edge Side Includes <esi:include src="http://..." />

No ESI

<esi:include … /> With ESI

Internationalization Localization

h"p://www.ﬂickr.com/photos/bwop/

<?xml version="1.0"?> <xliff version="1.2"> <file …> <body> <trans-unit id="1"> <source>Symfony2
is great</source> <target>J'aime Symfony2</target> </trans-unit> </body> </file> </xliff>

{% set message = 'Symfony2 is great' %} {{ message|trans
}} {% set message = 'My name is %name%!' %} {{ message|trans({'%name%': 'Hugo'}, "hello") }}

Authentication Authorizations

h"p://www.ﬂickr.com/photos/cstein96/

/** * @Security("has_role('ROLE_ADMIN')") */ public function editAction($id) { // granted
to perform an action... } Using annotations to secure an action

Using expression to secure an action /** * @Security( *
expression="is_granted('EDIT', article)" * ) */ public function editAction(Article $article) { // granted to perform an action... }

Questions? h"p://www.ﬂickr.com/photos/mkrigsman/

Web Development with Symfony

Web Development with Symfony

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