Build powerfull and smart web applications with Symfony2

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

The Symfony2 stack

Core Bundles Third party libraries

Standalone Components

« A Bundle is a directory that has a well-de ned
structure and can host anything from classes to
controllers and web resources. »

Symfony2 follows standards
& best practices

-  RFC2616
-  PHPUnit
-  Jinja Templates
-  Design Patterns

Symfony is now easier
to install and con gure

http://symfony.com/download

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

Easy installation and con guration

Web con guration

Con gure the database access parameters

Start to use Symfony2 and happy coding J

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

{
/**
* @extra:Route("/hello/{name}")
*/
public function indexAction($name)
{
// ... do things

return $this->render('HelloBundle:Default:index.html.twig',
array('name' => $name));
}
}

Request handling

{
/**
* @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>


base.html.twig
layout.html.twig

index.html.twig

Smart URIs

Typical PHP URIs suck!!!

Smart URIs

Native routing mechanism

Smart URIs
{
/**
* @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

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

The Web Debug Toolbar

Symfony2 version environment environment
PHP Current Current response RecordedTimers Memory
logs Queries

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 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 ConfooContactBundleForm;

use SymfonyComponentFormForm;
use SymfonyComponentFormTextField;
use SymfonyComponentFormTextareaField;
use SymfonyComponentFormCheckboxField;

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

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'));
}
}

Expiration with Expires

{
/**
* @extra:Template
* @extra:Cache(expires="tomorrow")
*/
{

}
}

Expiration with Cache-Control

{
/**
* @extra:Template
* @extra:Cache(maxage="20", s-maxage="20")
*/
{

}
}

Native PHP Reverse Proxy Cache

Edge Side Includes

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

Security
Authentication & Authorization

Build powerfull and smart web applications with Symfony2

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