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Web Development with
Symfony Friday May 9th 2014 – Osijek – Croatia
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Hugo HAMON
Head of training at SensioLabs
Book author
Speaker at Conferences
Symfony contributor
@hhamon
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What is
Symfony2
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Framework
Philosophy
Community
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Symfony2 is a set of reusable,
standalone, decoupled, and
cohesive PHP components that
solve common web development
problems.
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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
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Symfony is also a full stack
web framework made of
bundles and third party
libraries.
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Community
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+1,000 code contributors
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+700 documentation contributors
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+2,200 community bundles
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And many open source projects!
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IDE Integration
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NETBEANS
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PHP Storm
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Installation
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Easy installation
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Easy installation with Composer
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The First Page
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Configuration
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Philosophy
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# 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);
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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);
}
}
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class DefaultController extends Controller
{
/** @Route("/hello/{name}") */
public function indexAction($name)
{
return $this->render(
'AcmeDemoBundle:Default:index.html.twig',
[ 'name' => $name ]
);
}
}
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class DefaultController
{
/**
* @Route("/schedule")
* @Template
*/
public function indexAction()
{
return [ 'title' => 'Schedule' ];
}
}
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{% extends "SensioConferenceBundle::layout.html.twig" %}
{% block content %}
{{ title }}
- HTTP Caching, by Fabien Potencier
- HipHop for PHP, by Scott Mac Vicar
- XDebug, by Derick Rethans
- ...
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Twig is a modern template engine for PHP
§ Fast
§ Concise and rich syntax
§ Automatic output escaping
§ Modern features
§ Extensible
§ Flexible
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{% extends "SensioConferenceBundle::layout.html.twig" %}
{% block title 'Conference Schedule' %}
{% block content %}
{{ title }}
- HTTP Caching, by Fabien Potencier
- HipHop for PHP, by Scott Mac Vicar
- XDebug, by Derick Rethans
- ...
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{% extends "::base.html.twig" %}
{% block body %}
{% block content '' %}
{% endblock %}
{% block content '' %}
{% endblock %}
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{% block title 'Welcome!' %}
{% block body '' %}
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layout.html.twig
index.html.twig
base.html.twig
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Development
Tools
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Code Generators
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$ php app/console generate:bundle
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$ php app/console generate:doctrine:crud
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Routing System
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The router maps a url
pattern to a set of internal
parameters.
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/**
* @Route(
* "/{year}/talk/{month}/{day}/{slug}",
* requirements={
* "year"="\d{4}",
* "month"="\d{2}",
* "day"="\d{2}"
* }
* )
*/
public function showAction($slug, $day, $month, $year)
{
// ...
}
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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
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AcmeBlogBundle:Blog:show
\d{4}
\d{2}
\d{2}
request.headers.get('User-Agent') matches '/firefox/i'
XML Configuration
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/** @Route("/talk/{id}") */
function showAction(Talk $talk)
{
// ...
}
Automatic Arguments Discovery
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Database
Handling
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h"p://www.flickr.com/photos/chanceprojects/
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§ Database Abstraction Layer on top of PDO
§ Object Relational Mapper
§ Migrations support
§ Object Document Mapper (MongoDB)
§ Object XML Mapper (XML databases)
Doctrine2 Support
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/** @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;
}
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Service
Container
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The service container
centralizes the intelligence
to create and initialize
objects.
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services:
user_manager:
class: Acme\UserManager
arguments:
- "@event_dispatcher"
- "@security.encoder_factory"
- "@doctrine.orm.entity_manager"
- "@security.context"
YAML Configuration
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XML Configuration
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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 $instance;
}
}
Service Factory Method
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$manager = $this
->container
->get('user_manager')
;
Service Lazy Loading
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Data
Validation
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The validator component
validates objects againsts a
set of constraints.
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/** @Assert\UniqueEntity("username") */
class User
{
/**
* @Assert\NotBlank
* @Assert\Email
*/
private $username;
/**
* @Assert\NotBlank
* @Assert\Length(min = 8, max = 32)
*/
private $password;
// ...
}
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$user = new User();
$user->setUsername('x@abc.com');
$user->setPassword('changeme');
$validator = $this->get('validator');
$errors = $validator->validate($user);
Validating an Object
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Forms
management
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h"p://www.flickr.com/photos/miahz/
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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')
;
}
}
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public function userAction(Request $request)
{
$user = new User();
$user->setUsername('x@abc.com');
$form = $this->createForm(new UserType(), $user);
$form->handleRequest($request);
if ($form->isValid()) {
// ...
}
return ['form' => $form->createView() ];
}
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{{ form(form) }}
Displaying the form
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Automated
Tests
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h"p://www.flickr.com/photos/kenstein/
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UNIT TESTING
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FUNCTIONAL TESTING
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HTTP
Caching
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RFC2616
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Expiration
Validation
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class DefaultController
{
/**
* @Template
* @Cache(expires="tomorrow")
*/
public function indexAction()
{
return [ 'title' => 'Schedule' ];
}
}
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class DefaultController
{
/**
* @Template
* @Cache(maxage=120)
*/
public function indexAction()
{
return [ 'title' => 'Schedule' ];
}
}
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HTTP Reverse
Proxy Caching
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varnish-cache.org
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Edge Side Includes
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No ESI
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With ESI
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Internationalization
Localization
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h"p://www.flickr.com/photos/bwop/
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Symfony2 is great
J'aime Symfony2
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{% set message = 'Symfony2 is great' %}
{{ message|trans }}
{% set message = 'My name is %name%!' %}
{{ message|trans({'%name%': 'Hugo'}, "hello") }}
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Authentication
Authorizations
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h"p://www.flickr.com/photos/cstein96/
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/**
* @Security("has_role('ROLE_ADMIN')")
*/
public function editAction($id)
{
// granted to perform an action...
}
Using annotations to secure an action
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Using expression to secure an action
/**
* @Security(
* expression="is_granted('EDIT', article)"
* )
*/
public function editAction(Article $article)
{
// granted to perform an action...
}
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Questions?
h"p://www.flickr.com/photos/mkrigsman/