HTTP/1.1 200 OK
Date: Fri, 02 Nov 2012 02:14:17 GMT
Cache-Control: private, max-age=90
Set-Cookie: username=anonymous;
Content-Type: text/html; charset=UTF-8
Hello Hugo!
Response
use Symfony\Component\HttpFoundation\Cookie;
use Symfony\Component\HttpFoundation\Response;
$username = new Cookie('username', $name);
$response = new Response('Hello Hugo!');
$response->setMaxAge(90);
$response->headers->setCookie($username);
$response->send();
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use Symfony\Component\HttpFoundation\Response;
$response = new Response();
$response->setCharset('UTF-8');
$response->setEtag('abcdef');
$response->headers->set('Content-Type', 'application/json');
if ($response->isNotModified($request)) {
$response->send();
}
$response->setContent('{ "name": "John Doe"}');
$response->setStatusCode(200);
$response->setPublic();
$response->setSharedMaxAge(3600);
$response->prepare($request);
$response->send();
Caching
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Session Management
use Symfony\Component\HttpFoundation\Session;
$storage = new Storage\Handler\NativeSessionStorage();
$session = new Session\Session($storage);
$session->start();
// Saving data into the session
$session->set('cart', array(1, 2, 3));
$cart = $session->get('cart');
$session->save();
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2.
Routing
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Bidirectional Router
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Router in action
Router
R1
R2
R3
R3
R
Route
/hello/hugo
/home
/about
/hello/{name}
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Configuring Routes with PHP
use Symfony\Component\Routing\RouteCollection;
use Symfony\Component\Routing\Route;
$routes = new RouteCollection();
$routes->add('post', new Route(
'/blog/{id}/{slug}',
array('controller' => 'BlogController::post'),
array('id' => '\d+')
));
Matching a Route
use Symfony\Component\Routing\Matcher\UrlMatcher;
use Symfony\Component\Routing\RequestContext;
$context = new RequestContext($_SERVER['REQUEST_URI']);
$matcher = new UrlMatcher($routes, $context);
$params = $matcher->match('/blog/42/symfony-2');
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Generating URLs
use Symfony\Component\Routing\RequestContext;
use Symfony\Component\Routing\Generator\UrlGenerator;
// ...
$context = new RequestContext($_SERVER['REQUEST_URI']);
$generator = new UrlGenerator($routes, $context);
echo $generator->generate('post', array(
'id' => '42',
'slug' => 'symfony-components',
'page' => '2',
));
// Generates /blog/42/symfony-components?page=2
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The all-in-one Router
$locator = new FileLocator(array(__DIR__.'/config'));
$router = new Router(
new YamlFileLoader($locator),
'routing.yml',
array('cache_dir' => __DIR__.'/cache'),
new RequestContext($_SERVER['REQUEST_URI']),
);
$params = $router->match('/blog/42/symfony');
$url = $router->generate('blog');
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3.
Http Kernel
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Kernel in action
Kernel
Response
Request
Where the
magic
happens!
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Kernel in action
// index.php
use Symfony\Component\HttpFoundation\Request;
$request = Request::createFromGlobals();
$request->overrideGlobals();
$kernel = new DrupalKernel(...);
$response = $kernel->handle($request);
$response->prepare($request);
$response->send();
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The HttpKernelInterface
namespace Symfony\Component\HttpKernel;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
interface HttpKernelInterface
{
const MASTER_REQUEST = 1;
const SUB_REQUEST = 2;
public function handle(
Request $request,
$type = self::MASTER_REQUEST, $catch = true);
}
use Symfony\Component\HttpKernel\HttpKernelInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
class LegacyKernel implements HttpKernelInterface
{
public function handle(Request $request, ...)
{
$module = $request->query->get('module');
$action = $request->query->get('action');
require_once 'config.php';
if (!controller_exists($module, $action)) {
$html = render_view('error', '404');
return new Response($html, 404);
}
$html = include_controller($module, $action);
return new Response($html, 200);
}
}
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Wrapping a legacy application
// index.php
use Symfony\Component\HttpFoundation\Request;
$request = Request::createFromGlobals();
$request->overrideGlobals();
$kernel = new LegacyKernel();
$response = $kernel->handle($request);
$response->prepare($request);
$response->send();
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4.
Event Dispatcher
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No content
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Real World Example
$order = new Order();
$order->add('Cheeseburger', 3);
$order->add('Caesar Salad', 1);
$order->add('Coffee', 4);
$cashier = new Cashier();
$cashier->dispatch($order);
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public function dispatch(Order $order)
{
if ($order->has('Cheeseburger')) {
$this->cookCheesburger($order->getQty('Cheeseburger'));
}
if ($order->has('Caesar Salad')) {
$this->cookCaesarSalad($order->getQty('Caesar Salad'));
}
if ($order->has('Coffee')) {
$this->cookCoffee($order->getQty('Coffee'));
}
// ...
}
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No content
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public function dispatch(Order $order)
{
// ...
if ($order->has('Pizza')) {
$qty = $order->getQty('Pizza');
$this->cookPizza($qty);
}
// ...
}
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use Symfony\Component\EventDispatcher\EventDispatcher;
$cashier = new EventDispatcher();
$listeners[] = array(new CheesburgerCooker(), 'onMealCook');
$listeners[] = array(new CaesarSaladCooker(), 'onMealCook');
$listeners[] = array(new CoffeeCooker(), 'onMealCook');
$listeners[] = array(new PizzaCooker(), 'onMealCook');
foreach ($listeners as $listener) {
$cashier->addListener('meal.cook', $listener);
}
Using the Event Dispatcher
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$cashier = new EventDispatcher();
// ...
$order = new Order();
$order->add('Cheeseburger', 3);
$order->add('Caesar Salad', 1);
$order->add('Coffee', 4);
$order->add('Pizza', 1);
$event = new MealEvent($order);
$cashier->dispatch('meal.cook', $event);
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use Symfony\Component\EventDispatcher\Event;
class MealEvent extends Event
{
public $order;
public function __construct(Order $order)
{
$this->order = $order;
}
}
Designing an event
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class PizzaCooker
{
public function onMealCook(MealEvent $event)
{
if (!$event->order->has('Pizza')) {
return;
}
$quantity = $event->order->getQuantity('Pizza');
// ... cook the pizza!!!
}
}
Designing a listener (cooker)
abstract class AbstractCommand extends Command
{
// ...
protected function createDirectory($directory)
{
$filesystem = $this->getFilesystem();
try {
$filesystem->mkdir($directory);
} catch (IOException $e) {
throw new \RuntimeException('...', 0, $e);
}
}
}
Example taken from Propel2
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7.
Finder
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No content
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use Symfony\Component\Finder\Finder;
$finder = new Finder();
$finder
->files()
->in(__DIR__.'/src/Symfony/Bundle/FrameworkBundle')
->exclude('Tests')
->ignoreVCS(true)
->name('/Controller/')
;
foreach ($finder->sortByName() as $file) {
echo $file->getFilename()."\n";
}
Using the Finder Component
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// Filter by name
$finder->directories()->name('Tests');
$finder->files()->name('*.php');
$finder->files()->name('/\.php$/');
$finder->files()->notName('*.rb');
// Filter by size
$finder->files()->size('< 1.5K');
$finder->files()->size('>= 1K')->size('<= 2K');
// Filter by date
$finder->date('since yesterday');
// Limiting the depth
$finder->depth('== 0');
$finder->depth('< 3');
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$filter = function (\SplFileInfo $file) {
if (strlen($file) > 10) {
return false;
}
};
$finder->files()->filter($filter);
Custom filters
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class MagentoFinder extends Symfony\Component\Finder\Finder
{
public function __construct()
{
parent::__construct();
$this
->name('*.php')
->name('*.phtml')
->name('*.xml')
->exclude(array(
'lib',
'shell',
'app/Mage.php',
'app/code/core',
'app/code/community',
'app/design/frontend/default',
'app/design/frontend/enterprise/default',
'app/design/frontend/base',
'app/design/adminhtml/default')
)
;
}
}
#!/usr/bin/env php
$loader = require __DIR__.'/vendor/autoload.php';
$loader->add('Hangman', __DIR__.'/src');
use Symfony\Component\Console\Application;
use Acme\Command\HangmanPlayCommand;
$application = new Application();
$application->add(new HangmanPlayCommand());
$application->run();
The Console Script
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namespace Acme\Command;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
class HangmanPlayCommand extends Command
{
protected function configure() { ... }
protected function execute(
InputInterface $input,
OutputInterface $output
) { ... }
}
Creating a new Command Class
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protected function configure()
{
$this
->setName('hangman:play')
->setDescription('Play the famous Hangman game')
->addArgument('name', InputArgument::REQUIRED,
'Your name')
->addOption('length', 'l',
InputOption::VALUE_REQUIRED)
->setHelp('The complete manual ...');
}
Documenting the Command
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protected function execute($input, $output)
{
$words = new WordList();
$words->load(__DIR__.'/../../../data/words.txt');
$length = $input->getOption('length', 8);
$name = $input->getArgument('name');
$game = new Game($words->getRandomWord($length));
// ...
}
Adding the business logic
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protected function execute($input, $output)
{
// ...
$dialog = $this->getHelperSet()->get('dialog');
$output->writeln('Welcome '.$name.' to the Hangman Game!');
while (!$game->isOver()) {
$letter = $dialog->ask($output, 'Type a letter: ');
$game->tryLetter($letter);
$output->writeLn(implode(' ', $game->getSolution()));
}
if ($game->isWon()) {
$output->writeln('Congratulations!');
} else {
$output->writeln('Game Over!');
}
// ...
}
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No content
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Some purposes
Generating les
Deploying les
Dumping con guration
Clearing caches
Generating documentation
Running a web server
Sending batch emails…
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9.
Translation
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No content
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Basic Usage
$selector = new MessageSelector();
$trans = new Translator('fr', $selector);
$trans->setFallbackLocale('en');
$loader = new XliffFileLoader();
$trans->addLoader('xliff', $loader);
$trans->addResource('yaml', '/fr.yml', 'fr');
$trans->trans('Hello %name%', array(
'%name%' => $name
));
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XLIFF Support
Hello %name%
Bonjour %name%
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Usage in Behat
class TranslatedLoader implements LoaderInterface
{
private $translator;
// ...
public function load(ContextInterface $context)
{
foreach ($context->getTranslationResources() as $path) {
$extension = pathinfo($path, PATHINFO_EXTENSION);
if ('yml' === $extension) {
$this->translator->addResource(
'yaml', $path, basename($path, '.yml'),
'behat.definitions'
);
}
// ...
}
}
}
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10.
Dependency Injection
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What’s dependency injection?
« Dependency Injection is where
components are given their
dependencies through their
constructors, methods, or directly
into elds. »
http://picocontainer.org/injection.html
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Real World Example
class Database
{
private $dbh;
function __construct(PDO $dbh) {
$this->dbh = $dbh;
}
function execute($query) {
// ...
}
}
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$container->setParameter('foo', 'bar');
$container->getParameter('dbal.dsn');
$dbal = $container->get('dbal');
The Service Container
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Real World Example
class Database
{
private $dbh;
function __construct(PDO $dbh) {
$this->dbh = $dbh;
}
function execute($query) {
// ...
}
}
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Initializing the Container
$container = new ContainerBuilder();
$params = array(
'dbal.dsn' => 'mysql:host=localhost;dbname=demo',
'dbal.user' => 'root',
'dbal.password' => 'secret',
);
foreach ($params as $name => $value) {
$container->setParameter($name, $value);
}
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Registering a service
$container = new ContainerBuilder();
// ...
$container
->register('dbal.pdo_handler', 'PDO')
->addArgument('%dbal.dsn%')
->addArgument('%dbal.user%')
->addArgument('%dbal.password%')
;
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Injecting service references
$container = new ContainerBuilder();
// ...
$reference = new Reference('dbal.pdo_handler');
$container
->register('dbal', 'Database')
->addArgument($reference)
;
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Describing services with XML
mysql:...
root
secret
%dbal.dsn%
%dbal.user%
%dbal.password%
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Describing services with XML
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12.
Validator
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The Validator Component
use Symfony\Component\Validator\Validator;
use Symfony\Component\Validator\Mapping\ClassMetadataFactory;
use Symfony\Component\Validator\Mapping\Loader\StaticMethodLoader;
use Symfony\Component\Validator\ConstraintValidatorFactory;
use Symfony\Component\Validator\Constraints\Email;
$validator = new Validator(
new ClassMetadataFactory(new StaticMethodLoader()),
new ConstraintValidatorFactory()
);
$validator->validateValue('[email protected]', new Email());
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Validating PHP Objects
use Symfony\Component\Validator\Mapping\ClassMetadata;
use Symfony\Component\Validator\Constraints;
class Post
{
public $title;
public $body;
static public function loadValidatorMetadata(ClassMetadata $metadata)
{
$metadata->addPropertyConstraint('title', new Constraints\NotNull());
$metadata->addPropertyConstraint('title', new Constraints\NotBlank());
$metadata->addPropertyConstraint('body', new Constraints\Length(array(
'max' => 10
)));
}
}