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Silex - Symfony goes micro
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Igor Wiedler
October 21, 2011
Programming
14
11k
Silex - Symfony goes micro
Talk on the Silex microframework as given at symfonyday 2011.
Igor Wiedler
October 21, 2011
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Transcript
None
• phpBB • Symfony2 • Silex igorw
None
Silex Symfony goes micro μ
Silex is not Symfony
Microframework
None
What? • Bare bones • Routes mapped to controllers •
The ‘C’ of ‘MVC’ • REST • Single file app
Why?
Sometimes a full-stack framework is too much for a simple
task.
simple
What makes silex special?
• concise • extensible • testable
• concise • extensible • testable
• concise • extensible • testable
• concise • extensible • testable
• concise • extensible • testable
Http Kernel Interface
Response handle(Request $request)
client
request client
reponse client request
clean
PSR-0
None
Silex is not Symfony
Silex is a user interface for Symfony
require_once __DIR__.'/silex.phar'; $app = new Silex\Application(); $app->get('/', function() { return
"Hello world!"; });
Phar require_once __DIR__.'/silex.phar'; $app = new Silex\Application(); $app->get('/', function() {
return "Hello world!"; });
Application require_once __DIR__.'/silex.phar'; $app = new Silex\Application(); $app->get('/', function() {
return "Hello world!"; });
require_once __DIR__.'/silex.phar'; $app = new Silex\Application(); $app->get('/', function() { return
"Hello world!"; }); Controller
$app->run();
None
<IfModule mod_rewrite.c> RewriteEngine On RewriteBase /some/path RewriteCond %{REQUEST_FILENAME} !-f RewriteCond
%{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php [QSA,L] </IfModule>
server { location / { if (-f $request_filename) { break;
} rewrite ^(.*) /index.php last; } location ~ index\.php$ { fastcgi_pass /var/run/php5-fpm.sock; fastcgi_index index.php; include fastcgi_params; } }
Wait a minute!
Lambdas λ
$(function () { $("a").click(function (event) { alert("Thanks for visiting!"); });
});
PHP 5.3
$f = function ($a, $b) { return $a + $b;
}; $f(1, 2);
lazy $f = function () { exit; };
nested $f = function () { return function () {
return true; }; }; $g = $f(); $value = $g();
scope $outer = 'world'; $f = function () use ($outer)
{ $inner = 'hello'; return "$inner $outer"; }; => "hello world"
scope $helloWorld = function () { $outer = 'world'; $f
= function () use ($outer) { $inner = 'hello'; return "$inner $outer"; }; return $f(); }
passing $output = function ($info) { echo $info."\n"; }; $doStuff
= function ($output) { $output('doing some magic'); doMagic(); $output('did some magic'); };
factory $userFactory = function ($name) { return new User($name); };
// ... $user = $userFactory($_POST['name']);
Usage
$app->get('/', function () { return "Hello world!"; });
Dynamic Routing
$app->get('/hello/{name}', function ($name) use ($app) { return "Hello ".$app->escape($name); });
$app->get('/hello/{name}', function ($name) use ($app) { return "Hello ".$app->escape($name); });
Controllers
assert $app->get('/blog/{id}', function ($id) { ... }) ->assert('id', '\d+');
value $app->get('/{page}', function ($page) { ... }) ->value('page', 'index');
bind $app->get('/', function () { ... }) ->bind('homepage'); $app['url_generator']->generate('homepage')
bind $app->get('/blog/{id}', function ($id) { ... }) ->bind('blog_post'); $app['url_generator'] ->generate('blog_post',
array('id' => $id))
convert $app->get('/blog/{post}', function (Post $post) { ... }) ->convert('post', function
($post) use ($app) { $id = (int) $post; return $app['posts']->find($id); });
Before & After
$app->before(function () { ... }); $app->get('/', function () { ...
}); $app->after(function () { ... });
$app->before(function (Request $request) { $loggedIn = $request ->getSession() ->get('logged_in'); if
(!$loggedIn) { return new RedirectResponse('/login'); } });
$app->after(function (Request $request, Response $response) { // tweak the Response
});
$app->after(function ( Request $request, Response $response, ) use ($app) {
$response->headers->set('x-csrf-token', $app['csrf_token']); });
REST
• get • post • put • delete • head
• options • patch
$app->get('/posts/{id}', ...); $app->post('/posts', ...); $app->put('/posts/{id}', ...); $app->delete('/post/{id}', ...);
use Symfony\Component\HttpFoundation\Request; use Symfony\Component\HttpFoundation\Response; $app->post('/message', function (Request $request) { mail(
'
[email protected]
', 'New message', $request->get('body') ); return new Response('Email has been sent!', 201); });
Caching
Error Handling
use Symfony\Component\HttpFoundation\Response; $app->error(function (\Exception $e, $code) { return new Response('Whoops!',
$code); });
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException; throw new NotFoundHttpException("Could not find what you were
looking for.");
$app->abort(404, "Could not find the thing.");
$app['debug'] = true;
Redirecting
$app->get('/', function () use ($app) { return $app->redirect('/hello'); });
Pimple
50 NCLOC
Symfony2 DIC Pimple
Symfony2 DIC Pimple Container
Symfony2 DIC Pimple Container Builder
Symfony2 DIC Pimple Container Builder Extension
Symfony2 DIC Pimple Container Builder Extension Loader
Symfony2 DIC Pimple Container Builder Extension XML/Yaml Loader
Symfony2 DIC Pimple Container Builder Extension XML/Yaml Compiler Loader
Symfony2 DIC Pimple Container Builder Extension XML/Yaml Compiler Loader Container
Symfony2 DIC Pimple Container Builder Extension XML/Yaml Compiler Loader Container
ServiceProvider ( )
$container = new Pimple();
$app = new Silex\Application();
Parameters $app['some_parameter'] = 'value'; $app['asset.host'] = 'http://cdn.mysite.com/'; $app['database.dsn'] = 'mysql:dbname=myapp';
Services $app['some_service'] = function () { return new Service(); };
$service = $app['some_service'];
Dependencies $app['some_service'] = function ($app) { return new Service( $app['some_other_service'],
$app['some_service.config'] ); };
Shared $app['some_service'] = $app->share(function () { return new Service(); });
Protected $app['lambda_parameter'] = $app->protect( function ($a, $b) { return $a
+ $b; }); // will not execute the lambda $add = $app['lambda_parameter']; // calling it now echo $add(2, 3);
Exposed Services • debug • request • autoloader • routes
• controllers • dispatcher • resolver • kernel
Service Providers
interface ServiceProviderInterface { function register(Application $app); }
Core Service Providers • doctrine • form • http cache
• monolog • session • swiftmailer • symfony bridges • translation • twig • url generator • validator
Twig
$app->register( new Silex\ServiceProvider\TwigServiceProvider(), array( 'twig.path' => __DIR__.'/views', 'twig.class_path' => __DIR__.'/vendor/twig/lib',
) );
$app->get('/', function () use ($app) { return $app['twig']->render('hello.twig'); });
3rd Party • doctrine orm • pomm (postgres) • predis
• mongo • KyotoTycoon • memcache • rest • markdown • gravatar • buzz • config • solr • profiler • ...
Functional Testing
• src • app.php • web • index.php • tests
• bootstrap.php • YourTest.php
src/app.php require_once __DIR__.'/../vendor/silex.phar'; ... return $app;
web/index.php $app = require_once __DIR__.'/../src/app.php'; $app->run();
tests/bootstrap.php require_once __DIR__.'/../vendor/silex.phar';
use Silex\WebTestCase; class YourTest extends WebTestCase { public function createApp()
{ return require __DIR__.'/../src/app.php'; } // tests... } tests/YourTest.php
public function testAbout() { $client = $this->createClient(); $client->request('GET', '/about'); $response
= $client->getResponse(); $this->assertTrue($response->isOk()); $this->assertContains('trashbin', $response->getContent()); $this->assertContains('github', $response->getContent()); $this->assertContains('igorw', $response->getContent()); }
phpunit.xml.dist <?xml version="1.0" encoding="UTF-8"?> <phpunit backupGlobals="false" backupStaticAttributes="false" colors="true" convertErrorsToExceptions="true" convertNoticesToExceptions="true"
convertWarningsToExceptions="true" processIsolation="false" stopOnFailure="false" syntaxCheck="false" bootstrap="tests/bootstrap.php" > <testsuites> <testsuite name="YourApp Test Suite"> <directory>./tests/</directory> </testsuite> </testsuites> </phpunit>
$ phpunit
None
None
• smallish sites • well-defined scope • prototyping • restful
apis When to use
and many more...
The future
The future • Cookbooks
The future • Cookbooks • Best practices
The future • Cookbooks • Best practices • Symfony2 integration
The future • Cookbooks • Best practices • Symfony2 integration
• FOSUserBundle
The future • Cookbooks • Best practices • Symfony2 integration
• FOSUserBundle • Composer
on github fabpot/Silex fabpot/Pimple
silex.sensiolabs.org
Ω
Questions? joind.in/3699 @igorwesome speakerdeck.com /u/igorw