Presentazione introduttiva a Silex tenuta in occasione del 4 meeting mensile area Dev H-art.

1. © H-art 2011 | All Rights Reserved | H-art is a GroupM Company

2. Development area
meeting #4/2011
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3. SILEX
PHP Micro-framework
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4. Micro-che ?
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5. Micro-framework
• Funzionalità minime
• Leggeri
• Semplici
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6. Perfetti quando un framework è
“troppa roba”
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7. SILEX
http://silex-project.org/
https://github.com/fabpot/Silex
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8. Perchè silex ?
• 400 KB
• Ottima implementazione
• Basato su symfony 2 (riuso di componenti e knowledge)
• Customizzabile con estensioni
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9. SILEX
require_once __DIR__.'/silex.phar';
$app = new SilexApplication();
$app->get('/hello/{name}', function($name) {
return "Hello $name";
});
$app->run();
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10. SILEX
require_once __DIR__.'/silex.phar';
$app = new SilexApplication(); Il Framework
$app->get('/hello/{name}', function($name) {
return "Hello $name";
});
$app->run();
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11. SILEX
require_once __DIR__.'/silex.phar';
$app = new SilexApplication(); L’ applicazione
$app->get('/hello/{name}', function($name) {
return "Hello $name";
});
$app->run();
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12. SILEX
require_once __DIR__.'/silex.phar';
$app = new SilexApplication();
$app->get('/hello/{name}', function($name) {
return "Hello $name";
});
$app->run();
La action
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13. Una route
SILEX
require_once __DIR__.'/silex.phar';
$app = new SilexApplication();
$app->get('/hello/{name}', function($name) {
return "Hello $name";
});
$app->run();
La action
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14. Route
SILEX
Controller
require_once __DIR__.'/silex.phar';
$app = new SilexApplication();
$app->get('/hello/{name}', function($name) {
return "Hello $name";
});
$app->run();
La action
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15. SILEX
require_once __DIR__.'/silex.phar';
$app = new SilexApplication();
$app->get('/hello/{name}', function($name) {
return "Hello $name";
});
E si balla!!
$app->run();
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16. Un pò di più ?
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17. Before() e after()
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18. Posso definire dei comportamenti o delle operazioni da eseguire prima e dopo
ogni action passando delle closure ai filtri before e after
$app->before(function () {
// attivo una connesione a DB ?
// carico qualche layout generico ?
});
$app->after(function () {
// chiudo connessione a DB ?
//
});
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19. Gestione degli errori
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20. Posso definire dei comportamenti in caso di errore per fare in modo che
l’applicazione li notifichi in maniera “decente”
use SymfonyComponentHttpFoundationResponse;
use SymfonyComponentHttpKernelExceptionHttpException;
use SymfonyComponentHttpKernelExceptionNotFoundHttpException;
$app->error(function (Exception $e) {
if ($e instanceof NotFoundHttpException) {
return new Response('The requested page could not be
found.', 404);
}
$code = ($e instanceof HttpException) ? $e->getStatusCode() :
500;
return new Response('We are sorry, but something went
terribly wrong.', $code);
});
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21. Escaping
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22. Silex mette a disposizione il metodo escape() per ottenere l’escaping delle
variabili
$app->get('/name', function () use ($app) {
$name = $app['request']->get('name');
return "You provided the name {$app-
>escape($name)}.";
});
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23. Routing
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24. Variabili
$app->get('/blog/show/{id}', function ($id) {
...
});
$app->get('/blog/show/{postId}/{commentId}',
function ($postId, $commentId) {
...
});
$app->get('/blog/show/{postId}/{commentId}',
function ($commentId, $postId) {
...
});
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25. Converter
$app->get('/user/{id}', function ($id) {
// ...
})->convert('id', function ($id) { return (int)
$id; });
Il parametro $id viene passato alla
closure e non alla action che riceve
invece il valore restituito dalla
closure
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26. Converter
$userProvider = function ($id) {
return new User($id);
};
$app->get('/user/{user}', function (User $user) {
// ...
})->convert('user', $userProvider);
$app->get('/user/{user}/edit', function (User
$user) {
// ...
})->convert('user', $userProvider);
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27. Requirements
$app->get('/blog/show/{postId}/{commentId}',
function ($postId, $commentId) {
...
})
->assert('postId', 'd+')
->assert('commentId', 'd+');
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28. Default Values
$app->get('/{pageName}', function ($pageName) {
...
})
->value('pageName', 'index');
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29. Applicazioni Riusabili
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30. // blog.php
require_once __DIR__.'/silex.phar';
$app = new SilexApplication();
// define your blog app
$app->get('/post/{id}', function ($id) { ... });
// return the app instance
return $app;
$blog = require __DIR__.'/blog.php';
$app = new SilexApplication();
$app->mount('/blog', $blog);
$app->run();
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31. Ancora non basta ?
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32. Extensions
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33. Extensions incluse
• DoctrineExtension
• MonologExtension
• SessionExtension
• TwigExtension
• TranslationExtension
• UrlGeneratorExtension
• ValidatorExtension
Altre implementabili attraverso API
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34. Testing
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35. ... class FooAppTest extends WebTestCase
public function testInitialPage()
{
$client = $this->createClient();
$crawler = $client->request('GET', '/');
$this->assertTrue($client->getResponse()->isOk());
$this->assertEquals(1, count($crawler-
>filter('h1:contains("Contact us")')));
$this->assertEquals(1, count($crawler-
>filter('form')));
...
}
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36. ... class FooAppTest extends WebTestCase
Il browser
public function testInitialPage()
{
$client = $this->createClient();
$crawler = $client->request('GET', '/');
$this->assertTrue($client->getResponse()->isOk());
$this->assertEquals(1, count($crawler-
>filter('h1:contains("Contact us")')));
$this->assertEquals(1, count($crawler-
>filter('form')));
...
}
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37. ... class FooAppTest extends WebTestCase
Il parser della pagina
public function testInitialPage()
{
$client = $this->createClient();
$crawler = $client->request('GET', '/');
$this->assertTrue($client->getResponse()->isOk());
$this->assertEquals(1, count($crawler-
>filter('h1:contains("Contact us")')));
$this->assertEquals(1, count($crawler-
>filter('form')));
...
}
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38. ... class FooAppTest extends WebTestCase
Verifiche su contenuto e
public function testInitialPage() Response
{
$client = $this->createClient();
$crawler = $client->request('GET', '/');
$this->assertTrue($client->getResponse()->isOk());
$this->assertEquals(1, count($crawler-
>filter('h1:contains("Contact us")')));
$this->assertEquals(1, count($crawler-
>filter('form')));
...
}
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39. Q&A
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40. Risorse
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41. • http://silex-project.org/documentation
• http://www.slideshare.net/IgorWiedler/silex-the-symfony2-microframework
• http://codenugget.org/5-reasons-why-silex-is-king-of-all-php-micro
• https://github.com/igorw/silex-examples
• https://github.com/helios-ag/Silex-Upload-File-Example
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