Ran Mizrahi - Symfony2 meets Drupal8

Ran Mizrahi - Symfony2 meets Drupal8

• 1.
  For start –let’s think of this simple task! All we would like to do is echo query string param to the screen.. // Route: hello?name=world $hello = $_GET[‘name’]; printf(‘Hello %s’ , $hello); // Outputs ‘world’ and a warning Think about that!
• 2.
  Symfony2 meets Drupal8 Author: Ran Mizrahi (@ranm8) Open Source Department Leader
• 3.
  About CodeOasis • CodeOasisspecializes in advanced web solutions. • Large variety of customers (from startups to retail companies and enterprises) • Two main technology environments: • Open Source – PHP, JS and rich HTML5 and CSS3 client side applications • Microsoft .NET
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  Drupal is Awesome!!! !?!?!!? • End users - A way to create your own tailored made CMS - It’s great for our end users • Salesmen - Known brand with many major use cases! - It’s great for a salesman
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  Drupal SUCKS foryour’e looking Well, maybe just if developers!! for a framework
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  Drupal Started asa CMS and evolved to a CMF! The Problems: • Larger websites are developed using Drupal content management abilities – Lots of code is written. • BIG learning curve for both junior and experienced developers – Learn the “Drupal Way” (Procedural AOP) • Lack of web development drivers/components • Legacy code – Well, like every 11 years old software..
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  What is Symfony2?? "Symfony2is a reusable set of standalone, decoupled, and cohesive PHP components that solves common web development problems.” Fabian Potencier – Symfony’s project lead
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  So, why useSyfmony2 in Drupal 8 • Symfony2 provides a great set of standalone, independent PHP components that solve common web problems. (HttpFoundation, ClassLoader, EventDispatcher, etc.) • Move to the next generation PHP OOP features that are available from PHP 5.3 and above • The PSR (PHP Standard Recommendation) standard – Allows easy-lazy-class-loader (by not bootstrapping code we don’t need).
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  Symfony2 Components inDrupal 8
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  PSR (PHP RecommendedStandards) • Set of PHP recommended standards by agreed and embraced by PHP most popular projects (Symfony, Drupal, Zend, CakePHP, Joomla, phpBB, etc.) • Suggested coding standards for: • Naming conventions for autoloading (PSR-0) • Basic coding standards (PSR-1) • Coding style guide (PSR-2)
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  ClassLoader • ClassLoader loadsyour project classes automatically if they follow the PSR-0 standard naming convention • One universal class autoloader that follows PHP known standards • Lazy-loading-class-loader
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  ClassLoader Example require_once __DIR__ .’/ClassLoader/UniversalClassLoader.php'; use SymfonyComponentClassLoaderUniversalClassLoader; $loader = new UniversalClassLoader(); $loader->register(); // Now we can register some namespaces… $loader->registerNamespace(‘Symfony’, __DIR__ . ‘/src’);
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  HttpFoundation • HttpFoundation wrapsHTTP specification (PHP super globals - $_GET, $_SESSION, $_POST, $_COOKIE, $_FILE, etc. for request and echo, header, setcookie, etc. for response) with OO layer • It provides abstraction for HTTP requests, responses, cookies, session, uploaded files, etc.
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  HttpFoundation Let’s start witha simple task: // Route: hello?name=world $hello = $_GET[‘name’]; printf(‘Hello %s’ , $hello); // Outputs ‘world’ and a warning It turns out to be not that simple, now we’ve got PHP warning: // Route: hello?name=world $hello = isset($_GET[‘name’]) ? $_GET[‘name’] : ‘World’; printf(‘Hello %s’ , $hello); // Outputs ‘world’ OK, what now?! Yes, we have XSS issue )-: Let’s fix…
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  HttpFoundation // Route: hello?name=world $hello= isset($_GET[‘name’]) ? $_GET[‘name’] : ‘World’; printf(‘Hello %s’ , htmlspecialchars($hello, END_QUOTES, ‘UTF-8’)); // Outputs ‘world’ Hard job for a simple task and makes our code look… UGLY!
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  HttpFoundation This is howour code will look like using HttpFoundation: // /hello?name=world use SymfonyComponentHttpFoundationRequest; use SymfonyComponentHttpFoundationResponse; $request = Request::createFromGlobals(); echo ‘Hello’ . $request->query->get(‘name’ , ‘World’); // Outputs ‘world’ And it’s great for unit testing (-: class HelloTest extends PHPUnit_Framework_TestCase { public function testHello() { $request = Request::create('/?name=world', 'GET'); $helloClass = new Hello(); $content = $helloClass->sayHello(); $this->assertsEquals(’Hello world’, $content); } }
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  EventDispatcher • The EventDispatcheris lightweight implementation of the Observer design pattern • Provides the ability to dispatch and listen to events. use SymfonyComponentEventDispatcherEventDispatcher; use SymfonyComponentEventDispatcherEvent; $dispatcher = new EventDispatcher(); $dispatcher->addListener(‘new_node’ , function(Event $event) { // React to the event }); $dispatcher->dispatch(‘new_node’);
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  EventDispatcher So how willit fit in Drupal (Larry Garfield’s prediction ) • Drupal 8 will have both hooks and EventDispatcher • EventDispatcher will be closer to the core, hooks further out • Drupal 9, maybe only event dispatcher ?!? I hope so (-:
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  Templates - Twig(Maybe?) What is Twig? • Twig is a template engine for PHP • Uses it’s own template syntax, originally inspired from Jinja and Django (According to Wikipedia) • Symfony2 uses Twig as main template engine • Twig was written by Fabian Potencier
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  Templates - Twig(Maybe?) PHPTemplate: <div> <?php if ($content): ?> <span><?php echo $content; ?></span> <span><?php echo htmlspecialchars($content, ENT_QUOTES, ‘UTF-8’); ?> </span> <?php endif; ?> </div> Twig: <div> {% if content %} <span>{{ content }}</span> <span>{{ content|escape }}</span> {% endif %} </div>
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  Templates - Twig(Maybe?) Why Twig is good for us: • Secure • Front-end developer friendly (No PHP knowledge is required • Not Drupal-proprietary. • Great way to make sure that logics won’t find a place on Drupal templates (-:
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  Contact me @ranm8on twitter Mail : ranm@codeoasis.com