symony2 a next generation php framework

Symfony2The Next Generation

PHP FrameworkRyan Weaver@weaverryan

Thursday, May 12, 2011

Who is this dude?

• Co-author of the Symfony2 Docs

• Core Symfony2 contributor

• Founder of KnpLabs US

• Boyfriend of the much more talented @leannapelham

http://www.knplabs.com/enhttp://www.github.com/weaverryan


http://www.knplabs.com/en

http://www.knplabs.com/en

http://www.github.com/weaverryan

http://www.github.com/weaverryan

Quality. Innovation. Excitement.

• Your symfony/Symfony2 development experts

• Active in a ton of open source initiatives

• Consulting, application auditing and training

KnpLabs

http://bit.ly/symfony-training


http://bit.ly/knp-training


Act 1:

What is Symphony?Symfony!


A Bunch of Standalone LibsDoctrine2 DBALRouting HttpFoundation

Form Validator

Security

Monolog Twig

SwiftMailer

AsseticDependencyInjection

HttpKernel

BrowserKit

ClassLoader

ConsoleSerializer

Yaml

Translation

Templating

Process FinderDomCrawler

CSSSelector

EventDispatcher

Doctrine2 ORM

Doctrine2 ODM


A Bunch of Standalone LibsDoctrine2 DBALRouting HttpFoundation

Form Validator

Security

Monolog Twig

SwiftMailer


HttpKernel

BrowserKit

ClassLoader

ConsoleSerializer

Yaml

Translation

Templating

Process FinderDomCrawler

CSSSelector

EventDispatcher

Doctrine2 ORM

Doctrine2 ODM

Symfony is a group of standalone components and

other standalone PHP libraries

Decoupled building blocks for any web application


Doctrine2 DBALRouting HttpFoundation

Form Validator

Security

Monolog

Twig

SwiftMailer


HttpKernel

BrowserKit

ClassLoader

ConsoleSerializer Yaml

Translation

TemplatingProcess

FinderDomCrawler

CSSSelector

EventDispatcher Doctrine2 ORM

Doctrine2 ODM

• A set of bundles containing configuration and bridge classes

• These glue the components together, giving the developer a consistent experience

What is the Symfony2 Framework?


Doctrine2 DBALRouting HttpFoundation

Form Validator

Security

Monolog

Twig

SwiftMailer


HttpKernel

BrowserKit

ClassLoader

ConsoleSerializer Yaml

Translation

TemplatingProcess

FinderDomCrawler

CSSSelector

EventDispatcher Doctrine2 ORM

Doctrine2 ODM

FrameworkBundle SecurityBundle DoctrineBundle

MonologBundleTwigBundle SwiftmailerBundle

WebProfilerBundle AsseticBundle

The Symfony2 Framework


FrameworkBundle SecurityBundle

MonologBundleTwigBundle

WebProfilerBundle

The Flexibility of Bundles• A bundle is like a plugin, except that even the core framework is implemented as bundles

• Your code is an equal citizen with the core

AcmeBlogBundle

AcmeAccountBundleAcmeTwigBundle


Symfony2 is a set of standalone PHP component libraries, glued together by a group of removable “bundles”


Act 2:

Keep Things Simple


From space, the Web is stupid-simple

Client(e.g. browser) Your App

/foo

the request

<h1>FOO!</h1>

the response


HTTP Request-Response

• Your job is always to generate and return a response

• Symfony’s goal is to:• take care of repetitive tasks (e.g. routing)• allow your code to be organized• offer optional tools for complex tasks (e.g. security, forms, etc)

• to stay the hell out of your way!


Keep it simple: write code that represents your business logic - don’t bend to your framework


Act 3:

Symfony in Action


• Symfony offers “distributions” (think Ubuntu)

• Download the “Standard Distribution” to instantly have a functional application

• Default Project Structure• Common Sense default configuration• Some demo pages to play with

Start developing immediately!!!

Symfony Distributions


Step 1: Get it!

http://symfony.com/download




Step 2: Unzip it!

$ cd /path/to/webroot

$ tar zxvf /path/to/Symfony_Standard_Vendors_2.0.0PR11.tgz


Step 3: Run it!

http://localhost/Symfony/web/config.php




Step 3: Run it!

• This page identifies any problems with your setup

• Fix them, then click “Configure your Symfony Application online” to continue


Step 3: Configure it!

If you’re into GUI’s, Symfony offers one for setting up your

basic configuration


Finished!

This *is* your first Symfony2

page


Act 4:

Let’s create some pages


The 3 Steps to a Page

Step1: Symfony matches the URL to a route

Step2: Symfony executes the controller (a PHP function) of the route

Step3: The controller (your code) returns a Symfony Response object

/hello/ryan

<h1>Hello ryan!</h1>

the request!

the response!

the edge of a giant flower!


• Our goal: to create a hello world-like app

• in two small steps...

Hello {insert-name}!


Step1: Define a route

_welcome: pattern: / defaults: { _controller: AcmeDemoBundle:Welcome:index }/

You define the routes (URLs) of your app

/hello/ryanhello_demo: pattern: /hello/{name} defaults: { _controller: AcmeDemoBundle:Meetup:hello }


Add the following route toapp/config/routing.yml

** Routes can also be defined in XML, PHP and as annotations

hello_demo: pattern: /hello/{name} defaults: { _controller: AcmeDemoBundle:Meetup:hello }

Step1: Define a route



Step 2: Symfony executes the controller of the route

AcmeDemoBundle:Meetup:hello

is a shortcut for

Acme\DemoBundle\Controller\MeetupController::helloAction()

Symfony executes this PHP method


Step2: Create the controller<?php// src/Acme/DemoBundle/Controller/MeetupController.phpnamespace Acme\DemoBundle\Controller;

use Symfony\Component\HttpFoundation\Response;use Symfony\Bundle\FrameworkBundle\Controller\Controller;

class MeetupController extends Controller{ public function helloAction($name) { return new Response('Hello '.$name); }}


Step2: Create the controller<?php// src/Acme/DemoBundle/Controller/MeetupController.phpnamespace Acme\DemoBundle\Controller;

use Symfony\Component\HttpFoundation\Response;use Symfony\Bundle\FrameworkBundle\Controller\Controller;

class MeetupController extends Controller{ public function helloAction($name) { return new Response('Hello '.$name); }}

OMG - no base controller class required!


use Symfony\Component\HttpFoundation\Response;

public function helloAction($name){ return new Response('Hello '.$name);}

The Controller returns a Symfony Response object

This is where *your* code goes

Returning a Response object is the only requirement of a controller


use Symfony\Component\HttpFoundation\Response;

public function helloAction($name){ return new Response('Hello '.$name);}

Routing Placeholders


The route matches URLs like /hello/*

And gives you access to the {name} value


It’s Alive!

http://localhost/Symfony/web/app_dev.php/hello/ryan




2 steps to a page

• Create a route that points to a controller

• Do anything you want inside the controller, but eventually return a Response object


That was easy... what are some other tools I can choose

to use?


Rendering a Template

• A template is a tool that you may choose to use

• A template is used to generate “presentation” code (e.g. HTML)

• Keep your pretty (<div>) code away from your nerdy ($foo->sendEmail($body)) code


Render a template in the controller

public function helloAction($name){ $content = $this->renderView( 'AcmeDemoBundle:Meetup:hello.html.twig', array('name' => $name) ); return new Response($content);}

Do It!


Do it!Create the template file

{# src/Acme/DemoBundle/Resources/views/Meetup/hello.html.twig #}

Hello {{ name }}

This is Twig

Twig is a fast, secure and powerful templating engine

We *LOVE* Twig... but

Symfony2 fully supports Twig and regularPHP templates


It’s Still Alive!





Twig knows all kinds of tricks

• Learn more about Twig:

“Hands on Symfony2” on Slideshare http://bit.ly/hands-on-symfony2

“Being Dangerous with Twig” on Slideshare http://bit.ly/dangerous-with-twig

Official Documentation http://www.twig-project.org


http://bit.ly/hands-on-symfony2

http://bit.ly/hands-on-symfony2

http://bit.ly/dangerous-with-twig

http://bit.ly/dangerous-with-twig

Act 5:

Shortcuts via Annotations


The optional FrameworkExtraBundle lets you use annotations to do

less work


Put the route right on your controller

/** * @extra:Route("/hello/{name}", name="hello_demo") */public function helloAction($name){$content = $this->renderView( 'AcmeDemoBundle:Meetup:hello.html.twig', array('name' => $name)); return new Response($content);}


Put the route right on your controller

/** * @extra:Route("/hello/{name}", name="hello_demo") */public function helloAction($name){$content = $this->renderView( 'AcmeDemoBundle:Meetup:hello.html.twig', array('name' => $name)); return new Response($content);}

The PHP comments are called “annotations”

Symfony can use annotations to read routing config

Your route and controller are in the same place!


Instead of rendering a template, tell Symfony to do it for you

/** * @extra:Route("/hello/{name}", name="hello_demo") * @extra:Template() */public function helloAction($name){ return array('name' => $name);}


Controller: AcmeDemoBundle:Meetup:hello

Template: AcmeDemoBundle:Meetup:hello.html.twig

/** * @extra:Route("/hello/{name}", name="hello_demo") * @extra:Template() */public function helloAction($name){ return array('name' => $name);}


If you choose to follow conventions, you can take

advantage of certain shortcuts


Add security

/** * @extra:Route("/hello/admin/{name}") * @extra:Secure(roles="ROLE_ADMIN") * @extra:Template() */public function helloAdminAction($name){ return array('name' => $name);}


Add caching

/** * @extra:Route("/hello/{name}) * @extra:Template() * @extra:Cache(maxage="86400") */public function helloAction($name){ return array('name' => $name);}


Act 5:

The Killer Features of Symfony2


#1 Crazy-Decoupled & Extensible

• Composed of nearly 30 independent libraries

• Your code has as many rights as the core code

• Heavy use of the observer pattern (i.e. events)

• Standards Compliant (e.g. PSR-0)


#2 The Developer Experience

• You’re in the driver’s seat, not the framework

• Great effort has gone into expressive exception messages at every potential pain point

• The Web Debug Toolbar and Profiler


The web debug toolbar


The Profiler


#3 HTTP Caching

• Instead of inventing a caching strategy, Symfony uses the HTTP Cache specification

public function helloAction($name){ $response = // ... $response->setMaxAge(86400);

return $response;}


#3 HTTP Caching

• Symfony2 ships with a reverse proxy built in pure PHP

• Swap it out for Varnish, Squid or another other HTTP cache

• Native support for edge side includes (ESI)


#4 The Security Component

• Based on the Security Component of the Spring Framework

• Firewalls can authenticate users via any method: HTTP Auth, X.509 certificate, form login, Twitter, etc, etc

• Framework for advanced ACLs via Doctrine


#5 Silex: The Microframework

• Microframework built from Symfony2 Components

require_once __DIR__.'/silex.phar';

$app = new Silex\Application();

$app->get('/hello/{name}', function($name) { return "Hello $name"; });

$app->run();

http://silex-project.org/

• It’s just that easy


http://silex-project.org

http://silex-project.org

#6 The hyperactive community

• 190+ core contributors

• 90+ documentation contributors

• 223 open source Symfony2 bundles

• 74 open source Symfony2 projects

... and counting ...


Symfony2Bundles.org

• 223 open source bundles• 74 open source projects

http://symfony2bundles.org/


http://symfony2bundles.org

http://symfony2bundles.org

And lot’s more

• Cache-warming framework

• Routing can be dumped as Apache rewrite rules

• Service container can be dumped to Graphviz

• RESTful APIS support via the RestBundle

https://github.com/FriendsOfSymfony/RestBundle




After-Dinner Mint

Standalone PHP Libraries from the Symfony Community


Assetic

• PHP asset management framework

• Run CSS and JS through filters• LESS, SASS and others• Compress the assets

• Compile CSS and JS into a single file each

https://github.com/kriswallsmith/assetic




Behat + Mink

• Behavioral-driven development framework

http://behat.org/

• Write human-readable sentences that test your code (and can be run in a browser)


http://behat.org

http://behat.org

Gaufrette

• PHP filesystem abstraction library

• Read and write from Amazon S3 or FTP like a local filesystem

https://github.com/knplabs/Gaufrette

// ... setup your filesystem

$content = $filesystem->read('myFile');$content = 'Hello I am the new content';

$filesystem->write('myFile', $content);




Imagine

• PHP Image manipulation library

• Does crazy things and has crazy docs

use Imagine\Image\Box;use Imagine\Image\Point;

$image->resize(new Box(15, 25)) ->rotate(45) ->crop(new Point(0, 0), new Box(45, 45)) ->save('/path/to/new/image.jpg');

https://github.com/avalanche123/Imagine




Deployment with Capifony

• Capistrano deployment for symfony1 and Symfony2

http://capifony.org/

$ cap deploy:setup $ cap deploy $ cap deploy:rollback




The RestBundle

• For a fully-featured RESTful API solution try out the RestBundle

• Provides a view layer to enable format agnostic controllers





And early support from a few big names


PhpStorm

• PHP IDE now supports Twig Templates

http://www.jetbrains.com/phpstorm/




Support for Orchestra

• Orchestra is a PHP platform for deploying, scaling and managing your PHP applications.

• They’re awesome...

• And they support Symfony2!

http://orchestra.io/

https://orchestra.tenderapp.com/kb/frameworks/symfony2






Last words


Symfony2 is...

• Fast as hell• Infinitely flexible• Fully-featured• Driven by a huge community

• Not released yet...Currently at beta1


Backwards Compatibility breaks are possible, but will be

well-documented


So dive in!


Thanks!Questions?

Symfony2 Trainingin Nashville

Join us May 19th & 20th

Ryan Weaver@weaverryan


Who is this dude?

• Co-author of the Symfony2 Docs

• Core Symfony2 contributor

• Founder of KnpLabs US

• Big geek

http://www.twitter.com/weaverryanhttp://www.github.com/weaverryan


http://www.twitter.com/weaverryan

http://www.twitter.com/weaverryan

Quality. Innovation. Excitement.

• symfony/Symfony2 development

• Consulting & application auditing

• Symfony2 Training

KnpLabs


• Right here in Nashville: May 19th & 20th

• real coding, real project• Doctrine2, forms, security, caching, etc• Cool libraries like Assetic, Imagine, Behat• Lot’s more

• Or join is in New York City: June 6th & 7th

Symfony2 Training

http://bit.ly/symfony-training




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