Introduction to symfony2

Introduction to

by Pablo Godel
Jan 11 2012 - South Florida PHP Users Group
Wednesday, January 11, 2012

Who Am I?
⁃ Born in Argentina, living in the US since 1999
⁃ PHP & Symfony developer
⁃ Founder of the PHP mailing list in spanish
⁃ Cofounder of ServerGrove Networks
⁃ Founded in 2005
⁃ provider of web hosting specialized in PHP, Symfony,
ZendFramework among others
⁃ Very active open source supporter through code
contributions and usergroups/conference sponsoring


History of Symfony


Releases

- symfony 1.0: January 2007
- symfony 1.2: November 2008
- symfony 1.4: November 2009

- Symfony 2.0: July 2011
- Symfony 2.1: Planned for early 2012


symfony 1.0
released on January 2007

“symfony is a full-stack framework, a library
of cohesive classes written in PHP”

- Several libraries put together (modiﬁed Mojavi, Propel, Prado
i18n, etc)
- Concepts borrowed from several languages and frameworks
- Routing, CLI, functional tests,YAML, helpers
- One of ﬁrst PHP frameworks to include a Web Debug Toolbar,
and an Admin Generator.


symfony 1.0
Highlights

- ORM integration: Propel and Doctrine
- YAML cascading configuration
- Web Debug Toolbar
- Admin Generator
- Environments
- CLI
- Functional Tests
- Template Caching
- Internationalization
- Documentation
- Plugins
- Awesome Community


symfony 1.0
Highlights - Web Debug Toolbar


symfony 1.0
Highlights - Admin Generator


symfony 1.0
Highlights - Command Line Interface


symfony 1.0
Highlights - Documentation

- A Gentle Introduction to symfony
- Practical symfony (jobeet tutorial)
- The symfony Reference Book
- More with symfony
- The API documentation

http://www.symfony-project.org/doc/1_4/

symfony 1.0
Highlights - Awesome Community

IRC #symfony & #symfony-devs

Google Groups
symfony-users http://groups.google.com/group/symfony-users
symfony-devs http://groups.google.com/group/symfony-devs
symfony-es http://groups.google.com/group/symfony-es

Wiki http://trac.symfony-project.org/wiki/

Forums http://forum.symfony-project.org/

Lots of Blogs

Conferences around the world: US, France, Germany,
Spain

symfony 1.0
Highlights - Plugins


symfony 1 vs. Symfony 2

Same philosophy

Rewritten from scratch



symfony 1 != Symfony2



If you used symfony 1.x

better forget about it.


Symfony 2

“First, Symfony2 is a reusable set of standalone, decoupled,
and cohesive PHP components that solve common web
development problems.
Then, based on these components, Symfony2 is also a
full-stack web framework.”

http://fabien.potencier.org/article/49/what-is-symfony2

Symfony 2

21 High Quality
Components


Symfony 2 Components

• DependencyInjection • Serializer
• EventDispatcher • Validator
• HttpFoundation • Security
• DomCrawler • Routing
• ClassLoader • Console
• CssSelector • Process
• HttpKernel • Config
• BrowserKit • Finder
• Templating • Locale
• Translation • Yaml
• Serializer • Form

All of them at GitHub: http://github.com/symfony

Symfony 2 Components

Components Documentation
http://symfony.com/doc/current/components/index.html

Blog post series about creating a framework based on
the Symfony2 Components
http://fabien.potencier.org/


Symfony 2
Highlights

• Rewritten from scratch for PHP 5.3
• Based on the HTTP specification
• Very stable and solid API (12 preview releases, 5 beta
releases, 6 release candidates, 9 stable releases)
• Extensible through the creation of Bundles (replacement for
sf1 plugins)
• Flexible configuration using YAML, XML, annotations or
PHP
• All configuration is compiled to PHP code and cached
• Lots of unit tests
• Source code audited by independent security firm thanks to
donations of the Symfony Community


Symfony 2
Highlights

• Extensible Configuration with Service Container/
Dependency Injection
• Complete redesign of Forms support
• Validations
• Extensible Security with Authentication/Authorization
• Advanced and powerful templating through Twig
• Routes configured with YAML, XML or Annotations
• ESI Caching support out of the box
• Assets management with Assetic
• Translations
• Environments


Symfony 2
Community

• 357 developers contributed to Symfony2
• 3000+ pull requests
• 969 977 bundles at knpbundles.com
• Same very active IRC and mailing lists support channels
• Community Gamification through SensioLabs Connect
• Symfony2 Ecosystem


Symfony 2
Highlights - SensioLabs Connect


Symfony 2
Highlights - Bundles


Symfony 2
Getting Started

http://symfony.com/download


Symfony 2
Getting Started

tar zxf Symfony_Standard_Vendors_2.0.9.tgz

or

unzip Symfony_Standard_Vendors_2.0.9.zip


Symfony 2
Getting Started

Distributions

A Symfony distribution is made up of Symfony2
components, a selection of bundles,
a directory structure, a default configuration.

http://symfony.com/distributions

Symfony 2
Getting Started

Symfony Standard Distribution
• Directory structure
• Default conﬁguration
• Bundles
⁃ DoctrineBundle
⁃ JMSSecurityExtraBundle
⁃ SensioDistributionBundle
⁃ SensioFrameworkExtraBundle
⁃ SensioGeneratorBundle
⁃ AsseticBundle

http://symfony.com/distributions

Symfony 2
Getting Started


Symfony 2
Directory Structure


Symfony 2
Conﬁguration Files - app/conﬁg.yml


Symfony 2
Conﬁguration Files - app/parameters.ini


Symfony 2
Conﬁguration Files - app/conﬁg_dev.yml


Browser

Request

Bootstrap (app.php)

Controller

Template

Response

Bootstrap (app.php)


Symfony 2
Bootstrap File - web/app.php


Controllers


Templates


Templating / Twig
Comments:
{# comments are not rendered #}

{# multi-line comments!
{{ var }}
#}
Output variables:
{{ var }}
{{ var | upper }}
{{ var | raw }}
{{ object.property }}
{{ true ? ‘yes’ : ‘no’ }}
http://twig.sensiolabs.org/

Templating / Twig

Blocks:
{% set var = ‘hello’ %}
{% set foo = var ~ ’ and goodbye’ %}

{% if foo is ‘bar’ %}
...
{% else %}
...
{% endif %}


Templating / Twig

Blocks:
{% for key, val in list %}

{{ loop.index }}. {{ val }}

{% else %}

No keys.

{% endfor %}


Templating / Twig
Extends:

{% extends "Bundle::layout.html.twig" %}

Include:

{% include “Bundle:Demo:template.html.twig” %}

Render:

{% render “Bundle:Demo:action” %}


Awesome Twig Presentations

Twig, The Flexible, Fast and Secure Template Language
for PHP - Fabien Potencier
http://www.slideshare.net/fabpot/twig-the-ﬂexible-fast-and-securetemplate-
language-for-php

Being Dangerous with Twig - Ryan Weaver
http://slideshare.net/weaverryan/being-dangerous-with-twig-symfony-
live-paris

Twig avanzado - Javier Eguiluz
http://www.slideshare.net/javier.eguiluz/twig-avanzado-sf2vigo (Spanish)


Templating / Twig
layout.html.twig


Templating / Twig
index.html.twig


Bundles


Bundles

Everything in Symfony2 is
contained in Bundles


Bundles

Even Symfony2 is
a collection of Bundles


Symfony 2
Bundles Registration - app/AppKernel.php


Bundles Showcase


Bundles Showcase

And many many more!


Forms


Forms
Deﬁnition


Forms
Presentation


Forms
Processing


Web Debug Toolbar
&
Proﬁler


Web Debug Toolbar / Proﬁler


CLI, Generator Commands
Demo


Twig Silex

Ecosystem

ORM & ODM

Deployments
BDD Framework Web Acceptance Testing


Who uses Symfony2?


You?


You should :-)


Questions?


Thank you!

Slides: http://slideshare.net/pgodel

Twitter: @pgodel
IRC Freenode: pgodel
E-mail: pablo@servergrove.com


Introduction to symfony2

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