Symfony

SYMFONY 2
FRAMEWORK
INTRODUCTION
Artjom Kurapov
5th April of 2013

Major PHP frameworks
 Zend
 Symfony 1  2
 Code igniter  Kohana
 CakePHP
 Yii 2

Motivation
 Singleton
 Tight coupling
 Untestable
 Premature optimized
 Indescriptive names
 Duplication
 Single responsibility
 Open for extension,
Closed for modification
 LSP
http://phpmaster.com/liskov-substitution-principle/
 Interface segregation
 Dependency inversion

Functional vs fast
http://docs.phalconphp.com/en/latest/reference/benchmark/hello-world.html

Used with
 Similar to Zend - a collection of components,
which can be a full-stack framework
 Drupal 8 is using only some of the components
 eZ Publish 5 is using a full-stack
 PHPUnit, Propel, Doctrine - use Yaml, Console
 composer = package & dependency manager
 PSR-0..3 standards affect autoloading

Setup
 Download or install with composer:
composer create-project symfony/framework-standard-edition symfony/ 2.2.0
 Check for directory permissions & requirements
php ./app/check.php
 Open it in browser, get a 20mb wow effect
http://localhost/symfony/web/app_dev.php/

Directory structure
(Confusingasalways)
appenvironmentconfiguration
cache
config
logs
bin
src ourapplicationcode
Exove
CalendarBundle
Controller
Resourcesviews,css,imagesgohere
vendor externallibraries,usuallyincompany/projectstructure
symfony
doctrine
twig
web publicwillseeonlythispart

Low-level request flow
 Frontend bootstrap (web/app_dev.php) adds
autoloader, boots kernel, creates Request
 Kernel loads config, resolves URLto controller
 Controller loads model & view, can make a
subrequest and returns a Response
 Views usually use twig
 Models usually use doctrine

Routing with YAML
 app/config/routing.yaml

Routing - URL generation
AlsoaccessibleinviewsifyouuseTwig:

Controller
You don’t have toinherit base Controller

Controller + View
@Template uses Controller name to figure out template path..
src/Exove/DemoBundle/Resources/views/Demo/hello.html.twig

Assetic - resource links
Might not be a good idea if you use custom less / require.js

Doctrine
 ORM - different headache (due to abstraction)
 multiple db engine support
 Mostly, no direct SQLs, instead - chaining
 Alternative - DoctrineQL
 Migration support
 app/config/parameters.yml

Entity
An abstract object that gets extended with saving,
retrieving, searching interfaces…
It should not know how it is used or stored

Testing
 Config@app/config/config_test.yml
 Filesinsrc/*/*/Bundle/Tests
 abstractclassWebTestCaseextendsPHPUnit_Framework_TestCase

Conclusion
 Heavy and extensive
 Twig / Doctrine
 Functional with growing community

Symfony

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Editor's Notes