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Best Practices in Symfony2
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Andreas Hucks
June 04, 2013
Programming
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Best Practices in Symfony2
Given at International PHP Conference 2013
Andreas Hucks
June 04, 2013
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Transcript
Best Practices in Symfony2 IPC Spring 2013 Berlin, June 4th
Andreas Hucks
@meandmymonkey Andreas Hucks Trainer & Consultant at SensioLabs Deutschland
Best Practices
Bad Practices
symfony Day 2009
Chapter One A Clean Project
Naming Things in Symphony • Follow PSR-0, PSR-1, PSR-2 •
Find a common scheme for your team • Be explicit • Be consistent
Care about your coding style • Again - follow PSR-0,
PSR-1, PSR-2 • Use PHPCSFixer http://goo.gl/tEK4y
.gitignore /web/bundles/ /app/bootstrap.php.cache /app/cache/* /app/config/parameters.yml /app/logs/* /build/ /vendor/ /bin/ /composer.phar
/data/uploads .idea add your own
.gitignore /web/bundles/ /app/bootstrap.php.cache /app/cache/* /app/config/parameters.yml /app/logs/* /build/ /vendor/ /bin/ /composer.phar
/data/uploads .idea should to be in your global .gitignore
.gitignore /web/bundles/ /app/bootstrap.php.cache /app/cache/* /app/config/parameters.yml /app/logs/* /build/ /vendor/ /bin/ /composer.phar
/data/uploads .idea maybe this too
.gitignore /web/bundles/ /app/bootstrap.php.cache /app/cache/* /app/config/parameters.yml /app/logs/* /build/ /vendor/ /bin/ /composer.phar
/data/uploads .idea this.
Committing parameters.yml is a Three Kitten Offense
Remove Acme\*
Bundle Naming... Vendor\AwesomeBundle vs. Vendor\Bundle\AwesomeBundle
Bundle Naming Vendor\AwesomeBundle vs. Vendor\Bundle\AwesomeBundle
FAIL a.k.a. „because I can“ • MyCompleteAppBundle (ok for small
projects) • MyAppNeedingGlobalResourcesBundle • MyBundleInsideAnotherBundleBundle
What should go into a Bundle • Bundles should be
self-contained • Sets of Features • Examples: Forum, AdminPanel... • Configured in /app/config
Your config options • YAML • XML • Annotations •
INI • PHP
Your config options • YAML • XML • Annotations •
INI • PHP meh.
Your config options • YAML • XML • Annotations •
INI • PHP special use cases
Your config options • YAML • XML • Annotations •
INI • PHP not for everything
Your config options • YAML • XML • Annotations •
INI • PHP Routing, Bundle Config, Parameters Services Validators, ORM/ODM
Nest your routing files
Chapter Two Controllers
• Put Controllers on a Diet • Decouple them
Try to lose the Boilerplate
@Template([name])
@Cache(...)
Inject the Request into Controllers
New in 2.3: handleRequest()
Events for add-on actions
Persistence Handlers
Persistence Handlers
Using the BaseController? Wrap calls to the Container
Chapter Three Dependency Injection
Injecting the Container
But... but Symfony is doing it!
...\TwigBundle\Extension\AssetsExtension
It‘s because of Scopes!
Solution: Synchronized Services (>= 2.3)
Alternative: Providing the Request (< 2.3)
Alternative: Providing the Request (< 2.3)
Service Organization
Split up Service Definitions
Dynamic Loading of Service Definitions
Use Semantic Configuration!
The Container as a Registry
Instead: Proper Service Configuration
Binding to the Environment
Instead: Use Your config files
Miscellaneous • Use XML for Service Definitions • Remember you
can use Environment Variables (Apache, Nginx, ...) • Use %kernel.root_dir% as a reference
Intermezzo Random Tips
PHP • Use 5.4, it‘s faster • Use APC (or
one of the alternatives)
Composer • Use the --optimize-autoloader option
Doctrine • Activate Metadata Cache • Activate Query Cache •
Use factory-service to register Repositories & ObjectManagers as Services
Security • Make sure there are no leaks in the
security.yml access_control section! • Better: Check Authorization in Controller, possibly use SecurityExtraBundle
Translation • Work with translation keys instead of full text
to avoid breaking translations
Searching • Look for „Symfony2“ (without the space)
Read the Documentation (and the Changelogs)
Chapter Four Forms
Forms in Controllers
• Couples Form setup to Controller • No reusability
Better: Use Type Classes
Always set the data_class
Using Data in Constructors
Use Form Events for Related Data
Define Types as Services
Define Types as Services
Don‘t disable CSRF
Thanks! Questions? Please give feedback: http://goo.gl/kwEqY