Get Started, Move Fast & Break things in Symfony2

Grab some coffee and let's get your project moving on Symfony2! Since its 2.0 release in 2011, a lot of fantastic tools and best-practices have been built up around Symfony. In this talk, we'll start a real project and learn about some of these tools that can make us dangerous as quickly as possible! Symfony2 lets you write beautiful, maintainable code, and I'll give you 5 tips to do just that while staying aggressive with getting features out the door. RAD!

Transcript

1. PHP Tutorial Screencasts Get Started, Move Fast & Break things in Symfony2
2. Who is this beach bum? • The Symfony “Docs” guy ! • KnpLabs US - Symfony consulting, training, Kumbaya ! • Writer for KnpUniversity.com screencasts knplabs.com github.com/weaverryan PHP Tutorial Screencasts
3. Success!
4. Success?
5. How do we define it?
6. http://www.flickr.com/photos/martin_heigan/4544138976/ A I delivered the Feature on time?
7. I came in under budget? B http://www.flickr.com/photos/68751915@N05/6355360253/
8. I delivered exactly what the client asked for? C http://www.flickr.com/photos/adesigna/4090782772/
9. I delivered exactly what the client asked for? needed C http://www.flickr.com/photos/adesigna/4090782772/
10. D The app has XX% test coverage? http://www.flickr.com/photos/sidelong/246816211/
11. E My controllers average 6.35 lines? http://www.flickr.com/photos/dharder9475/5381826270/
12. F I use Symfony2 with 55 Bundles! http://www.flickr.com/photos/sallypics/60614323/
13. Which one is it?
14. Define good… - BDD/TDD is *good*, right? - Skinny controllers are definitely good… I think? - 80%+ test coverage - is that good?
15. We measure success entirely subjectively
16. thus…
17. Best practices & tools for “success” are subjectively decided
18. We can aim for better!
19. Measuring Success X*Quality - (1-X)*Speed = Success Score ! where X is 0-1, related to many factors X = the Quality factor
20. 1. Uncertainty 2. Mission Critical Features 3. Budget X-Factors
21. 1. How much uncertainty does the project have? 2. Are you building what you *know* will be successful, or is it more of an experiment? 3. High Uncertainty => Low X (less quality, faster!) Uncertainty
22. 1. Are you protecting bank data or patient records? 2. Or are you selling Halloween costumes for hamsters? 3. Mission Critical Features => High X (high quality, slower!) Mission Critical Features http://www.etsy.com/listing/111520104/superman-hamster-costume-hamster-pet
23. 1. No budget? No choice, fast! 2. No budget => low X (less quality, faster!) Budget
24. Let’s build *success*
25. Success: ! Find what it means for *your* project and hit it!
26. Writing a lot of tests may mean lower success
27. Or it may save yer arse
28. Or it may save yer arse @grmpyprogrammer … from him
29. (Technical) Debt is not bad
30. try buying a house without debt
31. Manage and leverage technical debt
32. RAD in Symfony2
33. Symfony2 lends naturally to high quality apps (high X)
34. How can we go fast? http://www.flickr.com/photos/curtisperry/141526923/
35. 1. Shorten all the things 2. Routing 3. Querying for data 4. Rendering the template 5. Fixtures Speed up 6. Forms 7. Form theming 8. Service config 9. Security 10. Creating “special” services
36. 1 http://hyperboleandahalf.blogspot.com/2010/06/this-is-why-ill-never-be-adult.html Shorten all the Things
37. A bundle called “App”
38. Brought to you by:
39. 1. Allows you to have a bundle called simply “App” 2. Shortens many things 3. KnpRadBundle has a philosophy (optional) of only 1 bundle per project KnpRadBundle “App”
40. a 2 Routing http://www.flickr.com/photos/14617207@N00/4471342864/
41. A Routing File Bundle name Controller
42. router:debug
43. 1. Automatic CRUD routes 2. Ability to remove/add more 3. FOSRestBundle does this well for REST controllers 4. SensioFrameworkExtraBundle allows for annotation routing KnpRadBundle Routing
45. 3 Querying for Data
46. Automatically Queried
47. ! 1. Normally configured via a ParamConverter annotation 2. Optional if: A. You type-hint the argument B. The routing wildcard is “id” or matches the argument name SensioFrameworkExtraBundle
49. A Routing File teams is available as an argument to any method in the controller
50. 1. SensioFrameworkExtraBundle doesn’t work to query for an array of objects 2. “teams” variable can be used across all actions KnpRadBundle Resources
51. 4 Rendering the Template
52. Will Render App:Team:show.html.twig App\Controller\TeamController::showAction
53. But wait, the template doesn’t exist yet!!!
55. 1. Finds the template and renders it 2. Creates it if it doesn’t exist 3. SensioFrameworkExtraBundle also does this, but requires an annotation KnpRadBundle
56. 5 Fixtures! http://www.flickr.com/photos/ciordia/8162313/
57. AppBundle/Resources/fixtures/fixtures.yml
58. Brought to you by: Alice & Faker https://github.com/nelmio/alice https://github.com/fzaninotto/Faker
59. AppBundle/Resources/fixtures/fixtures.yml Create 50 users
60. AppBundle/Resources/fixtures/fixtures.yml Create 50 users Create 50 users Faker gives you fake data functions
61. AppBundle/Resources/fixtures/fixtures.yml Create 50 users Create 50 users Associate with a random team Faker gives you fake data functions
62. Load any Resources/fixtures/*.yml file easily with DoctrineFixturesBundle
64. 6 Forms! http://www.flickr.com/photos/theworldisatwarwegonnastopit/4443672898/
66. Creates and binds the form
67. Creates and binds the form Creates and binds the form Shortcut methods on KnpRadBundle base Controller
68. 1. Form is created automatically for you based on the public getters/setters OR it finds a {ClassName}Type and uses it 2. Form is automatically bound (if PUT/ POST) KnpRadBundle Form Shortcuts
69. 7 Form Theming!
70. 1. Uses custom form themes for Twitter Bootstrap 2. Install and it works 3. Comes with way too many other features, but can easily be used for *just* the form theming MopaBootstraBundle
71. 8 Service Configuration!
72. 1. Normally done with a services.yml or services.xml 2. KnpRadBundle automatically loads a Resources/config/services.yml Service Configuration
73. JMSDiExtraBundle allows annotation configuration
75. 1. JmsDiExtraBundle saves you a little bit of time, but I don’t love it 2. Seems to have cache issues JmsDiExtraBundle?
76. Security 9 http://www.flickr.com/photos/carbonnyc/2294144289/
78. Check for user roles
79. Check for user roles Custom object permissions (with voters)
80. SensioFrameworkExtraBundle ! 1. Flexible by using voters to hold complex authorization logic 2. Easily add authorization and scan for it later
81. Special Services 10
82. Certain classes are auto-registered into the service container by convention KnpRadBundle
83. What? Dir Doctrine Repo n/a Twig Extension Twig/ Form Type Form/ Form Type Extension Form/Extension/ Validation Constraint Validator/Constraints/ Security Voter Security/ Auto-Service Registration
84. Using the auto-registered repository service
85. Auto-Service Registration 1. Implement ContainerAwareInterface to be passed the container 2. Offload logic to another service to avoid bad practice of using the injected container
86. Part 3: ! Iterating Quickly
87. Lets learn from our experiments quickly and adjust
88. 1 Error Notification 1. Be ok with errors, but *know* about them 2. Get emailed on errors (or something equivalent)* 3. Use NewRelic * http://symfony.com/doc/current/cookbook/logging/monolog_email.html
89. 2 Preventing or Fixing Errors 1. Code safely, but not too safely 2. Respond to a bug with effort that is proportional to the pain it caused you 3. … so don’t freak out about every complaint
90. 3 Behat Behat converts human-readable 
 descriptions of a feature into a 
 functional test
91. Behat team.feature file
93. 3 Behat 1. You already need to think about the behavior of a feature 2. Fast to write, especially “smoke screen” testing 3. Confidence that no core *behavior* is broken on each depot
94. 4 CI / Travis 1. Develop quickly without worrying about tests 2. Always know if your app is in a deployable state
95. 5 PHPStorm 1. Community-developed “Symfony” plugin 2. Autocompletion for service names, route names, template names, Twig functions, methods on services 3. Click directly into templates, classes behind a service
96. It’s basically ridiculous
97. 1. RADBundle developer 2. Professional nice guy 3. Helped with this presentation 6 Tips from Florian @docteur_klein
98. 6 Abstraction @docteur_klein Florian says: Don’t over engineer with abstraction layers (YAGNI)
99. Maybe you need Silex not Symfony
100. 6 Small Classes @docteur_klein Florian says: Create many small classes (single responsibility principle)
101. 1. Library given you trouble? Based on the quality factor, consider abandoning it 2. KnpRADBundle has *many* features, not all are documented or are even a great idea. Use what works, move on quickly. 7 Abandon problems
102. Final Act ! Break (some) things
103. 1. Define your success metric A. How much uncertainty? B. Mission critical features C. Did we find any money? RAD
104. 2. Choose your RAD Features • KnpRadBundle • SensioFrameworkExtraBundle • MopaBootstrapBundle • Alice+Faker • SonataAdminBundle • APYDataGridBundle • … RAD
105. 3. Iterate Quickly and with Confidence • Error notification • Behat • CI / Travis • PHPStorm + Symfony Plugin • Avoid over-abstraction • Abandon failing solutions (quickly, but not too quickly) RAD
106. Learn Faster
107. Make a more *successful* project
108. https://joind.in/10509 PHP Tutorial Screencasts Ryan Weaver @weaverryan
109. @weaveryan @KnpUniversity https://joind.in/10509 https://github.com/knpuniversity/sunshinephp-rad