Master the New Core of Drupal 8 Now: with Symfony and Silex
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I'm not a Drupal developer, but I do already know *a lot* about Drupal 8, like how the event system works, what a service is, how it relates to a dependency injection container and how the deepest and darkest of Drupal’s request-response workflow looks. How? Because I use Symfony. And if you want to get a jumpstart on Drupal 8, you should to. In this talk, we'll double the number of tools you have to solve problems (Drupal + Symfony) and start to unlock all the new important concepts. We'll start with Silex (a microframework based on Symfony), graduate to Symfony, and focus on the pieces that are most interesting to a Drupal 8 developer.
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Master the New Core of Drupal 8 Now: with Symfony and Silex
- 1. PHP Tutorial Screencasts MASTER THE NEW CORE OF DRUPAL 8 NOW: WITH SYMFONY AND SILEX
- 2. ! ! ! ! ! ! • Husband of the much more talented @leannapelham PHP Tutorial Screencasts knplabs.com github.com/weaverryan • Lead contributor to the Symfony documentation ! • KnpLabs US - Symfony consulting, training, Kumbaya ! • Writer for KnpUniversity.com awesome amazing screencasts!!*! Hallo!
- 3. Act 1 ! The anatomy of any web framework
- 4. @weaverryan
- 5. @weaverryan An entire application that says hallo!
- 7. Or use the built-in PHP web server o/ php -S localhost:8000 @weaverryan
- 8. * The built-in PHP web server can be used with Drupal too!
- 9. Request -> Response Framework Response: Hello Texas!@weaverryan Routing: Determine a function that can create this page (the controller) Request: GET /hello/Texas! The Controller: Our code: constructs the page
- 10. The route is matched when the URI is /hello/*@weaverryan
- 11. If the URI matches the route, Silex executes this function (the controller) @weaverryan
- 12. The value of {name} is passed as an argument to the controller @weaverryan
- 13. We construct the page and celebrate! @weaverryan
- 14. Request -> Response Framework The Controller: Our code: constructs the page Response: Hello Texas!@weaverryan Routing: Determine a function that can create this page (the controller) Request: GET /hello/Texas!
- 16. Our Mission: (should we choose to accept it) ! ! Understand the “request” and create a “response” @weaverryan
- 17. The Request @weaverryan GET /hello/Texas?page=5 HTTP/1.1! Host: localhost:8000! Connection: keep-alive! Cache-Control: max-age=0! Accept: text/html,application/xhtml+xml! User-Agent: Mozilla/5.0! Cookie: PHPSESSID=abcdefg; has_js=1; The client sends us a simple message that describes what they want
- 18. The Request @weaverryan GET /hello/Texas?page=5 HTTP/1.1! Host: localhost:8000! Connection: keep-alive! Cache-Control: max-age=0! Accept: text/html,application/xhtml+xml! User-Agent: Mozilla/5.0! Cookie: PHPSESSID=abcdefg; has_js=1; The HTTP method The URI The client sends us a simple message that describes what they want
- 19. The Request @weaverryan The Request headers GET /hello/Texas?page=5 HTTP/1.1! Host: localhost:8000! Connection: keep-alive! Cache-Control: max-age=0! Accept: text/html,application/xhtml+xml! User-Agent: Mozilla/5.0! Cookie: PHPSESSID=abcdefg; has_js=1; The client sends us a simple message that describes what they want
- 20. The Response @weaverryan HTTP/1.1 200 OK! Host: localhost:8000! Cache-Control: no-cache! Date: Wed, 23 Apr 2014 16:25:03 GMT! Content-Type: text/html;! ! Hello Texas
- 21. HTTP/1.1 200 OK! Host: localhost:8000! Cache-Control: no-cache! Date: Wed, 23 Apr 2014 16:25:03 GMT! Content-Type: text/html;! ! Hello Texas The Response @weaverryan Response status code The Response headers The body
- 22. In PHP, the “request” message *explodes* into the “superglobals” @weaverryan
- 23. To create the response, we use “header” and echo content @weaverryan
- 24. @weaverryan The Request in Silex
- 25. @weaverryan The Response in Silex
- 26. Act 3 ! Namespaces & Autoloading https://www.flickr.com/photos/chrisjeriko/8599248142
- 27. The controller can be any ol’ function
- 28. Controller as a method in a class @weaverryan
- 29. Controller as a method in a class @weaverryan
- 30. PHP Namespaces @weaverryan Namespaces give us longer class names: DrupalacmeControllerDemoController
- 32. Autoloading @weaverryan You don’t need to use require/include if: ! A. The namespace is the same as the directory ! B. The class has the same name as the folder (+.php) It’s called PSR-0
- 33. Act 4: ! Services and the “container”
- 34. Services == Useful Objects @weaverryan
- 35. The container == the object that contains all the services @weaverryan
- 36. In Silex, Symfony and Drupal 8, there is a “container”. ! If you have it, you can use any service (useful object)
- 37. Can we use the Twig service to render a template?
- 38. @weaverryan The “container” in SilexThe service “twig”
- 39. Request -> Response Framework The Controller: Our code: constructs the page Response: Hello Texas!@weaverryan Container (with services) Routing: Determine a function that can create this page (the controller) Request: GET /hello/Texas!
- 41. Just like Drupal “hooks”, Silex has events @weaverryan
- 42. “Hi! When event XXXXX happens, execute this function. kthxbai” @weaverryan You can tell Silex:
- 43. Request -> Response Framework The Controller: Our code: constructs the page @weaverryan Container (with services) Event: kernel.controller Events: kernel.view kernel.response Response: Hello Texas! Routing: Determine a function that can create this page (the controller) Request: GET /hello/Texas! Event: kernel.request
- 44. @weaverryan
- 45. @weaverryan
- 47. Silex (because of Symfony) has a “profiler” @weaverryan
- 48. @weaverryan
- 49. It has a lot of information, including the “timeline” @weaverryan https://www.flickr.com/photos/42andpointless/8062417131
- 50. @weaverryan
- 51. 1) kernel.request event 2) Routing 3) Executes the controller 4) Our “listener” in kernel.view
- 52. Act 7: ! Everything is the same in Drupal 8
- 53. How can we create this in Drupal 8?
- 54. Thank you to my amigo Jesus Olivas for writing awesome blog posts @jmolivas jmolivas.com
- 56. 1) Create module “acme” @jmolivas http://bit.ly/d8-hello
- 57. 2) Create routing @jmolivas http://bit.ly/d8-hello Name of the controller acme.routing.yml
- 58. 3) Create the controller @jmolivas http://bit.ly/d8-hello
- 59. Module, Routing, Controller @jmolivas http://bit.ly/d8-hello These extra directories are going away soon o/
- 60. @weaverryan
- 61. And there’s even a code generator already for all of this (and more)
- 63. Does Drupal 8 have a service container?
- 65. Where you find the container could change before Drupal 8 is finished @weaverryan
- 66. @weaverryan Yes there is a container ! And yes, it has all of the useful objects (services) of Drupal
- 67. Are there events like in Silex?
- 68. @weaverryan Yes! The same events exist and more!
- 69. 1) Create a “listener” class
- 71. This is executed at the end of the request ! We add JavaScript to each page on the site
- 72. 2) Add a new service to the container
- 73. @weaverryan Now, the container has a service called “acme.view_subscriber” The event_subscriber tag says to Drupal that this service wants to be a “listener” for some events
- 74. @weaverryan
- 75. And does the profiler exist?
- 82. Act 8 ! ! , &
- 83. Principal Themes • Request/Response ! • Routing/Controller ! • PHP Namespaces/Autoloading ! • Services/Container • Events/Listeners • Profiler @weaverryan All are the same in Silex, Drupal & Symfony
- 84. You can use Silex to learn Drupal!
- 85. You can use Silex to learn Symfony!
- 86. You can use Symfony to learn Drupal!
- 87. https://www.flickr.com/photos/zzpza/3269784239 Finally, We have more tools to solve problems
- 88. PHP Tutorial Screencasts Ryan Weaver @weaverryan Thank you!