Rick Martinez's presentation on some useless, but inspiring, ways to extend Rails 3.

1. Hardcore!
Tuesday, June 15, 2010

2. - Dave Thomas
Tuesday, June 15, 2010

3. core
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4. Duck Typing
"when I see a bird that walks like a duck and swims like a
duck and quacks like a duck, I call that bird a duck."
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5. Rails 2
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6. I started exploring
alternatives to Rails
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7. !
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8. HISS!!!
jason seifer
YouTube search: rails vs. django
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9. December 23rd, 2008
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10. Tuesday, June 15, 2010

11. + =
RAILS 3
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12. What makes
Rails 3 amazing?
(and why did it take so long?)
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13. “THE GREAT
DECOUPLING”
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14. Tuesday, June 15, 2010

15. Core components
are easily customizable.
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16. Core components
are easily replaceable.
OO
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17. LET’S EXPLORE
SOME RAILS CORE
FOR THE SAKE OF KNOWING!
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18. THE RAILS STACK
Network
Rack
Railties
ActionDispatch
ActionController
ActionView ActiveModel
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19. LET’S DO
USELESS THINGS
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20. Take this code with
a grain of salt
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21. Let’s write a useless
DSL for our views.
WRITING A TEMPLATE HANDLER
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22. WRITING A TEMPLATE HANDLER
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23. WRITING A TEMPLATE HANDLER
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24. WHAT ACTION VIEW EXPECTS
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25. Tuesday, June 15, 2010

26. Tuesday, June 15, 2010

27. Tuesday, June 15, 2010

28. MAKING THE DSL
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29. my_cool_dsl.rb
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30. my_cool_handler.rb
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31. views/hello/index.cool
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32. http://localhost:3000/hello
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33. Let’s accept useless
connections.
WRITING A “TELNET SERVER”
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34. A simple way.
ACT LIKE A RACK SERVER
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35. TALK LIKE A RACK SERVER
telnet_server.rb
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36. my_cool_handler.rb
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37. z
my_cool_dsl.rb
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38. Tuesday, June 15, 2010

39. CONSISTENCY!
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40. hello_controller.rb views/hello/index.cool
via telnet via browser
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41. DRY!
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42. Let’s make this
uselessness
configurable.
WORKING WITH RAILTIES
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43. WHAT IS A RAILTIE?
The interface between the
Rails framework and its components
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44. WHAT CAN YOUR RAILTIE DO?
• Allow you to accept configuration from application.rb
• Set up initializers in your extension’s context
• Tell Rails about generators and rake tasks
• Build engines, plugins, and applications
Engines, plugins, and applications
are all subclasses of Railtie in
Rails 3
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45. Organized!
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46. railtie.rb
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47. lib/super_cool/view_dsl.rb
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48. config/application.rb
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49. Results!
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50. Let’s let others be just
as useless.
MAKING THIS A
DISTRIBUTABLE FRAMEWORK
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51. ANATOMY OF OUR GEM
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52. ANATOMY OF OUR GEM
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53. package it with the usual tools...
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54. Tuesday, June 15, 2010

55. IRC bot framework
Modular enterprise app
FOOD FOR THOUGHT
MUD game framework
Modular view system
A pluggable admin panel
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56. RESOURCES
http://github.com/rails/rails
bundle open rails
bundle open actionpack
bundle open ... etc ...
http://railsapi.com/
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57. RAILS CODE IS GOOD CODE
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58. RAILS CODE IS REUSABLE CODE
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59. And the more use cases you find
for customizing Rails 3 internals,
the better they will be written
in the future
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60. Be inspired to look where
you might’ve not looked before
and learn!
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61. Thanks!
twitter @digx
+
rick.martinez@gmail.com
Tuesday, June 15, 2010