RailsConf 2009 - Rails 3: Stepping off of the golden path

Back in December 2008, the Rails and Merb core teams surprised everybody by deciding to merge their teams and focus their energy on a common release: Rails 3.0. On one hand, Rails is famous for being an opinionated Rapid Application Development framework following the well known “convention over configuration” design paradigm. On the other hand, Merb is known for its performance, extreme modularity and greenfield experimentations. The new unified team is working on having the best of both worlds, but the real questions are:

How does that affect me as a Ruby/Rails/Merb developer? When should I step off of the golden path and why?

Matt Aimonetti, Merb core and Rails team member will take you through the new world of possibilities now available to Rails 3.0 developers. You will see the pros and cons of different options for people desiring to step off the “golden path”. Matt will show concrete examples of application/cases where alternative solutions could be more appropriate and others where you are better off staying on the golden path.

More info: http://matt.aimonetti.net/posts/2009/05/08/railsconf-2009/

Transcript

1. Rails3 step off of the golden path RailsConf2009 - matt aimonetti Wednesday, May 6, 2009
2. WHO AM I? m a t t a i m o n e t t i Wednesday, May 6, 2009
3. WHO AM I? m a t t a i m o n e t t i “morally loose, cheese eating surrender monkey” Wednesday, May 6, 2009
4. WHO AM I? m a t t a i m o n e t t i “morally loose, cheese eating surrender monkey” Ted Han Wednesday, May 6, 2009
5. WHO AM I? m a t t a i m o n e t t i “morally loose, cheese eating surrender monkey” Ted Han Ruby Addict Wednesday, May 6, 2009
6. WHO AM I? m a t t a i m o n e t t i “morally loose, cheese eating surrender monkey” Ted Han Merb Ruby Addict Wednesday, May 6, 2009
7. WHO AM I? m a t t a i m o n e t t i “morally loose, cheese eating surrender monkey” Ted Han Merb Rails Ruby Addict Wednesday, May 6, 2009
8. WHO AM I? m a t t a i m o n e t t i “morally loose, cheese eating surrender monkey” Ted Han Merb Rails MacRuby Ruby Addict Wednesday, May 6, 2009
9. Rails3 step off of the golden path RailsConf2009 - matt aimonetti Wednesday, May 6, 2009
10. MERGE Wednesday, May 6, 2009
11. Wednesday, May 6, 2009
12. Wednesday, May 6, 2009
13. Wednesday, May 6, 2009
14. RUBY oscon 2003 Wednesday, May 6, 2009
15. RUBY Wednesday, May 6, 2009
16. RUBY Wednesday, May 6, 2009
17. RUBY Wednesday, May 6, 2009
18. Wednesday, May 6, 2009
19. Wednesday, May 6, 2009
20. RUBY ON RAILS Convention over Configuration Don't repeat yourself Wednesday, May 6, 2009
21. LARGE ADOPTION Wednesday, May 6, 2009
22. SCHISM Wednesday, May 6, 2009
23. Performance Agnosticism Wednesday, May 6, 2009
24. Adobe Wikimedia sproutcore/Apple AT&T/yellowpages.com powerset/microsoft ... Wednesday, May 6, 2009
25. SPLIT RUBY COMMUNITY ... Wednesday, May 6, 2009
26. DRAMA ... Wednesday, May 6, 2009
27. SAT DOWN & TALKED ... Wednesday, May 6, 2009
28. DIFFERENT PERSPECTIVES Wednesday, May 6, 2009
29. SAME GOAL Wednesday, May 6, 2009
30. MERGE Wednesday, May 6, 2009
31. Wednesday, May 6, 2009
32. Wednesday, May 6, 2009
33. WHAT DO YOU GET? Wednesday, May 6, 2009
34. Wednesday, May 6, 2009
35. vaporware Wednesday, May 6, 2009
36. WHAT ARE YOU GOING TO GET improved performance Wednesday, May 6, 2009
37. WHAT ARE YOU GOING TO GET increased modularity Wednesday, May 6, 2009
38. WHAT ARE YOU GOING TO GET agnosticism Wednesday, May 6, 2009
39. WHAT ARE YOU GOING TO GET public API Wednesday, May 6, 2009
40. WHAT ARE YOU GOING TO GET mountable apps Wednesday, May 6, 2009
41. WHAT DOES IT REALLY MEAN? Rails 2 Wednesday, May 6, 2009
42. WHAT DOES IT REALLY MEAN? Rails 3 Wednesday, May 6, 2009
43. CECI N’EST PAS LA RÉALITÉ Rails 2 assert_equal(true, AwesomeApp.success?) html, xml, json, js Wednesday, May 6, 2009
44. CECI N’EST PAS LA RÉALITÉ Rails 2 assert_equal(true, AwesomeApp.success?) html, xml, json, js ERB Wednesday, May 6, 2009
45. CECI N’EST PAS LA RÉALITÉ Rails 2 assert_equal(true, AwesomeApp.success?) html, xml, json, js ERB Wednesday, May 6, 2009
46. CECI N’EST PAS LA RÉALITÉ Rails 2 assert_equal(true, AwesomeApp.success?) html, xml, json, js ActiveRecord ERB Wednesday, May 6, 2009
47. CECI N’EST PAS LA RÉALITÉ Rails 2 assert_equal(true, AwesomeApp.success?) html, xml, json, js ActiveRecord Test::Unit ERB Wednesday, May 6, 2009
48. RAILS 3 DEFAULT STACK • ORM: ActiveRecord • JS: Prototype • Templating: ERB • Testing: Test::Unit Wednesday, May 6, 2009
49. RAILS 3 - DEFAULT STACK assert_equal(true, AwesomeApp.success?) html, xml, json, js Wednesday, May 6, 2009
50. RAILS 3 - DEFAULT STACK assert_equal(true, AwesomeApp.success?) html, xml, json, js ERB Wednesday, May 6, 2009
51. RAILS 3 - DEFAULT STACK assert_equal(true, AwesomeApp.success?) html, xml, json, js ERB Wednesday, May 6, 2009
52. RAILS 3 - DEFAULT STACK assert_equal(true, AwesomeApp.success?) html, xml, json, js ActiveRecord ERB Wednesday, May 6, 2009
53. RAILS 3 - DEFAULT STACK assert_equal(true, AwesomeApp.success?) html, xml, json, js ActiveRecord Test::Unit ERB Wednesday, May 6, 2009
54. WHAAAT? Wednesday, May 6, 2009
55. NO DRASTIC CHANGES FOR THE END USERS Wednesday, May 6, 2009
56. RAILS WAY Wednesday, May 6, 2009
57. RAILS WAYS Wednesday, May 6, 2009
58. Wednesday, May 6, 2009
59. Wednesday, May 6, 2009
60. Wednesday, May 6, 2009
61. GAIN FLEXIBILTY Wednesday, May 6, 2009
62. LESS OPINIONATED Wednesday, May 6, 2009
63. WE ARE NOT ALL THE SAME Wednesday, May 6, 2009
64. Wednesday, May 6, 2009
65. ¿WHEN? Wednesday, May 6, 2009
66. Use default stack? Rails 3 default stack Is there a reason not to use it? Y is it a question of taste? Use the default stack and stop overthinking things N Y is it worth it? Rails 3 custom stack evaluate your requirements: templating, JS, ORM, Performance N N Y is it worth it? Y N Wednesday, May 6, 2009
67. OPTIONS Wednesday, May 6, 2009
68. JAVASCRIPT FRAMEWORKS Wednesday, May 6, 2009
69. TEMPLATING ENGINES Wednesday, May 6, 2009
70. OBJECT RELATION MAPPER Wednesday, May 6, 2009
71. Databases Object Oriented Languages scalar values objects data ORM Wednesday, May 6, 2009
72. RAW SQL SELECT * FROM Book WHERE price > 100.00 ORDER BY title; Wednesday, May 6, 2009
73. ACTIVERECORD Book.all \ :conditions => ["price > ?", 100.00], :order => 'title' Wednesday, May 6, 2009
74. DATAMAPPER Book.all \ :price.gt => 100.00, :order => [:title.asc] Wednesday, May 6, 2009
75. SEQUEL Book.find{|b| b.price > 100.00}.order(:title) Wednesday, May 6, 2009
76. COUCHREST Book.by_price(:startkey => 100.01) Wednesday, May 6, 2009
77. MANY MORE ORMS/DSLS Wednesday, May 6, 2009
78. RUBY IS AWESOME Wednesday, May 6, 2009
79. DATAMAPPER Wednesday, May 6, 2009
80. DATAMAPPER @parent = Parent.find_by_name("Matt") @parent.children.each do |child| @parent.object_id.should == child.parent.object_id end Wednesday, May 6, 2009
81. DATAMAPPER @parent = Parent.find_by_name("Matt") @parent.children.each do |child| @parent.object_id.should == child.parent.object_id end Fails with ActiceRecord Wednesday, May 6, 2009
82. DATAMAPPER @parent = Parent.find_by_name("Matt") @parent.children.each do |child| @parent.object_id.should == child.parent.object_id end Fails with ActiceRecord Passes with DataMapper Wednesday, May 6, 2009
83. DATAMAPPER does what ActiveRecord does... but differently Wednesday, May 6, 2009
84. DATAMAPPER db drivers using 1 unified interface Copyright - Merb in Action - Manning Wednesday, May 6, 2009
85. DATAMAPPER • procrastination as a value • Lazy Loading • Strategic Eager Loader Wednesday, May 6, 2009
86. DATAMAPPER students = Student.all students.each do |student| student.books.map{|b| b.name} end Wednesday, May 6, 2009
87. ACTIVERECORD SELECT * FROM "students" SELECT * FROM "books" WHERE ("books".student_id = 1) SELECT * FROM "books" WHERE ("books".student_id = 2) SELECT * FROM "books" WHERE ("books".student_id = 3) SELECT * FROM "books" WHERE ("books".student_id = X) students = Student.all students.each do |student| student.books.map{|b| b.name} end Wednesday, May 6, 2009
88. DATAMAPPER students = Student.all students.each do |student| student.books.map{|b| b.name} end SELECT "id", "name" FROM "students" ORDER BY "id" SELECT "id", "name", "student_id" FROM "books" WHERE ("student_id" IN (1, 2, 3, X)) ORDER BY "id" Wednesday, May 6, 2009
89. MULTIPLE REPOS production: adapter: mysql encoding: utf8 database: production-app username: root password: top-s3ckrit host: localhost repositories: nightly_backup: adapter: sqlite3 database: shared/nightly.db weekly_backup: adapter: sqlite3 database: shared/weekly.db Wednesday, May 6, 2009
90. MULTIPLE REPOS Article.copy(:default, :nightly_backup, :created.gt => 1.day.ago ) Wednesday, May 6, 2009
91. MULTIPLE REPOS class Page include DataMapper::Resource property :id, Serial property :name, String repository(:legacy) do property :name, String, :field => "title" end end Wednesday, May 6, 2009
92. QUERY::PATH Person.all("addresses.street.like" => "%street%" ) SELECT "people"."id", "people"."name" FROM "people" INNER JOIN "addresses" ON ("people"."id" = "addresses"."person_id") WHERE ("addresses"."street" LIKE '%street%') ORDER BY "people"."id" Find all people with an address that has street in the street name Wednesday, May 6, 2009
93. ADAPTERS RDBMS file system IMAP Sales Force YAML REST APIs custom APIs ... Wednesday, May 6, 2009
94. SEQUEL • Prepared Statements • Sharding • highly customizable SQL work • high performance Wednesday, May 6, 2009
95. HIBERNATE • ActionORM • JRuby Wednesday, May 6, 2009
96. NON RDBMS SYSTEMS • AppEngine::Datastore • CouchDB with CouchRest or other DSL • Redis, Tokyo Cabinet etc... Wednesday, May 6, 2009
97. RAILS EXTREME only for a few of you Wednesday, May 6, 2009
98. CUSTOMIZE RAILS TO THE EXTREME Wednesday, May 6, 2009
99. CREATE YOUR OWN RAILS • define your own file structure • define your own router DSL • define your own ways to deal with requests Wednesday, May 6, 2009
100. EXTEND ACTIONCONTROLER class Presentation < ActionController::Http def index self.response_body = "Rails3 + MacRuby" end end Presentation.action(:index).call \ Rack::MockRequest.env_for("/railsconf10") Wednesday, May 6, 2009
101. EXTEND ACTIONCONTROLER def action(&blk) Class.new(ActionController::Http) do include ActionController::Renderer define_method(:xtreme, &blk) end.action(:xtreme) end run action do render "some_template" end Wednesday, May 6, 2009
102. ¿FUTURE? Wednesday, May 6, 2009
103. + + C o u c h D B Wednesday, May 6, 2009
104. credits: http://www.flickr.com/photos/dotdoubledot/ Katsushika Hokusai Delacroix Benetton http://www.rubyist.net/~matz/slides/oscon2003 Matt Groening http://www.flickr.com/photos/derricksphotos/ http://www.flickr.com/photos/bogdansuditu http://www.flickr.com/photos/77096872@N00/2547160291/ http://www.flickr.com/photos/edvvc/1972546648/ http://www.flickr.com/photos/amagill/34762677/ http://www.flickr.com/photos/celinesphotographer/360918623/ Wednesday, May 6, 2009
105. Thanks Heidi Vega Rails team Yehuda Katz Carl Lerche Laurent Sansonetti Rich Kilmer Ninh Hernandez Bui Hongli not-so-MacLovin’ Lai Dan Kubb Wednesday, May 6, 2009