These are the slides from my presentation on Rails 2.0 at the Silicon Valley Ruby on Rails Meetup on Dec 13.

1. Rails 2.0
“evolution, not revolution”

2. Rails 2.0 Overview
RESTful web architectures
some small feature maturations
removal of features determined to be not essential

3. Action Pack
ActionController + ActionView

4. Multiview
“Machine-Gunning .rhtml and .rxml”
(action.mimetype.renderer)
show.html.erb
index.atom.builder
edit.iphone.haml

5. Partial Layouts

6. Partial Layouts

7. Routing Resources

8. Routing Namespaces
link_to ‘variants’,
admin_product_variants_url(@product)
/admin/products/:product_id/variants

9. Record Identification
redirect_to(person)
link_to(person.name, person)
form_for(person)

10. HTTP Authentication

11. authenticate_or_request_with_http_basic

12. Exception Handling

13. controllers/application.rb
rescue_from

14. Atom Feed Helper

15. Stolen from the DHH announcement

16. Mime::Type Predicates
controller.request.format.html?
controller.request.format.xml?

17. Performance
Asset Servers
Asset Caching
Cookie Based Sessions

18. most browsers will only make up
to two simultaneous connections
to any one domain
Asset Servers

19. config/environment.rb
Asset Servers

20. config/environment.rb
Asset Servers
will always use the same server for a single file

21. Asset Caching

22. Cookie Based Sessions

23. example stolen from ryan daigle
Cookie Sessions Security

24. Security
CSRF Protection
TextHelper#sanitize
HTTP only cookies

25. CSRF Protection

26. Active Resource
Short Overview of Resources

27. A consumer of RESTful resources
Active Resource

28. A consumer of RESTful resources
As ActiveRecord is a consumer of
relational database resources
Active Resource

29. ActiveResource Models

30. Active Resource Actions
Http REST request
Model request Request URI Response
operation body
find(id) GET n/a /people/id.xml <XML>
Status:
save (update) PUT <XML> /people/id.xml
200 OK
Location:
save (create) POST <XML> /people http://x/people/id.xml
Status:
destroy DELETE n/a /people/id.xml
200 OK
list GET n/a /people <XML>
credit: ryan diagle

31. demo

32. Active Record

33. Validations

34. :allow_blank
validates_numericality

35. :allow_blank
validates_numericality

36. Sexy Migrations

37. “Cold Shower” Migrations

38. Err Sexy Migrations

39. Rails 2.0 Sexy
4 fewer lines + rails programmers == sexy

40. References

41. Query Cache

42. Query Cache Logging

43. Disabling the Query
Cache

44. Fixtures
Foxy Fixtures
Collection Fixtures
Fixture Performance

45. conferences.yml
places.yml
Foxy Fixtures

46. conferences.yml
places.yml
Foxy Fixtures

47. Was
Now
Collection Fixtures

48. Data Exchange
to_xml, from_xml
to_json, from_json

49. /conferences/show/1.js
to_json

50. to_xml

51. Other Stuff

53. rake

54. rake notes

55. rake notes

56. rake notes

57. rake db
rake db:create
rake db:create:all
rake db:drop
rake db:drop:all
rake db:reset
rake db:rollback
rake db:version

58. rake routes

61. rake routes
route name, HTTP method, route path, route requirements

66. helper :all

67. rails my_new_app

68. Request Profiler
RubyProf Wrapper
./script/performance/request -n 10 login_session.rb

69. /config/initializers/

70. initializers directory

71. initializers directory

72. initializers directory

73. config/preinitializer.rb
loaded before the environment files

74. Scaffolding
./script/generate scaffold conference
name:string description:text start_date:date end_date:date

75. Resourceful Scaffolding

76. Breakpoints

77. gem install ruby-debug

78. add ‘debugger’ to code

79. ./script/server -u

80. demo

81. www.datanoise.com/ruby-debug

82. Upgrading to 2.0

83. Deprecations

84. with_scope

85. Components

86. Pagination

87. Object Transactions

88. http://code.bitsweat.net/svn/object_transactions/

89. ActionWebService
ActiveResource

90. syntax changes
@params params[]
@session session[]
@flash flash[]
@request request[]
@env env[]
find_all find(:all)
find_first find(:first)
render_partial render :partial
:post => true :method => :post

91. start_form_tag
end_form_tag
form_for do
end

92. start_form_tag
end_form_tag
form_tag
</form>

93. Extracting to Plugins
and Gems
acts_as
some js helpers
commercial database adapters

94. ./script/plugin install
acts_as_list
acts_as_nested_set
acts_as_tree
auto_complete
in_place_editing

95. gem install
activerecord-X-adapter
--source http://gems.rubyonrails.com
firebird
frontbase
informix
openbase
oracle
sqlserver
sybase

96. Upgrade Process
gem install rails -y

97. Resources
• Peepcode Rails2 PDF - Ryan Daigle ($9)
• http://weblog.rubyonrails.org
• /2007/12/7/rails-2-0-it-s-done
• http://ryandaigle.com
• /articles/2007/12/7/rails-2-0-final-released-summary-of-features
• http://www.slashdotdash.net
• /articles/2007/12/03/rails-2-upgrade-notes

98. Thanks!
noesbueno.org/rails2

99. Work with me @
http://www.reactrix.com/careers.php
schacon@gmail.com
Sr. Web Developer
Linux Systems Administrator
Sr. Game/Interaction Programmer
Computer Vision Engineer