1. Hello #VANRUBY!

2. Godfrey Chan
  @chancancode

5. PUBLIC SERVICE
ANNOUNCEMENT

6. RAILS 3.2.16 + 4.0.2
http://groups.google.com/group/rubyonrails-security

7. What’s NEW IN
Rails 4.1 *
* As OF 752f9fed00221ad97073e13b12be9c849199b4b8

8. VARIANTS

9. Variants

10. Variants
class ApplicationController < ActionController::Base
before_action :detect_variant
private
def detect_variant
request.variant =
case request.user_agent
when /iPhone/ then :phone
when /iPad/
then :tablet
end
end
end
respond_to do |format|
format.html do |html|
html.phone
# index.html+phone.erb
html.tablet do # index.html+tablet.erb
# ...
render
end
end
end

11. Variants
OTHER USES...
A/B TESTING?
API VERSIONING?
OLD BROWSERS?
NO JS FALLBACK?

12. ENUMS

13. ENUMS
class Conversation < ActiveRecord::Base
enum status: [ :active, :archived ]
end
conversation.archive!
conversation.active? # => false
conversation.status # => "archived"
Conversation.archived # => Relation for all archived Conversations

14. MESSAGE VERIFIER

15. MESSAGE VERIFIER
message = Rails.application
.message_verifier('salt')
.generate('my sensible data')
Rails.application
.message_verifier('salt')
.verify(message) # => 'my sensible data'

16. MESSAGE VERIFIER
USES...
PASSWORD RESET?
INVITE TOKEN?
OTHER LINKS IN EMAILS?

17. TIME TRAVEL

18. TIME TRAVEL

19. TIME TRAVEL
test "Fast forward to Christmas" do
refute is_it_christmas_yet?
travel_to Time.new(2013, 12, 25, 00, 00, 00)
assert is_it_christmas_yet?
end
test "How I met your mother" do
@mother = User.find(...)
travel -30.years do
assert @mother.single?
end
refute @mother.single?
end

20. SPRING

21. Rails application preloader

22. Totally AutomatICGIc

23. spring
$ time ./bin/rails runner 'puts "Hello"'
Hello
0.05s user 0.02s system 1% cpu 3.860 total
$ time ./bin/rails runner 'puts "Hello"'
Hello
0.05s user 0.01s system 27% cpu 0.229 total
$ time ./bin/rake spec
.............................................................................................
Finished in 15.04 seconds
322 examples, 0 failures
0.06s user 0.02s system 0% cpu 25.446 total
$ time ./bin/rake spec
.............................................................................................
Finished in 14.79 seconds
322 examples, 0 failures
0.05s user 0.01s system 0% cpu 20.543 total

24. spring

25. NO TOUCHING

26. NO TOUCHING
ActiveRecord::Base.no_touching do
Post.first.touch # does nothing
end
Comment.no_touching do
Comment.first.touch # does nothing
Post.first.touch # updates, but won't update related comments if there are any
end

27. TO_PARAM

28. _
TO_PARAM
class User < ActiveRecord::Base
to_param :name
end
user = User.find_by(name: 'Fancy Pants')
user.id
# => 123
user.to_param # => "123-fancy-pants"

29. String#Remove

30. String#Remove
>> ' a lot of
whitespace
=> "alotofwhitespace"
'.remove(/[:space:]/)
>> 'username=godfrey&password=123456'.remove(/&?password=[^&]*/)
=> "username=godfrey"

31. JSON

32. r.i.p. multijson

33. all-New JSON encoder

34. Action view

35. SURPRISES?

36. TRY IT TODAY
https://gist.github.com/chancancode/7781341

37. TRY IT TODAY
# Gemfile
gem 'rails', github: 'rails/rails'
gem 'arel', github: 'rails/arel'

38. #VANRUBY + OSS
= <3 <3 <3 <3

39. Hack night TUE dec 17

40. IRC #VANRUBY (freenode)

41. Godfrey Chan
  @chancancode