This document contains notes from a presentation given by Tatsuhiro Ujihisa on internationalization in Ruby on Rails. It discusses the need to support multiple languages in applications, introduces the Ruby-GetText-Package gem for localization, and provides steps for its implementation including editing configuration files, controllers, Rakefiles and PO files. It also lists some Japanese software and events that may be of interest.

1. i35s
internationalization in ruby on rails
2007-08-11
Tatsuhiro Ujihisa
Ruby/Rails Kansai Workshop #18

2. Tatsuhiro Ujihisa
•
Osaka Univ. graduate student
• love Haskell, Ruby, and
other functional languages...
• love Mac, vim, KeyNote,
and cats

3. Tatsuhiro Ujihisa
• blog: rubyneko
Osaka Univ. graduate student
His
• love Haskell, Ruby, and
http://ujihisa.nowa.jp/
other functional languages...
• love Mac, vim, KeyNote,
and cats

4. Tatsuhiro Ujihisa
• blog: rubyneko
Osaka Univ. graduate student
His
• love Haskell, Ruby, and
http://ujihisa.nowa.jp/
other functional languages...
• love Mac, vim, KeyNote,
exponent of the word: MDD
and cats
(Mascot Driven Development)

6. s
35
i

8. zation
ionali
ternat
In
n Rails
uby o
in R
including s+

9. •
at Osaka International
University
•
at Ruby/Rails Kansai
Workshop#18

10. •
at Osaka International
University
•
at Ruby/Rails Kansai
Workshop#18
i18n

11. uda.la

12. i35s do

13. Backgrounds...

14. prevalent languages
1 Chinese 1.3 billion
2 Arabic 420 million
3 Hindi 366 million
4 English 341 million
... ... ...
Japanese
9 125 million
source: wikipedia

15. • Most Japanese start learning
English at Junior High School
➡88% Japanese <- [En, Jp]
➡EnglishPeople.count #=> 451

16. • 451 / 125.0 #=> 3.608
• if Japanese -> English
then YourWebService.profit
#=> 3.6 times upper
end

18. Your worktime

19. Your worktime
8h

20. Your worktime
2.2h
8h

21. Your worktime
2.2h
8h

22. Set your default language,
English!

23. That's all.
Thank you!

28. • Your app must support
both English and Chinese
• One app, has_many langs
‣Hindi, etc...
eg. English, Chinese, Arabian,

29. Ruby-GetText-Package

30. Ruby-GetText-Package
• phrase/keyword replacement
• author: Masao Mutoh
• install:
sudo gem install gettext
• current ver. 1.10.0

31. Ruby-GetText-Package
• phrase/keyword replacement
• author: Masao Mutoh
• install: now!
sudo gem install gettext
• current ver. 1.10.0

32. • the basis of using
Ruby-Ge Te on Rails
t xt-Package
• applied usage ->
http://www.yotabanana.com/hiki/
ja/ruby-gettext-howto-ror.html
sudo gem install gettext

33. README
Ruby-GetText-Package is a
Localization(L10n) library
and tools which modeled after
GNU gettext package.
This library provides to translate original messages to
localized messages properly using client-side locale information
(environment variable or CGI variable).

34. On Rails
1. vim config/environment.rb
2. vim app/controllers/application.rb messy...
3. vim Rakefile
4. rake updatepo
5. (make po files from pot)
6. rake makemo

35. application

36. pot file
application

37. pot file
application
po files
ja
de
pl

38. pot file
application
po files
ja
de
pl
mo file

39. demonstration
Mac OSX, zsh, vim, Shiira, rails-1.2.3.6653

40. checkpoints

41. checkpoints
• vim config/environment.rb
• vim app/controllers/application.rb
• vim Rakefile
• rake updatepo
• (make po files from pot)
• rake makemo

42. for edger
require 'gettext/rails'
module GetText
module ErbParser
@config = {
:extnames => ['.rhtml', '.erb']
}
end
config/environment.rb
end

43. weak points
✴ Bad Knowhow
✴ _('foo')

44. weak points
• lefty:
write quot;gettextquot; now!
rgettext ;-(

45. applied theme
• singulars/plurals
• % notation
• setting locale
• edit po files on the web (Pootle)

46. That's all.
Thank you!

47. P.S.

48. On Lisp party #1
• Paul Graham
• 2007-08-19
• welcome!
http://cotocoto.jp/event/1697

49. On Lisp party #1
• Paul Graham
• 2007-08-19
• welcome!
entry now!
http://cotocoto.jp/event/1697

50. Language Dev Camp
• make your lang!
• 2007-09-**
http://wiki.fdiary.net/ldev/

51. http://stack.nayutaya.jp/
Stack Stock Books

52. • Nayutaya
• for your happy
stacked books life!
http://stack.nayutaya.jp/
Stack Stock Books

53. • Nayutaya
• for your happy
stacked books life!
http://stack.nayutaya.jp/
Stack Stock Books

54. end

55. references
• http://ja.wikipedia.org/wiki/%E8%A8%80%E8%AA%9E
• http://geekphilosopher.com/MainPage/photos.htm
• http://commons.wikimedia.org/wiki/Main_Page