i18n_toolbox 
I18n_toolbox is a collection of helpers and active_model additions that solve basic problems that kept showing up when working with multiple language sites:
- Showing different images for different locales
- Different validates_length_of values for different locales
- Truncating text to different lengths depending on locale
- Applying "possessive case" correctly with correct use of apostrophes for different languages (ie "Jack's Recipes", "Miles' Recipes", "Recettes de Julien")
Usage
image_tag
Serve up a different image depending on locale.
I18n.locale = :en
image_tag('logo.png', localize: true) # => /images/en/logo.png
I18n.locale = :ja
image_tag('logo.png', localize: true) # => /images/ja/logo.pngtruncate
Truncate text that appears longer on screen (such as 2 byte Japanese) to avoid breaking layouts dependent on length of text.
config/locales/ja.yml
ja:
i18n_toolbox:
character_ratio: 0.5Output:
I18n.locale = :en
truncate("2 byte characters are wider", length: 20, localize: true) # => "2 byte characters..." (20 chars)
I18n.locale = :ja
truncate("2 byte characters are wider", length: 20, localize: true) # => "2 byte ..." (10 chars)validates_length_of
Have different validation lengths for different locales.
config/locales/ja.yml
ja:
i18n_toolbox:
character_ratio: 0.5Model:
class Post < ActiveRecord::Base
validates_length_of :title, maximum: 40, localize: true
# ...
end
I18n.locale = :en
Post.new(title: 'English sentences use more chars').valid? # => true, length is under 40
I18n.locale = :ja
Post.new(title: 'Japanese sentences use fewer chars').valid? # => false, length is over 20possessive
Often used for user page titles, such as "Michael's Activity Feed" etc.
config/locales/en.yml
en:
i18n_toolbox:
possessive: "%{owner}'s %{thing}"
possessive_s: "%{owner}' %{thing}"config/locales/fr.yml
fr:
i18n_toolbox:
possessive: "%{thing} de %{owner}"Output:
I18n.locale = :en
possessive('Jack', 'Recipes') # => "Jack's Recipes"
possessive('Miles', 'Recipes') # => "Miles' Recipes"
I18n.locale = :fr
possessive('Julien', 'Recettes') # => "Recettes de Julien"
possessive('Jacques', 'Recettes') # => "Recettes de Jacques"License
MIT License. Copyright 2012 Cookpad Pte http://cookpad.it