Sinatra extension which provides i18n support to translate your web application.

It is a wrapper for R18n core library. See R18n documentation for more information.

• Nice Ruby-style syntax.
• Filters.
• Flexible locales.
• Custom translations loaders.
• Translation support for any classes.
• Time and number localization.
• Several user language support.

1. Create translations dir ./i18n/.

2. Add file with translation to ./i18n/ with language code in file name (for example, en.yml for English or en-us.yml USA English dialect). For example, ./i18n/en.yml:

   post:
     friends: Post only for friends
     tags: Post tags are %1
   
   comments: !!pl
     0: No comments
     1: One comment
     n: '%1 comments'
   
   html: !!html
     <b>Don't escape HTML</b>

3. Add R18n to your Sinatra application:

   require 'sinatra/r18n'

   If your application inherits from Sinatra::Base also add:

   class YourApp < Sinatra::Base
     register Sinatra::R18n
     set :root, __dir__

4. Add locale to your URLs. For example:

   get '/:locale/posts/:id' do
     @post = Post.find(params[:id])
     haml :post
   end

   Or save locale in session, when user change it:

   before do
     session[:locale] = params[:locale] if params[:locale]
   end

   Warning: such hooks have to be before register Sinatra::R18n since R18n version 5 has no more lazy evaluation and initializes immediately. See #3 or specs / test application.

5. Use translation messages in views. For example in HAML:

   %p= t.post.friends
   %p= t.post.tags(@post.tags.join(', '))
   
   %h2= t.comments(@post.comments.size)

6. Print localized time and numbers. For example:

   l @post.created_at, :human

7. Print available translations. For example in HAML:

   %ul
     - r18n.available_locales.each do |locale|
       %li
         %a( href="/#{locale.code}/" )= locale.title

You can change default locale and translations dir:

R18n::I18n.default = 'ru'
R18n.default_places { './translations' }

R18n is licensed under the GNU Lesser General Public License version 3. You can read it in LICENSE file or in www.gnu.org/licenses/lgpl-3.0.html.

Andrey “A.I.” Sitnik andrey@sitnik.ru