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I18n Backends

#256 I18n Backends

Mar 07, 2011 | 11 minutes | Views
Internationalization is easy to add in Rails, but the YAML files can be difficult to manage. In this episode I show how to use Redis for managing the translations through a web interface.
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bash 
rails g controller translations index
brew install redis
Gemfile 
gem 'redis'
config/initializers/i18n_backend.rb 
TRANSLATION_STORE = Redis.new
I18n.backend = I18n::Backend::Chain.new(I18n::Backend::KeyValue.new(TRANSLATION_STORE), I18n.backend)
translations_controller.rb 
def index
  @translations = TRANSLATION_STORE
end

def create
  I18n.backend.store_translations(params[:locale], {params[:key] => params[:value]}, :escape => false)
  redirect_to translations_url, :notice => "Added translation"
end
home/index.html.erb 
<h1><%= t "welcome" %></h1>
translations/index.html.erb 
<h1>Translations</h1>

<ul>
<% @translations.keys.each do |key| %>
  <li><%= key %>: <%= @translations[key] %></li>
<% end %>
</ul>

<h2>Add Translation</h2>

<%= form_tag translations_path do %>
  <p>
    <%= label_tag :locale %><br />
    <%= text_field_tag :locale %>
  </p>
  <p>
    <%= label_tag :key %><br />
    <%= text_field_tag :key %>
  </p>
  <p>
    <%= label_tag :value %><br />
    <%= text_field_tag :value %>
  </p>
  <p><%= submit_tag "Submit" %></p>
<% end %>
config/locales/en.yml 
en:
  welcome: "Welcome"