ruby on rails i18n

An approach:

$script/plugin install git://github.com/svenfuchs/rails-i18n.git

$cp config/locales/en.yml config/locales/es-ar.yml

config/environment.rb

  config.time_zone = 'Buenos Aires'
  config.i18n.default_locale = :"es-ar"

app/views/payment_operation/show.html.erb

<%= t('views.payment.show_title', :count => @foo.size, :bar => @foo.name) %>

config/locales/es-ar.yml

es-ar:
    views:
      payment:
        show_title: 
          zero: "Mostrando operación de pago y {{bar}}."
          one: "Mostrando operación de pago y {{bar}}."
          many: "Mostrando operación de pago y {{bar}}."