rails 3 i18n set locale does not work

i would like translations to fallback to :en, but the default locale is :de. how can i achieve this best? i tried in 'config/application.rb'

config.i18n.default_locale = :en
conf开发者_如何学运维ig.i18n.locale = :de

but I18n.locale is still :en after this. any ideas?

If you set locale like the following line

I18n.locale = :de

Then after the line triggered, EVERY visitor will using de locale, not the default locale en.

So the better way is

In your application_controller.rb

before_filter: set_locale

private


def set_locale
  I18n.locale = params[:locale] || I18n.default_locale
end

Reply to Jonathan Clark:

Every controller inherited from application_controller will set the locale.

You cant set the locale in your environments.

you have to put default_locale in your environment config file and you have to set your locale in your application itself.

For example in your application_controller.rb

before_filter: set_locale

private

  def set_locale
    I18n.locale = params[:locale] if params[:locale]
  end