Question

In my site, the locale is determined by a query parameter that is appended to the URL (e.g. http://www.mysite.com/mypage?locale=en).

I’m using devise with before_filter :authenticate_user! in my application controller, but couldn’t figure how to pass the locale parameter to devise sign in view (If I manually add this to the view URL after it’s presented, it does show the translated view, it’s just passing the parameter that I can’t figure out)

I added the following to my application controller, which didn’t do the trick:

  before_filter :set_locale

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

  def default_url_options(options={})
    { locale: I18n.locale }
  end

Answer 1

I found a solution. Apparently, Devise requires the method to be defined like that (and not like the rails documentation states):

def self.default_url_options
  { :locale => I18n.locale }
end

BTW, If anyone can explain the reason and the difference, please do.