Change language

gistfile1.txt

// This goes in the application controller
before_action :set_locale
def set_locale
  if current_user and current_user.locale
    I18n.locale = current_user.locale[0..1]
  else
    if session[:lang]
      I18n.locale = session[:lang]
    else
      I18n.locale = request.env["HTTP_ACCEPT_LANGUAGE"] || :en
    end
  end
end


// This is the action, can go in any controller, of course we would need to add a route for this.
def change_language
    if params[:lang]
      I18n.locale = params[:lang]
      if current_user
        current_user.locale = params[:lang]
        current_user.save
      else
        session[:lang] = params[:lang]
      end
    end
    if request.env["HTTP_REFERER"]
      redirect_to :back
    else
      redirect_to(:controller => 'home', :action => 'index')
    end
  end