class Lato::ApplicationController

def index 

def index
  session_root_path = Lato.config.session_root_path ? main_app.send(Lato.config.session_root_path) : lato.account_path
  redirect_to @session.valid? ? session_root_path : lato.authentication_signin_path
end

def override_request_remote_ip

For example if the application is behind a nginx proxy the request.remote_ip will be the ip of the proxy and not the ip of the user.
This method is used to get the real ip of the user when the application is behind a proxy.
This method override the request remote ip with the X-Forwarded-For header if exists. 
def override_request_remote_ip
  request.remote_ip = request.headers['X-Forwarded-For'] if request.headers['X-Forwarded-For']
end

def respond_to_redirect_same_page(notice = nil) 

def respond_to_redirect_same_page(notice = nil)
  respond_to do |format|
    format.html { redirect_to request.referer, notice: notice }
    format.json { render json: {} }
  end
end

def respond_to_with_not_found 

def respond_to_with_not_found
  respond_to do |format|
    format.html { render plain: '', status: :not_found }
    format.json { render json: {}, status: :not_found }
  end
end

def set_default_locale

The default locale is the locale of the user if exists, otherwise is the default locale of the application.
This method set the default locale for the application. 
def set_default_locale
  return unless @session.valid?
  I18n.locale = @session.user.locale || I18n.default_locale
end

def switch_locale 

def switch_locale
  I18n.locale = params[:locale]
  @session.user.update(locale: params[:locale]) if @session.valid?
  respond_to_redirect_same_page
end