Authlogic Rails 3.1

Which version of authlogic are people using with Rails 3.1.

I have the following entry in my gemfile:

gem 'authlogic', :git => 'https://github.com/AndreasWurm/authlogic.git'

The problem I have is with a piece of code in my base ApplicationController.

def require_no_user
  if current_user
    store_location
    flash[:notice] = "You must be logged out to access this page"
    redirect_to :controller => "home", :action => "index"
    return false
  end
end

def store_location
  session[:return_to] = request.request_uri
end

The error I am getting is with the line:

session[:return_to] = request.request_uri

I am getting an error saying:

undefined method `request_uri' for #<ActionDispatch::Request:0x7dadd4d8>

Has Request_uri been removed from ActionDispatch and if so, what is the correct alternative?