Handy rails redirects

nice_redirects.rb

# Define in app controller
class ApplicationController < ActionController::Base
  before_filter :require_login

  # redirect somewhere that will eventually return back to here
  def redirect_away(*params)
    session[:original_uri] = request.request_uri
    redirect_to(*params)
  end

  # returns the person to either the original url from a redirect_away or to a default url
  def redirect_back(*params)   
    uri = session[:original_uri]    
    session[:original_uri] = nil    
    if uri
      redirect_to uri                                                                                                                                                     
    else
      redirect_to(*params)     
    end                        
  end

  private                      
    def require_login          
      redirect_away login_url unless self.authorized? # <-- REDIRECTING AWAY HERE (orig url saved in session)
    end  
end

class SessionsController < ApplicationController                                                                                                                            
  def create
    if user = User.authenticate(params[:email_or_user], params[:password])
      self.current_user = user
      redirect_back meetings_url # <--- REDIRECT_BACK HERE (to orig url)
    else
      flash[:error] = 'The login details you provided were not correct'
      redirect_to(login_url)
    end
  end
end