class Application < Merb::Controller
 
  private
  def try_authentication(*args)
    begin
      ensure_authentication(*args)
    rescue Unauthenticated
    end
  end
 
end

class Foo < Application
 
  before :try_authentication
 
end

class RememberMeStrategy < Merb::Authentication::Strategy
  def run!
    if request.cookies[:auth_token]
      if user = User.first(:auth_token=> request.cookies[:auth_token])
        if user.valid_token?
          return user
        end
      else
        cookies.delete(:auth_token)
        nil
      end
    end # if cookie[:auth_token]
  end # run! 
end # RememberMeStrategy
 
# Runs after every time the user logs in
Merb::Authentication.after_authentication do |user,request,params|
  if params["remember_me"].to_i == 1
    token = user.make_token
    request.cookies.set_cookie(:auth_token,user.auth_token,{:expires=>user.token_expires_on.to_time})
  end
  user
end

class MerbAuthPasswordSlice::Sessions
  after :destroy, :clean_auth_token
 
  private
  def clean_auth_token
    cookies[:auth_token] = nil
  end
end