Rails app local and remote authentication with Devise ( 2 strategies )

Rails app local and remote authentication with Devise ( 2 strategies )

I am trying to setup 2 authentification strategies using Devise the
standard one ( :database_authenticable ) and if this one fails another try
is performed against another remote server :remote ( as described
http://4trabes.com/2012/10/31/remote-authentication-with-devise/ )
if I add in my devise.rb initializer the config.warden block
config.warden do |manager|
manager.strategies.add(:remote, Devise::Strategies::RemoteAuthenticatable)
manager.default_strategies(:scope => :user).unshift :remote
end
then :remote becomes the default strategy, but this not what I am looking
for .. I would like to have first
Devise::Strategies::DatabaseAuthenticatable then if it fails
Devise::Strategies::RemoteAuthenticatable
I know it's possible as warden accepts cascading strategies.... as
described at https://github.com/hassox/warden/wiki/Strategies Using
strategies..
but I don't see how to implement it ...