ruby on rails - How to set the signup page as homepage -

i've installed devise in ror app. want root site ( http://site.com ) displays devise sign page.

if user logged, redirect user dashboard. but, if user go http://site.com/dashboard , not logged, redirect home page, user can see sign up.

how can this?

thank you

update:

in routes.rb there is

root :to => 'users#index'

and in users_controller:

def index     if user_signed_in?       render 'dashboard'     else       redirect_to new_user_registration_path     end   end

it's correct?

add following routes.rb

   authenticate :user       root :to => "user_dashboard#show"     end     root :to => "devise/sessions#new"

change "user_dashboard#show" controller#method dashboard.

authenticate devise specific method routes file.

Score