A: 

Add this line:

map.sign_in '/sign_in', :controller => 'session', :action => 'new'

To your config/routes.rb.

Eugenio Depalo
That looks very rails 2-ish.
chadoh
A: 

The

match "sign_in" => "sessions#new"

line creates a route called "sign_in" which you can use in place of "new_session". So anywhere you had been linking to things with "new_session_path", replace it with "sign_in_path".

That's good enough. What I was originally hoping to do would be nice, though--to have "new_session_path" link to the same thing as "sign_in_path". To be able to specify a path_name that doesn't include the controller in it. Then I wouldn't need the match line at all.

chadoh
+2  A: 
match "sign_in" => "sessions#new", :as => :new_session
PreciousBodilyFluids
This lets you use "new_session_path" and gets rid of the "sign_in_path". Which is what I originally wanted to do.Awesome.
chadoh