Scaffold help please!

I need some help please, im am doing a movie list so i first do a
for movies:
ruby script/generate scaffold movie title:string description:text
and it works ok
but then i do a second scaffold to create person table
ruby script/generate scaffold person name:string role:integer
till that it seems all right but i put in my browser the controller for
new person I add a new person but nothing happends whats wrong!!!

thank you!

Felipe V. Contesse
Ingeniería Civil Industrial UC