What are you seeing? Is it raising an error? Is there an error message in the console when running "script/server"? For this to work, there should be something to handle the path "new", typically a controller called "NewsController" (plural form) or some rule in the routes.rb
file.
If you are seeking to create a new address, then you may be looking for something like
if conditions
redirect_to new_address_path
end