I have one Symfony2 project named SymfonyProject.
I had until now one nginx config file that points to that project with www.symfonyproject.com
I developed some static twig pages in the SymfonyProject which I would like to access with another url: www.symfonyproject2.com
So, the www.symfonyproject2.com will only access one route from the SymfonyProject.
How to do this with Nginx? I created another config file in sites enabled, but don't know how to redirect trafic to a specific symfony2 route.
Actually your nginx can use the www.symfonyproject2.com
as alias and inside symfony you can use a route which is going to match by hostname:
http://symfony.com/doc/current/components/routing/hostname_pattern.html
This should be enough to solve your problem!
Let me know if it helped you!