Running phusion with nginx, how will pointing to public folder make this work?

开发者_开发知识库Confused here, how will pointing nginx to the /public folder make a RoR application run? The public folder doesn't have any of the .rb files in it?

Does it somehow access the folders below?

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This is just how Passenger works. You point the web server at the public folder (out of which it will serve static assets) and say that it belongs to a rails/rack app. Passenger then starts the app that the public folder is within.