Question

I have an app that needs to respond to different url’s. I am using Nginx and want to set the environment variable for host, but I don’t know how to set it or get that env variable back out in the controller. For example, I want something like this…

http://sillyname.com/page_name/home

nginx sets the ENV[‘HOST’] = $host

and rails routes to page controller action => show, params page_name => home. Then in the controllers show action

def show
  @website = Website.find_by_host_name(ENV['HOST'])
  @page = @website.page.where("title",params[:page_name])
  ...
end

My specific questions are:

1. what directive do I use in nginx do I use to set this variable, or is it already accessible in a rails 3 app?

2. how do I access the ENV variable in the app to correctly query the db?

Answer 1

You should be able to get the information out of the request object in your controller. Please check specifically:

request.host

or investigate into

request.env