Rails route to model instance - by domain name -

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i have rails 3 application, say, hotels, hotels belong parent areas. when user hits app (served mongrel >> nginx), want domain name used in request decide area of hotels serve (domain name >> area). achieve can see 2 options:

1) rewrite url nginx, inserting area id after domain name (e.g. birminghamhotels.co.uk => proxy_pass http://myupstream/areas/3$request_uri).

benefits: domain object mapping happens accepted domains defined: nginx.conf. should transparent users (pretty urls possible rewritten).

drawbacks: breaks rails url helpers, no more link_to or form_for. hard-coded object reference naughty.

2) catch domain name in routes.rb , area via unique "domain" attribute each area (or has_many if fancy).

benefits: should allow use of rails url helpers. requested domain linked directly resource exceptions can handled.

drawbacks: without rewriting urls nginx, wouldn't users see: birminghamhotels.co.uk/areas/3/hotels/42 instead of birminghamhotels.co.uk/hotels/42? also, don't have clue how it!

so, i've tried option #1 ran trouble url helpers etc. i've tried come way of trying option #2 haven't been able suss correct syntax despite lot of ogling. fact cannot find answers searching makes me think got wrong end of problem. there third option? how solve it?

oh , btw, not building hotel listing website - plenty enough of around already. happened close enough example.

assuming each area has sort of domain_name field, seems should able this:

class hotelscontroller < applicationcontroller   def index     @hotels = area.find_by_domain_name(request.subdomains.first).hotels   end end

you refactor named_scope using lambda if like.


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