Rails - Oct 2007 - Finding layouts

I''m trying to find out whether a particular layout file exists at 
runtime. I need to potentially change the layout depending on which 
"site" a customer is visiting. I can do this by calling a method in
the
controller to determine the layout similar to:

   def customer_layout
     if @site_id.nil?
       return "customer_standard"
     else
       return "customer_site_" + @site_id.to_s
     end
   end

I need to determine if a particular site does indeed have a custom 
layout, if not then fall back to the standard one. So I need to see if 
"customer_site_123.rhtml" actually exists in the layout directory. The
problem is I don''t want to hard code absolute paths that are certain to
change on deployment.

Is there a way to determine what the current layout directory is so I 
can use that to try and find the file?

Eventually this will apply to css and image folders so any pointer there 
will help too.

Thanks,
Gary.

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On 10/30/07, Gary Doades <gpd-UVRRe/+0hzLQXOPxS62xeg@public.gmane.org>
wrote:
>
> I''m trying to find out whether a particular layout file exists at
> runtime.
> Is there a way to determine what the current layout directory is so I
> can use that to try and find the file?
>
> Eventually this will apply to css and image folders so any pointer there
> will help too.
RAILS_ROOT is the "top" of your application, so you can do a check
like:

   File.exists?("#{RAILS_ROOT}/app/views/layouts/somefile.rhtml")

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