Rails - Mar 2006 - Conditional Action Caching?

I have a system that requires login. This is for administrative 
purposes, so the pages will be the same as the public ones, except they 
will have the edit|delete|new options.

Right now, I have:

caches_action :index

which works great, but I''d like:

caches_action :index unless user?

where user?() is defined in application.rb.

I get an exception using this construct. Can anyone help?

Thanks,

Steve

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