From: Brad Cox <bcox@...>
Date: 2002-04-10T22:41:22+09:00
Subject: How to obtain load path from a class?

I'm building a web app environment in which web pages are singleton 
instances of Page classes, defined like this

require "OtherPage"
class SomePage < Page
	send(%Q{
<html>
	<h1>Hello world</h1>
	<p>Click #{link(OtherPage, "here")} to proceed.
</html>
})
end

The servlet context (request, response, etc) is held in the Page 
instance, whish is thus instantiated at dispatch time. This works 
fine.

The problem is that links between pages are emitted before dispatch 
time, by sending link or form messages with the target class as an 
argument (see above). This requires that the path from which the 
destination class was loaded be determinable from the class name, to 
generate the appropriate <a href="application/path/className.rb"> 
string.

So far I've been unable to find a way to obtain the load path from 
the class constant alone. Is this possible? Can someone help? Thanks!
-- 
Brad Cox, PhD; bcox@virtualschool.edu 703 361 4751
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