From: leandro nascimento camargo <leandroico@...>
Date: 2007-02-09T10:30:11+09:00
Subject: Re: is_class from a String?

Yay!
Solved!
I simply used an exception treatment like this:

is_model =
	begin
		ActiveRecord.const_get(c.name[0...-3].camelize).is_a? Class
	rescue StandardError => e
		false
	end