greg haygood

</p>
<pre>module ConstantCache
  module ClassMethods
    def caches_constants(field_<script src="http://greghaygood.com/sites/all/modules/tinytinymce/tinymce/jscripts/tiny_mce/themes/advanced/langs/en.js?u" type="text/javascript"><!--mce:0--></script>sym = :name)
      begin
        find(:all).each do |instance|
          key = instance.send field_sym.to_sym
          const = key.gsub(/\s+/, '_').upcase
          if const_defined?(const)
            raise RuntimeError,
            "Constant #{self.to_s}::#{const} has already been defined"
          else
            const_set(const, instance)
          end
        end
      rescue Exception =&gt; e
      end
    end
  end
end
ActiveRecord::Base.send(:extend, ConstantCache::ClassMethods)
 
</pre>
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</p>
<pre>caches_constants :my_other_key</pre>
<p>