From: "sadys.humblebee@..." Date: 2005-12-25T22:12:52+09:00 Subject: Re: Where is the attribute definition of Category class? I know, i know,:-) ActiveRecord that by implementing the Object#method_missing method which will be called whevever trying to access a attribute not defined yet. Is that right? But in a big team-developing software, how can I enforce the precise reference of my classes' attributes by other developers, not refering to non-exist attribute? of course this will raise "column not found" exception at runtime, but can we prevent it from the very beginning.