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Mix In Common Model Behaviors In Rails With “Concerns”

By Peter Cooper / January 19, 2007

In Concerns in ActiveRecord, Jamis Buck writes about a simple technique of using modules to mix in functionality shared by multiple models without resorting to STI. This technique has been possible in Rails since.. ever, but I must admit I'd never considered it before, so I'm sure a lot of people will find it useful.

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