When we upgraded from Rails 1.x to 2.x, we also had to migrate from Masochism to DataFabric. Unfortunately, the DataFabric way of doing things requires adding a declaration to each of the model classes. For a site like TouchLocal, where there are literally hundreds of model classes, this was a daunting task.
I’ve just gone through extracting the magic that makes it possible to do this programatically, released as DataFabric::Initializer. I hope it helps someone other than me!