MySQL workbench <--> Rails?

A long time ago ... on a planet far away... a user posted something about visualizing a ruby schema in MySQL Workbench. The answer was to dumb the schema as SQL and then import into Workbench.

I tried to send the originator a quick email but failed so perhaps someone here could update or enlighten me.

I'm at a similar place but going in the opposite direction, where I'd like to model a project in MySQL Workbench and then generate the Ruby database structure. A huge bonus would also cover additional migrations from the MySQL Workbench.

I realize that some folks have created migration tools but it isn't clear which one is closest to what I need. As for the migrations, I've thought it might even be possible to dump out the Rails db and then the Workbench db ... have a script do a diff and then code the a migration script but I don't want to repeat what someone might have already done.

Any thoughts on the subject?

David