It was a little while ago, but I think it was because we wanted to use foreign keys, and it just seemed easier to do it directly in sql. We also wanted to use s

It was a little while ago, but I think it was because we wanted to use foreign keys, and it just seemed easier to do it directly in sql. We also wanted to use some postgres specific types that weren't supported at the time (range types) as well as a custom data type. I love writing ruby code, but the extra layer of indirection didn't seem to have much benefit to us in terms of time and effort, and we kept running into features that we wanted to use from postgres that we couldn't use from activerecord. We do write a separate down migration script.