After the second day of RGSoC, we know that this gem ahoy doesn’t work properly in Rails 3.2.
Rails 3.2 do not support uuid and json. Our coach, Piotr, found postgres_ext, which adds uuid to Rails 3.2, but doesn’t support json. We had to modificate migrations and use SQL.
It took almost c.a. 5 hours of our work… but the first pancake is always spoiled… 🙂