Introduction

We all know that in Domain-Driven Design it is good to express our domain with simplicity and “pureness” and for that we usually go for a POxO (Plain Old {fill_with_your_preffered_language} Object) approach. The problem is that the ORM solutions I’ve found for Ruby make us either inherit from some base class or do the mappings directly into our classes. By no means am I saying that they aren’t good, but we are talking about DDD and the idea of having a pure domain layer without distractions is something we should embrace.