Under 80 lines is a problem. Most of the designs that DHH doesn't like are from complicated applications that need to deviate from The Rails Way. I built my e

Under 80 lines is a problem. Most of the designs that DHH doesn't like are from complicated applications that need to deviate from The Rails Way. I built my e-commerce business with Rails/ActiveRecord back in 2006, when rails was at version 0.7. For the first few years, I followed rails conventions religiously. There's a point where you have to outgrow them. And that legacy approach is a major pain now. Having a class that wraps a database table and contains all the functionality that accesses that table doesn't scale at a certain point. But I'm not going to try to show those pains in under a couple hundred lines of code that someone can understand in an hour. Anything that can be compressed to that point doesn't need a complicated design.