Rails are definitely inspiration for the way Ash DSLs are used to model your business domain, but Ash takes this idea way further.

Ash models nouns and relationships like ActiveRecord does, but it also models Domains (think DDD bounded contexts) and Resources with the verbs or "actions" of your system.

It also lets you configure generated APIs and your data layer (eg Postgres) so it doesn't stop at just how an ORM may typically model your data.

Always cracks me up. In previous life I worked in creative agency and we had a Project Manager called Ruby. Sometimes parties were getting out of hand and she got a nickname Ruby on Rails when she dropped a baggie on the table and made herself two lines (rails) with company credit card.