Unfortunately I don't. I work less and less on the CRUD part of the apps, however as I recommended in another comment, Phoenix (Elixir's alternative to Rails) d

Unfortunately I don't. I work less and less on the CRUD part of the apps, however as I recommended in another comment, Phoenix (Elixir's alternative to Rails) does that correctly: associations are used for the purpose of querying, not as methods. In combination with isolated validations and the data gateway isolated, it's easy to achieve separation of concerns and have a more maintainable code-base.