i love rails, but i’d point out that business logic exists all over the place in a rails app, not just in the controllers. that’s because rails has no standard solution for compound requests (those involving many models and/or multiple actions) that go beyond the simple semantics of http verbs (which i totally appreciate for what they are). some might say that’s a design issue to be worked out depending on the situation, but sometimes, you just need to do lots of different stuff in a single request context.

rails doesn’t cope with that issue very well (some suggest a command or strategy pattern, others service objects, etc.), which is one of the only major criticisms i have with rails. node/npm dependency was another big criticism, but they’re fixing that with rails 7. =)