I would argue that Rails doesn’t *automate* CRUD app development (after all no real app would ship the result of rails generate scaffold) but rather it *formalized the concept.*

What I mean by this is to say the REST endpoints & foundation of associated pages—however you dress them up—was solidified as the foundational concept for all app development by Ruby on Rails.

If you want an example of actually *automating* this, you should check out “no code” tools like the company I cofounded Boundless Labs.