Welcome to Rails circa 5 years ago! :)
Rails still makes you write your migrations by hand. It also forces you to distribute your critical constraints, validations and dependencies over a usually incomplete model class, and incremental migration files.
In Rails/AR there is no place in the filesystem to find out about the currently declared schema.
It's a fundamentally broken design.
If you don't know the difference between AR and a declarative ORM you may want to refrain from dropping smarty oneliners.
Over the past 15yrs I've written web-apps in 7 different languages and a wide range of frameworks.
From your comment I can infer that you know Ruby on Rails, and that's pretty much it. Maybe you should reconsider your tone?