How to generate database schema graph for one application using ActiveRecord?

Question

I want to generate graphs to describe the relations within a application using ActiveRecord, is there some gem to accomplish that?

such as this one

Answer 1

There was good gem for this: https://github.com/amatsuda/erd

But as I see it was last updated 2 years ago.

According to the README it has the following features:

• Erd draws an ER diagram based on your app's database and models
• You can drag and arrange the positions of each model
• You can operate DB schema manipulations such as add column, rename column, alter column, create model (as well as table), and drop table
• Then, Erd generates migration files on the server
• And you can run each migration on your browser