Ruby on Rails 3 (3.1) ActiveModel Associations (tableless nested models)

Question

How to impliment ActiveModel associations (tableless nested models)?

For example:

book has many chapters

With ActiveRecord I would

Answer 1

You simply can't do it that way. It is not active record.

You can check ActiveModel documentation (and source code) at :

https://github.com/rails/rails/tree/master/activemodel

I guess you have to do it old fashion way, using an array of chapters and a reference to the book in the chapters.

Hope this helps!