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If I look at this from a beginner's viewpoint, there are lots of "scary" words here. Can we come up with a good, basic overview of what Active Model does?
How does Active Model differ from Active Record?
Why would I use one over the other?
Well ActiveModel actually does not allow you to pull data from the database. It mostly just offers a common API for all the ORMs (like ActiveRecord) to use, guaranteeing that writing code against ActiveModel will allow to switch the actual ORM implementations. This is pretty much what the original description explains imho. And I don't personally see how "utilize", "interfacing" etc are scary words :P
Closing this. Positive changes are welcome in docrails.