Rails 3: how to use active record and mongoid at the same time

Question

I read alot that folks recommend using nosql together with sql datastores. For example have some reporting audit-trailing or log information in mysql and some threaded hiera

Answer 1

Well, to do it, you're supposed to leave Rails intact, so don't exclude libraries like it's commonly suggested in Mongoid documentation. You need to configure them separately, so you need to have a database.yml and mongo.yml config files and you need to make sure they're both getting loaded.

After that, you can enable/disable AR and Mongoid on a per-model basis.

class User < ActiveRecord::Base
  #this is an AR model
end

class Item
  include Mongoid::Document
  #this is a Mongoid model
end