Question

What is the better way to cache fields of referenced document in Mongoid?

Currently I use additional fields for that:

class Trip
  include Mongoid::Document

  belongs_to :driver

  field :driver_phone
  field :driver_name

end

class Driver
  include Mongoid::Document

  field :name
  field :phone
end

May be it would be more clear to store cache as nested object so in mongo it would be stored as:

{ driver_cache: { name: "john", phone: 12345 } }

I thought about embedded document with 1-1 relation? Is that right choice?

Answer 1

Author of Mongoid (Durran Jordan) suggested folowing option

This gem looks handy for this type of thing:

https://github.com/logandk/mongoid_denormalize