Original title: A field called "id" can not be set or updated with Document#create or Document#update

I am trying to access an existing database, which has an "id" field that is separate from the "_id" field, and is application managed.

My document definition looks like this:

class Instance
  include Mongoid::Document

  self.aliased_fields.delete("id") # see MONGOID-2031
  store_in collection: 'app_instances'

  field :id, type: String

  field :name, type: String
  field :update_time, type: Float
end

With this code, querying works, at least, but inserting/updating does not.

Is there a similar monkey patch to the one recommended in MONGOID-2031, or would this be even more of a mess?