MongoMapper: Get all models

Question

Does anyone know of an easy way to fetch the class names of all models that have MongoMapper::Document включено?

MongoMapper class doesn't appear to have the equivalent of ActiveRecord::Base.subclasses,

The best I can come up with is using MongoMapper.database.collection_names и немного ObjectSpace хаки.

A further complication is that I have modules (subfolders) in the app/models папка. Так, class DS::Thingy в моем apps/models/ds/thingy.rb,

Answer 1

Как насчет чего-то вроде:

class MongoModels
  def self.all
    @@models ||= []
  end
end

module MongoMapper
  module Document
    def self.included(klass) 
      MongoModels.all << klass
    end
  end
end

тогда MongoModels::all вернет массив моделей.

Document.rb MongoMapper делает:

included do
  extend Plugins
  extend Translation
end

Так что вам может понадобиться повторить это.