gistfile1.rb

class FooBar
  include Mongoid::Document
  field :query_subject, :type => String
  field :content, :type => String
  
  class << self
    
    def find_current (query_subject)
      self.where(:query_subject => query_subject).order_by(:created_at.desc).first
    end
    
  end
  
end


class HtmlDocument < FooBar
  extend DocWrapperHelpers
  
  def to_dom
    @html_dom ||= Nokogiri::HTML(content)
  end
end

class SpyOnWebDocument < HtmlDocument
  doc_wrapper DocWrappers::SpyOnWebDocWrapper
  doc_wrapper_property :adsense_domains
end


   When I populate the adsense data                 # features/step_definitions/worker_steps.rb:24
      Access to the collection for SpyOnWebDocument is not allowed since it is an embedded document, please access a collection from the root document. (Mongoid::Errors::InvalidCollection)
      org/jruby/RubyKernel.java:2038:in `send'
      ./app/models/foo_bar.rb:9:in `find_current'
      ./app/services/find_or_create_service.rb:16:in `find_current'
      ./app/services/find_or_create_service.rb:12:in `execute'
      ./app/services/populator.rb:31:in `find_or_create_source_document'
      ./app/services/populator.rb:17:in `execute'
      ./features/step_definitions/worker_steps.rb:29:in `(root)':in `/^I populate the adsense data$/'
      features/workers/populate_adsense.feature:12:in `When I populate the adsense data'