gistfile1.rb

class Spot
  include Mongoid::Document
  include Mongoid::Timestamps 
  
  ## Fields ##
  field :name_t
  
  ## Associations ##
  embeds_many :items
 
  include Sunspot::Mongoid
  searchable do
    text :name, :boost => 10
    text :items_names do
        items.map { |item| item.name }
    end

  end
end

s = Spot.first
s.items.build(:name=> 'Pizza') 
s.save #=> true