preload_associations

# File activerecord/lib/active_record/relation.rb, line 727
    def preload_associations(records) # :nodoc:
      preload = preload_values
      preload += includes_values unless eager_loading?
      preloader = nil
      preload.each do |associations|
        preloader ||= build_preloader
        preloader.preload records, associations
      end
    end