# File lib/couchrest/model/associations.rb, line 188
      def initialize(array, property, parent)
        (array ||= []).compact!
        super(array, property, parent)
        self.casted_by_attribute = [] # replace the original array!
        array.compact.each do |obj|
          check_obj(obj)
          casted_by_attribute << obj.id
        end
      end