instantiate

# File activerecord/lib/active_record/associations/join_dependency.rb, line 46
      def instantiate(rows)
        primary_key = join_base.aliased_primary_key
        parents = {}

        records = rows.map { |model|
          primary_id = model[primary_key]
          parent = parents[primary_id] ||= join_base.instantiate(model)
          construct(parent, @associations, join_associations, model)
          parent
        }.uniq

        remove_duplicate_results!(active_record, records, @associations)
        records
      end