activerecord/lib/active_record/associations/preloader/collection_association.rb


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# frozen_string_literal: true
module ActiveRecord
  module Associations
    class Preloader
      class CollectionAssociation < Association #:nodoc:
        private

          def preload(preloader)
            associated_records_by_owner(preloader).each do |owner, records|
              association = owner.association(reflection.name)
              association.loaded!
              association.target.concat(records)
            end
          end
      end
    end
  end
end