method

<<

v2.2.1 - Show latest stable - 0 notes - Class: ActiveRecord::Associations::AssociationCollection

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What's this?

<<(*records) public

Add records to this association. Returns self so method calls may be chained. Since << flattens its argument list and inserts each record, push and concat behave identically.

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# File activerecord/lib/active_record/associations/association_collection.rb, line 107
      def <<(*records)
        result = true
        load_target if @owner.new_record?

        transaction do
          flatten_deeper(records).each do |record|
            raise_on_type_mismatch(record)
            add_record_to_target_with_callbacks(record) do |r|
              result &&= insert_record(record) unless @owner.new_record?
            end
          end
        end

        result && self
      end

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