method

concat

v3.1.0 - Show latest stable - Class: ActiveRecord::Associations::CollectionAssociation

concat(*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.

# File activerecord/lib/active_record/associations/collection_association.rb, line 116
      def concat(*records)
        result = true
        load_target if owner.new_record?

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

        result && records
      end

concat

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