method

first_or_last

v3.2.13 - Show latest stable - Class: ActiveRecord::Associations::CollectionAssociation

first_or_last(type, *args)

private

Fetches the first/last using SQL if possible, otherwise from the target array.

# File activerecord/lib/active_record/associations/collection_association.rb, line 570
        def first_or_last(type, *args)
          args.shift if args.first.is_a?(Hash) && args.first.empty?

          collection = fetch_first_or_last_using_find?(args) ? scoped : load_target
          collection.send(type, *args).tap do |record|
            set_inverse_instance record if record.is_a? ActiveRecord::Base
          end
        end

first_or_last

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