So fresh and so new (new)

newest.rb

class Array
  def newest
    records = self.select{ |e| e.kind_of? ActiveRecord::Base }

    records.sort do |a, b|
      a.created_at <=> b.created_at
    end

    records.last
  end

    def freshest
    records = self.select{ |e| e.kind_of? ActiveRecord::Base }

    records.sort do |a, b|
      a.updated_at <=> b.updated_at
    end

    records.last
  end
end