activity_log_iteration_set_end_date.rb

Property.all.each do |property|
  property.activity_logs.each do |activity_log|
    iterations = activity_log.activity_log_iterations.order('iteration_time desc')
    iterations.each_with_index do |iteration, index|
      next_iteration = iterations[index+1]
      if next_iteration.present?
        iteration.update_column(:end_date, next_iteration.iteration_time)
      end
    end
  end
end