controller.rb

class Controller < ActionController::Base
  include DevelopmentLogging if Rails.env.development?
end

development_logging.rb

module DevelopmentLogging
  def self.included(controller)
    controller.before_action :print_empty_lines_in_log
  end

  private

  def print_empty_lines_in_log
    10.times { logger.info '' }
  end
end