lib/paper_trail/model_config.rb
def on_touch
      @model_class.after_touch { |r|
        r.paper_trail.record_update(
          force: true,
          in_after_callback: true,
          is_touch: true
        )
      }
    end
def on_touch
      @model_class.after_touch { |r|
        r.paper_trail.record_update(
          force: true,
          in_after_callback: true,
          is_touch: true
        )
      }
    end
Adds a callback that records a version after a "touch" event.
 @api public