The current ModelFieldFile directive allow you to select or replace a file but does not allow the user to clear the field or remove the file. <img width="756" alt="screen shot 2016-09-06 at 9 27 43 pm" src="https://cloud.githubusercontent.com/assets/5817734/18299815/ceadecda-7478-11e6-9f4a-702ed853d03e.png">