carrierwaveuploader/carrierwave — pull request #1326 by nikz (2014-02-27 03:19:47+00:00)
Title: Make the #remove_ accessor set the mounted column as changed

This is so that the record is still saved (and the callbacks that do the actual removal are still run) even if no other columns on the model are changed.

This can happen if using `accepts_nested_attributes_for` with a child model that has a carrierwave mounted column, for instance.