Remove Invalid

The remove_invalid plugin automatically deletes and deassigns a new assigned file if it was invalid. If there was a previous file attached, it will be assigned back.

plugin :remove_invalid

# without previous file
photo.image        #=> nil
photo.image = file # validation fails, assignment is reverted
photo.valid?       #=> false
photo.image        #=> nil

# with previous file
photo.image        #=> #<Shrine::UploadedFile id="foo" ...>
photo.image = file # validation fails, assignment is reverted
photo.valid?       #=> false
photo.image        #=> #<Shrine::UploadedFile id="foo" ...>