for attachment in self.attachment_set.all():
full_name = os.path.join(settings.MEDIA_ROOT, attachment.file.name)
f = IOFile.from_filename(full_name)
for attachment in self.attachment_set.all():
full_name = os.path.join(settings.MEDIA_ROOT, attachment.file.name)
f = IOFile.from_filename(full_name)