def process(self, formdata, data=unset_value):
        if formdata:
            marker = '_%s-delete' % self.name
            if marker in formdata:
                self._should_delete = True

        return super(MongoFileField, self).process(formdata, data)
dataset/ETHPy150Open flask-admin/flask-admin/flask_admin/contrib/mongoengine/fields.py/MongoFileField.process/original