def save_report(self, report):
    insert_result = self.db['reports'].insert_one(report.serialize_db())
    inserted_id = insert_result.inserted_id
    return inserted_id
def save_report(self, report):
    insert_result = self.db['reports'].insert_one(report.serialize_db())
    inserted_id = insert_result.inserted_id
    return inserted_id