from typing import Optional from sqlalchemy.orm import Session from mooc.crud.crud_base import CRUDBase from mooc.models.qrcode import QrcodeStat from mooc.schemas.qrcode import QrcodeStatCreate, QrcodeStatUpdate class CRUDQrcodeStat(CRUDBase[QrcodeStat, QrcodeStatCreate, QrcodeStatUpdate]): def get_by_id(self, db: Session, *, id: int) -> Optional[QrcodeStat]: return self.get_by_field(db, "Id", id) # 注意这里使用 "Id" 而不是 "id" # 创建实例 qrcode_stat = CRUDQrcodeStat(QrcodeStat)