from typing import Optional
from sqlalchemy.orm import Session
from mooc.crud.crud_base import CRUDBase
from mooc.models.qrcode import Qrcode
from mooc.schemas.qrcode import QrcodeCreate, QrcodeUpdate

class CRUDQrcode(CRUDBase[Qrcode, QrcodeCreate, QrcodeUpdate]):
    def get_by_id(self, db: Session, *, id: int) -> Optional[Qrcode]:
        return self.get_by_field(db, "Id", id)  # 注意这里使用 "Id" 而不是 "id"

# 创建实例
qrcode = CRUDQrcode(Qrcode)