Question

我有以下模型架构：

{
  _id: foo
  cart: {
    items: [
      { 
        id: number
        name: string,
      }
    ]
  }
}

我想按其ID查找文档，然后更新具有另一个指定ID的name数组中对象的items值。

我已经尝试过了，但是没有用：

Order.findOneAndUpdate(
  {
    "_id": orderId,
    "cart.items": {
      $elemMatch: {
        id: itemId,
      }
    },
  },
  {
    $set: {
      "cart.items.$.name": name,
   },
 },
);

此查询找到正确的文档，但没有正确更新。正确的方法是什么？

Answer 1

  @objc func startRedBalloon() {
        let xOrigin = arc4random_uniform(208) + 1
        let xEnding = arc4random_uniform(208) + 1

        //red
        redBalloon.isHidden = false
        redBalloon.image = UIImage(named: "redBalloon")
        redBalloon.contentMode = .scaleAspectFit
        redBalloon.frame = CGRect(x: Int(xOrigin), y: 667, width: Int(redBalloon.frame.size.width), height: Int(redBalloon.frame.size.height))
        animRed.addAnimations {
            self.redBalloon.frame = CGRect(x: Int(xEnding), y: -116, width: 100, height: 116)
        }
        animRed.addCompletion { _ in
            self.redEndGame()
        }

        let imageTapRed = UITapGestureRecognizer(target: self, action: #selector(imageTappedRed))
        redBalloon.isUserInteractionEnabled = true
        redBalloon.addGestureRecognizer(imageTapRed)
        animRed.startAnimation()
    }

或

const order = await Order.findOneAndUpdate({
    "_id": orderId,
    "cart.items.id": itemId,
  },
  {
    $set: {
      "cart.items.$.printUrl": printUrl,
    },
  },
});

更新猫鼬模型数组中的对象

1 个答案: