尽管在保存之前进行了设置，但 LastUpdated 字段上的 Mongoose 验证错误

Question

我在 Node.js/Express 应用程序中遇到了 Mongoose 的一些问题，非常感谢您的帮助。当我尝试更新 MongoDB 中的

Restaurant

文档时，就会出现问题。我收到一条验证错误，提示

lastUpdated

字段是必需的，即使我在保存文档之前明确设置了该字段。

错误信息：

error Error: Restaurant validation failed: lastUpdated: Path `lastUpdated` is required.
    at ValidationError.inspect (/opt/render/project/src/node_modules/mongoose/lib/error/validation.js:50:26)
    at formatValue (node:internal/util/inspect:806:19)
    at inspect (node:internal/util/inspect:365:10)
    at formatWithOptionsInternal (node:internal/util/inspect:2304:40)
    at formatWithOptions (node:internal/util/inspect:2166:10)
    at console.value (node:internal/console/constructor:338:14)
    at console.log (node:internal/console/constructor:383:61)
    at /opt/render/project/src/dist/controllers/MyRestaurantController.js:81:17
    at Generator.throw (<anonymous>)
    at rejected (/opt/render/project/src/dist/controllers/MyRestaurantController.js:6:65) {
  errors: {
    lastUpdated: ValidatorError: Path `lastUpdated` is required.
        at validate (/opt/render/project/src/node_modules/mongoose/lib/schemaType.js:1385:13)
        at SchemaType.doValidate (/opt/render/project/src/node_modules/mongoose/lib/schemaType.js:1369:7)
        at /opt/render/project/src/node_modules/mongoose/lib/document.js:3071:18
        at process.processTicksAndRejections (node:internal/process/task_queues:85:11) {
      properties: [Object],
      kind: 'required',
      path: 'lastUpdated',
      value: undefined,
      reason: undefined,
      [Symbol(mongoose#validatorError)]: true
    }
  },
  _message: 'Restaurant validation failed'
}

相关代码：

猫鼬架构：

const restaurantSchema = new mongoose.Schema({
  user: { type: mongoose.Schema.Types.ObjectId, ref: "User" },
  restaurantName: { type: String, required: true },
  city: { type: String, required: true },
  country: { type: String, required: true },
  deliveryPrice: { type: Number, required: true },
  estimatedDeliveryTime: { type: Number, required: true },
  cuisines: [{ type: String, required: true }],
  menuItems: [menuItemSchema],
  imageUrl: { type: String, required: true },
  lastUpdated: { type: Date, default: Date.now },
});

const Restaurant = mongoose.model("Restaurant", restaurantSchema);

控制器代码：

const updateMyRestaurant = async (req: Request, res: Response) => {
  try {
    // Log incoming request data
    console.log("Request body before update:", req.body);

    const restaurant = await Restaurant.findOne({ user: req.userId });

    if (!restaurant) {
      return res.status(404).json({ message: "Restaurant not found" });
    }

    // Update fields
    restaurant.restaurantName = req.body.restaurantName;
    restaurant.city = req.body.city;
    restaurant.country = req.body.country;
    restaurant.deliveryPrice = req.body.deliveryPrice;
    restaurant.estimatedDeliveryTime = req.body.estimatedDeliveryTime;
    restaurant.cuisines = req.body.cuisines;
    restaurant.menuItems = req.body.menuItems;
    restaurant.lastUpdated = new Date(); 

    if (req.file) {
      const imageUrl = await uploadImage(req.file as Express.Multer.File);
      restaurant.imageUrl = imageUrl;
    }

    await restaurant.save();
    res.status(200).send(restaurant);
  } catch (error) {
    console.log("Error during restaurant update:", error);
    res.status(500).json({ message: "Something went wrong" });
  }
};

我希望正确设置

lastUpdated

字段，并且更新操作成功，没有任何验证错误。我尝试过以下方法：

• 确保在保存文档之前为

  lastUpdated

  分配了新的

  Date()

  值。

• 在调用

  lastUpdated

  确认已设置之前记录

  save()

  的值。

• 仔细检查架构以确保

  lastUpdated

  具有默认值并且未标记为必需。

尽管做出了这些努力，验证错误仍然存在，并且更新失败。我希望深入了解可能导致此问题的原因以及如何解决它。

Answer 1

问题出在下面一行：

restaurant.lastUpdated = new Date(); 

耶稣出生日期的默认日期

(1.1.1 00:00:00)

被认为是

not defined

或

empty

。将其更改为以下内容：

restaurant.lastUpdated = Date.now;