使用猫鼬将对象数组添加到子文档

Posted 2023-03-11

【中文标题】使用猫鼬将对象数组添加到子文档

【英文标题】：Adding An array of Objects to a subdocument using mongoose

【发布时间】：2021-09-08 11:49:30

【问题描述】：

我正在使用 mongoose 在 mongoDB 中添加一组对象作为子文档。我无法遍历数组来保存它。

以下是请求数据：

"order" : 
  [
    "price": "50",
    "quantity" : "3",
    "vegId": "60c8b471e12c801e54b7ee59",
    "vegName": "Tomato"
  ,
  
    "price": "50",
    "quantity" : "3",
    "vegId": "60c8b471e12c841e54b7ee59",
    "vegName": "Onion"
  ],
  "userId" : "60cb597f1edc34385060c288",
  "orderTotal":"350",
  "createdOn" : "21-6-2021"

这是我的控制器：

exports.confirmOrder = (req, res, next) => 
    // console.log(req.body);
    // res.status(201).json(
    //     message: " Message Going"
    // )
    const orderData = req.body.order;
    console.log(orderData);


    const order = new Orders(
        userId: req.body.userId,
        orderTotal: req.body.orderTotal,
        vegetables: [
            vegId: orderData[0].vegId,
            quantity: orderData[0].quantity,
            price: orderData[0].price,
            vegName: orderData[0].vegName
        ]
    );
    order.save().then(result => 
        res.status(201).json(
            message: "Oder Confirmed"
        );
    ).catch(error => 
        console.log(error);
        res.status(501).json(
            message: " An Error has occured"
        )
    );
;

如何遍历蔬菜中的请求数据。

【问题讨论】：

只需赋值vegetables: orderData，无需循环迭代。

谢谢哥们..很有帮助..

【参考方案1】：

您不需要迭代。基本上，您需要分配蔬菜数据，如下所示：

const data = 
    "order": [
        
            "price": "50",
            "quantity": "3",
            "vegId": "60c8b471e12c801e54b7ee59",
            "vegName": "Tomato"
        ,
        
            "price": "50",
            "quantity": "3",
            "vegId": "60c8b471e12c841e54b7ee59",
            "vegName": "Onion"
        
    ],
    "userId": "60cb597f1edc34385060c288",
    "orderTotal": "350",
    "createdOn": "21-6-2021"


    const order = new Orders(
        userId: req.body.userId,
        orderTotal: req.body.orderTotal,
        vegetables: data.order //Give your vegetables data here
    );

【讨论】：

谢谢哥们...很有帮助

【参考方案2】：

我想出了这样的事情：-

exports.confirmOrder = (req, res, next) =>  
const orderData= req.body.order;
const data = [];
orderData.forEach((orders)=>
    data.push(
        vegId:orders.vegId,
        quantity: orders.quantity,
        price: orders.price,
        vegName:orders.vegName
    );
);

const order = new Orders(
    userId: req.body.userId,
    orderTotal: req.body.orderTotal,
    vegetables: data
);
order.save().then(result =>
    res.status(201).json(
        message: "Oder Confirmed"
    );
).catch(error => 
    console.log(error);
    res.status(501).json(
        message:" An Error has occured"
    )
);

;