使用 mongoose 检索数组中的对象信息

Question

我正在制作 API Rest with node, express, typescript 和 mongoose。我有一个方法 GET return 这个结果：

{
"success": true,
"status": 200,
"message": "categories listed",
"data": [
    {
        "_id": "612650e55fe1ce0de138e2af",
        "products": [
            {
                "_id": "612650e55fe1ce0de138e2b0",
                "productID": {
                    "reviews": [
                        "611e61ba8cb43f7454787ebb",
                        "611e62008cb43f7454787ebc"
                    ],
                    "_id": "610b18f3e2244a187b36f2d7",
                    "title": "PS4",
                    "description": "La mejor consola del mercado del mundo, mundial",
                    "photo": "https://amazon-clone-jparrot.s3.amazonaws.com/1628123519052",
                    "price": 400,
                    "stockQuantity": 23,
                    "__v": 0,
                    "category": "60fc6454b68717acc239cc6a",
                    "owner": "610b9ed8763da4308223aae0",
                    "averageRating": null,
                    "id": "610b18f3e2244a187b36f2d7"
                },
                "quantity": 1,
                "price": 400
            }
        ],
        "owner": {
            "_id": "611d2d39dfcc705972c1ccb8",
            "name": "Jaume",
            "email": "jaumeparrot2@gmail.com",
            "password": "a$Rv9Rzrff6578feCdDjyeKuarKCSHYRqKp5n5wTi2IWtcLBOupvPgu",
            "__v": 0,
            "address": "611e9ccdf47c7a7a9cb1d5d9"
        },
        "estimatedDelivery": "Wednesday September 1st",
        "__v": 0
    }
]

}

问题是我需要检索对象“owner”，也就是说，我需要恢复这个json:

{
"success": true,
"status": 200,
"message": "categories listed",
"data": [
    {
        "_id": "612650e55fe1ce0de138e2af",
        "products": [
            {
                "_id": "612650e55fe1ce0de138e2b0",
                "productID": {
                    "reviews": [
                        "611e61ba8cb43f7454787ebb",
                        "611e62008cb43f7454787ebc"
                    ],
                    "_id": "610b18f3e2244a187b36f2d7",
                    "title": "PS4",
                    "description": "La mejor consola del mercado del mundo, mundial",
                    "photo": "https://amazon-clone-jparrot.s3.amazonaws.com/1628123519052",
                    "price": 400,
                    "stockQuantity": 23,
                    "__v": 0,
                    "category": "60fc6454b68717acc239cc6a",
                    "owner": {
                      "_id": "611d2d39dfcc705972c1ccb8",
                      "name": "Jaume",
                      "about": "My na is Jaume",
                      "__v": 0
                    },
                    "averageRating": null,
                    "id": "610b18f3e2244a187b36f2d7"
                },
                "quantity": 1,
                "price": 400
            }
        ],
        "owner": {
            "_id": "611d2d39dfcc705972c1ccb8",
            "name": "Jaume",
            "email": "jaumeparrot2@gmail.com",
            "password": "a$Rv9Rzrff6578feCdDjyeKuarKCSHYRqKp5n5wTi2IWtcLBOupvPgu",
            "__v": 0,
            "address": "611e9ccdf47c7a7a9cb1d5d9"
        },
        "estimatedDelivery": "Wednesday September 1st",
        "__v": 0
    }
]

}

为了生成这个 JSON，我使用了这个方法： https://github.com/jparrot92/amazon-clone-back/blob/master/src/controllers/order.ts

Answer 1

要检索您应该使用 data.owner。这将提供 owner 详细信息作为对象。

Answer 2

这是解决方案：

    const products = await Order.find({ owner: req.user._id })
  .populate('owner')
  .populate({
    path: 'products.productID',
    populate: {
      path: 'owner',
      model: 'Owner',
    },
  })
  .exec();

使用 mongoose 检索数组中的对象信息

Retrieve object information within an array with mongoose

mongoose

node.js

express

typescript

mongoose-populate