Question

下面是运行以下查询时得到的响应

Order.find().then((find) => {
        res.json(find);
    });

[  
   {  
      "isPrime":false,
      "orderStatus":"Pending",
      "orderTotal":"27.98",
      "orderType":"x",
      "subOrderId":"x",
      "children":[  
         "5bd105dc1b85bc2faca27603",
         "5bd105dd1b85bc2faca2760b",
         "5bd105dd1b85bc2faca27613"
      ],
      "_id":"x",
      "deliveryDate":"x",
      "orderChannel":"xx",
      "orderDate":"xZ",
      "orderLabel":"NA",
      "shipDate":"x",
      "__v":0
   },

]

如何在同一查询中获得有关子项的信息，或者在其他查询中如何获得子项的信息？

Answer 1

使其与以下代码一起使用子级1到3是子级文档。也必须更改我的架构

来自

children:[{type:Schema.ObjectId, ref:"ONLINE_ORDER_ITEMS"} , {type:Schema.ObjectId, ref:"ONLINE_ORDER_CUSTOMERS"}, {type:Schema.ObjectId, ref:"ONLINE_ORDER_SHIPMENTS"}]

到

 children1:[{type:Schema.ObjectId, ref:"ONLINE_ORDER_ITEMS"}],
    children2:[{type:Schema.ObjectId, ref:"ONLINE_ORDER_CUSTOMERS"}],
    children3:[{type:Schema.ObjectId, ref:"ONLINE_ORDER_SHIPMENTS"}]



 Order.find({ 'orderStatus': typeFlag}).populate('children1').populate('children2').populate('children3').then((find) => {
        res.json(find);
    });

Mongo DB获取孩子信息

1 个答案: