查找嵌套文档并相应地更新它

Posted 2023-03-11

【中文标题】查找嵌套文档并相应地更新它

【英文标题】：Finding a nested document and updating it accordingly

【发布时间】：2020-12-26 20:39:40

【问题描述】：

稍微更新了方法，还是不行，但我认为我走在正确的道路上......

const condition =  'assets._id': assetId ;
    const updateData = 
      assetName: editAssetData.assetName,
      assetQuantity: editAssetData.assetQuantity,
      singleQuantityPrice: editAssetData.singleQuantityPrice,
      totalQuantityPrice: editAssetData.totalQuantityPrice,
    ;
    const options =  new: true ;

    const newAsset = await Catalog.findOneAndUpdate(condition,  $set: updateData , options).exec();

我正在尝试创建用于更新单个文档的路由。

这里是catalogModel，我想根据收到的assetId更新相应的资产...

const catalogSchema = new Schema(
  assetType:  type: String, required: true ,
  description:  type: String, required: false ,
  creator:  type: Schema.Types.ObjectID, required: true, ref: 'User' ,
  assets: [
    assetName:  type: String, required: false ,
    assetQuantity:  type: Number, required: false ,
    singleQuantityPrice:  type: Number, required: false ,
    totalQuantityPrice:  type: Number, required: false ,
  ],
);

这是我的 editAssetData 对象的样子：

  assetName: 'goldis',
  assetQuantity: '1',
  singleQuantityPrice: '1',
  totalQuantityPrice: '1'

这是我的查询，它不起作用。我尝试了其他方法，而不是更新单行，而是用 editassetData 替换了资产中的所有文档。

 const 
    assetId,
    editAssetData,
   = req.body;

    const newAsset = await Catalog.updateOne(
       'assets._id': assetId ,
      
        $set: 
          assetName: editAssetData.assetName,
          assetQuantity: editAssetData.assetQuantity,
          singleQuantityPrice: editAssetData.singleQuantityPrice,
          totalQuantityPrice: editAssetData.totalQuantityPrice,
        ,
      ,
    );

    const asset = await newAsset.save();

我得到的响应是： ok: 0, n: 0, nModified: 0 ... 表示没有找到和修改任何内容。

我尝试查看我的病情是否有任何发现，但没有。我不明白为什么不...

这是一个文档的样子，例如：

_id: 'the catalog object id'
assetType: "gold"
description: "test gold assets"
creator: 'the user object id'
assets: [ _id: 'the asset object id', assetName: "goldisnice", assetQuantity: 1, singleQuantityPrice: 1200, totalQuantityPrice: 1200  ]

【问题讨论】：

你的需求可以写成纯Mongo DB查询吗？

@Mallik 是的，它可以

@Gabriel 你试过 'assets._id': mongoose.types.ObjectId(assetId) 吗？

@mickl 是的，我也试过了

@Gabriel，我在答案部分添加了一个 mongo DB 查询。希望这对你有用。

【参考方案1】：

//MongoDB query run from mongo shell on windows10
//sample data for catalog Schema collection
> db.catalogSchema.find().pretty();

        "_id" : ObjectId("5f5791b0636fe5b2e945cd48"),
        "assetType" : "Mouse",
        "description" : "Logitech Mouse 120v with laser",
        "creator" : "johnd",
        "assets" : [
                
                        "assetName" : "logitech1",
                        "assetQuantity" : 12,
                        "singleQuantityPrice" : 100,
                        "totalQuantityPrice" : 1200
                ,
                
                        "assetName" : "microsoft1",
                        "assetQuantity" : 15,
                        "singleQuantityPrice" : 200,
                        "totalQuantityPrice" : 3000
                ,
                
                        "assetName" : "goldis",
                        "assetQuantity" : "11",
                        "singleQuantityPrice" : "1",
                        "totalQuantityPrice" : "1"
                
        ]

//update , need to use $ to access array elements
> db.catalogSchema.updateOne(      "assets.assetName":"goldis",      $set:"assets.$.assetQuantity":"22"      );
 "acknowledged" : true, "matchedCount" : 1, "modifiedCount" : 1 
> db.catalogSchema.find().pretty();

        "_id" : ObjectId("5f5791b0636fe5b2e945cd48"),
        "assetType" : "Mouse",
        "description" : "Logitech Mouse 120v with laser",
        "creator" : "johnd",
        "assets" : [
                
                        "assetName" : "logitech1",
                        "assetQuantity" : 12,
                        "singleQuantityPrice" : 100,
                        "totalQuantityPrice" : 1200
                ,
                
                        "assetName" : "microsoft1",
                        "assetQuantity" : 15,
                        "singleQuantityPrice" : 200,
                        "totalQuantityPrice" : 3000
                ,
                
                        "assetName" : "goldis",
                        "assetQuantity" : "22",
                        "singleQuantityPrice" : "1",
                        "totalQuantityPrice" : "1"
                
        ]

//update , need to use $ to access array elements(another collection field as example)
> db.catalogSchema.updateOne(      "assets.assetName":"goldis",      $set:"assets.$.assetName":"goldis New"      );
 "acknowledged" : true, "matchedCount" : 1, "modifiedCount" : 1 
> db.catalogSchema.find().pretty();

        "_id" : ObjectId("5f5791b0636fe5b2e945cd48"),
        "assetType" : "Mouse",
        "description" : "Logitech Mouse 120v with laser",
        "creator" : "johnd",
        "assets" : [
                
                        "assetName" : "logitech1",
                        "assetQuantity" : 12,
                        "singleQuantityPrice" : 100,
                        "totalQuantityPrice" : 1200
                ,
                
                        "assetName" : "microsoft1",
                        "assetQuantity" : 15,
                        "singleQuantityPrice" : 200,
                        "totalQuantityPrice" : 3000
                ,
                
                        "assetName" : "goldis New",
                        "assetQuantity" : "22",
                        "singleQuantityPrice" : "1",
                        "totalQuantityPrice" : "1"
                
        ]

>

【讨论】：

谢谢，我会试试你的方法，但我真的看不出你和我的区别。我稍微更新了我的方法，现在看起来像这样：...我已经更新了我的帖子