ZCCADCDEDB567ABAE643E15DCF0974E503Z 和 TypeScript - 返回的 _id 格式奇怪

Question

從 TypeScript 查詢 MongoDB（通過 Mongoose）時有一些奇怪的響應。

有這兩個接口：

import { Document, Types } from "mongoose";

export interface IModule extends Document {
  _id: Types.ObjectId;
  name: string;
  owner: number;
  isMain: boolean;
  url: string;
}

export interface IProject extends Document {
  _id: Types.ObjectId;
  name: string;
  description: string;
  owner: number;
  modules: IModule[];
}

這些是 Mongoose 模式和模型：

import { IModule, IProject } from "../interfaces/mongo";

export const ModuleSchema = new mongoose.Schema({
  name: { type: String, required: true },
  owner: { type: String, required: false },
  isMain: { type: Boolean, required: true },
  url: { type: String, required: false },
});

export const ModuleModel = mongoose.model<IModule>("Module", ModuleSchema);

export const ProjectSchema = new mongoose.Schema({
  name: { type: String, required: true },
  description: { type: String, required: false },
  owner: { type: Number, required: true },
  modules: [ModuleSchema],
});

export const ProjectModel = mongoose.model<IProject>("Project", ProjectSchema);

使用model.find返回owner等於 13 的所有文檔

await ProjectModel.find({ owner: 13 })
  .select("-__v")
  .lean()
  .exec();

這就是我在 Postman 中得到的響應。 不知道為什么_id又回到了這種格式。 我試圖在界面中更改_id的類型，但它總是像這樣返回

    {
        "_id": {
            "_bsontype": "ObjectID",
            "id": {
                "type": "Buffer",
                "data": [
                    96,
                    173,
                    237,
                    68,
                    72,
                    243,
                    160,
                    124,
                    92,
                    93,
                    142,
                    242
                ]
            }
        },
        "name": "whatever-repo",
        "description": "",
        "owner": 13,
        "modules": [
            {
                "_id": {
                    "_bsontype": "ObjectID",
                    "id": {
                        "type": "Buffer",
                        "data": [
                            96,
                            174,
                            108,
                            154,
                            204,
                            174,
                            125,
                            138,
                            184,
                            56,
                            58,
                            227
                        ]
                    }
                },
                "owner": "13",
                "isMain": false,
                "name": "whatever-repo-module4",
                "url": "test/whatever-repo-module4"
            },
...

Answer 1

TypeScript 中的interface未在運行時檢查 - 它僅在編譯時檢查。 因此，您不能簡單地直接在interface中更改運行時結構。

對於這種情況，您可以使用.map(val => val.id =...)如果它返回一個數組，或者.id =...如果它只返回一個 object。 為確保不修改原始 object，最好先深拷貝您的 object。