这是我的类别架构，我在其中嵌套了nestedCategorySchema，并且希望在其他集合中引用this的此ObjectId
'

const mongoose = require("mongoose");

const { Schema } = mongoose;

const nestedCategorySchema = new Schema({
  name: {
    type: Schema.Types.ObjectId,
  },
});

const categorySchema = new Schema(
  {
    clientname: {
      type: Schema.Types.String,
    },
    categoryOne: {
      type: [nestedCategorySchema],
      default: [],
    },
    categoryTwo: {
      type: [nestedCategorySchema],
      default: [],
    },
  },
  {
    timestamps: true,
  }
);

exports.default = mongoose.model("category", categorySchema);

mongoose.model("category").collection.createIndex({
  clientname: 1,
});

'
在另一个集合中，我希望引用嵌套的categoryOneObjectId
'

const mongoose = require("mongoose");

const { Schema } = mongoose;

const prodSchema = new Schema(
  {
    categories: [
      {
        _id: false,
        clientname: {
          type: String,
        },
**        categoryLevelOne: {
          type: mongoose.Schema.Types.ObjectId,
          ref: "category.categoryOne",
        },**
      },
    ],
  },
  {
    timestamps: true,
  }
);

'
在prodSchema中，我希望引用嵌套的categoryOne