Node.js 为什么我收到此错误：MissingSchemaError：架构尚未为模型&业务&注册

发布于11月10日

这是我收到的错误:"MissingSchemaError:尚未为模型"Business"注册架构."

我在用AstraDB矢量数据库.我做了一个函数来初始化Mongoose模型:

export const initMongooseBusinessModel = async () => {
    const Business = mongoose.model(
      "Business",
      new mongoose.Schema(
        {
          business_id: String,
          $vector: {
            type: [Number],
            validate: (vector) => vector && vector.length === 1536,
          },
        },
        {
          collectionOptions: {
            vector: {
              size: 1536,
              function: "cosine",
            },
          },
        },
      ),
    );
    await Business.init();
    console.log("complete")
};

我正try 在另一个文件的函数中使用该模型:

import mongoose from "mongoose"

export const addToAstraDB = async (url) => {
    try {
        const Business = mongoose.model("Business")
        const businessURL = url
        // Rest of the code goes here...

我收到了这个错误:

推荐答案

Val Karpov(Mongoose的创建者)最近发布了一篇关于建造RAG app using Mongoose and Astra DB for Vector Search的文章.事实上，查看Git repo behind Val's article，建议您创建一个名为Business.js的文件，如下所示:

'use strict';

const mongoose = require('../mongoose');

const businessSchema = new mongoose.Schema({
    business_id: String,
    $vector: [Number]
});

module.exports = mongoose.model('Business', businessSchema);

然后将其从您的其他文件中拉入，如下所示:

import mongoose from "mongoose"

export const addToAstraDB = async (url) => {
    try {
        const Business = require('./Business.js');
        const businessURL = url;
        // Rest of the code goes here...

尽管，在文章本身中，他似乎建议只在第二个(其他)文件中这样做:

const businessSchema = new mongoose.Schema({
    business_id: String,
    $vector: [Number]
});
const Business = mongoose.model('Business', businessSchema);

通读一下Val的article和repo，这应该会给你指明正确的方向.