TypeError：urls.toObject不是函数Mongoose

如何解决TypeError：urls.toObject不是函数Mongoose

大家好，我想在我的代码中执行基本的对象函数，所以我需要猫鼬，并且它向我发送此错误，我不明白为什么：UnhandledPromiseRejectionWarning：TypeError：urls.toObject不是函数。它在get函数中，希望获得帮助。

const express = require("express");
const { v4: uuidv4 } = require("uuid");
const Url = require("../models/Url");
const mongoose = require("mongoose");
const HttpError = require("../models/http-errors");

const getTodo = async (req,res,next) => {
  let urls;
  try {
    urls = await Url.find({});
    res.json({ urls });
  } catch (err) {
    const error = new HttpError(
      "Something went wrong,could not find a Url.",500
    );
    return next(error);
  }
  res.json({ urls: urls.toObject({ getters: true }) });
};

const addTodo = async (req,next) => {
  const { content } = req.body;
  const createdPlace = new Url({
    content: content,enable: false,});
  // Sending it To Mongo
  try {
    await createdPlace.save();
  } catch (err) {
    const error = new HttpError("Creating Place fails mongo");
    return next(error);
  }

  res.sendStatus(200);
};


exports.getTodo = getTodo;
exports.addTodo = addTodo;

解决方法

URL是对象的列表，因此我需要对其进行映射才能执行toObject函数。

  res.json({
    url: url.map((url) => url.toObject({ getters: true })),});