TypeError: urls.toObject 不是 Mongoose 函数

Question

大家好，我想在我的代码中做一个基本的对象函数我需要猫鼬，它给我发送了这个错误，我不明白为什么：UnhandledPromiseRejectionWarning: TypeError: urls.toObject is not a function。在get函数中，希望得到帮助。

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, res, 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;

Answer 1

URL 是一个对象列表，所以我需要映射它以执行 toObject 函数。

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