Unhandledpromiserejectionwarning - Registration Error with Mongodb and Node.js

Question

I’m trying to register users on Mongodb.

The environment is windws 8.1 and I am also using Mongoose, express and Xios in the backend and Insomnia to test the registration. When I try to register Node.js returns these errors to me:

(node:252) UnhandledPromiseRejectionWarning: MongoError: location object expected, location array not in correct format
    at Function.create (C:\Users\User\Desktop\SemanaOministack\backend\node_modules\mongodb\lib\core\error.js:44:12)
    at toError (C:\Users\User\Desktop\SemanaOministack\backend\node_modules\mongodb\lib\utils.js:150:22)
    at C:\Users\User\Desktop\SemanaOministack\backend\node_modules\mongodb\lib\operations\common_functions.js:265:39
    at handler (C:\Users\User\Desktop\SemanaOministack\backend\node_modules\mongodb\lib\core\sdam\topology.js:971:24)
    at C:\Users\User\Desktop\SemanaOministack\backend\node_modules\mongodb\lib\core\sdam\server.js:496:5
    at C:\Users\User\Desktop\SemanaOministack\backend\node_modules\mongodb\lib\core\connection\pool.js:420:18
    at processTicksAndRejections (internal/process/task_queues.js:76:11)
(node:252) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:252) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

The code looks like this. Routes.js file:

const { Router } = require('express');
const axios = require('axios');
const Dev = require('./models/Dev');

const routes = Router();

routes.post('/devs', async(request, response) => {
  const {
    github_username,
    techs,
    latitude,
    longitude
  } = request.body;

  const apiResponse = await axios.get(`https://api.github.com/users/${github_username}`);

  const {
    name = login, avatar_url, bio
  } = apiResponse.data;

  const techsArray = techs.split(',').map(tech => tech.trim());

  const location = {
    type: 'Point',
    coordinates: [longitude, latitude],
  };

  const dev = await Dev.create({
    github_username,
    name,
    avatar_url,
    bio,
    techs: techsArray,
    location,
  });

  return response.json(dev);
});

module.exports = routes;

Dev.js file:

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

const DevSchema = new mongoose.Schema({
    name: String,
    github_username: String,
    bio: String,
    avatar_url: String,
    techs: [String],
    location: {
        type: PointSchema,
        index: '2dsphere',
    }
});

module.exports = mongoose.model('Dev', DevSchema);

index.js file:

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

const app = express();

mongoose.connect('mongodb+srv://omnistack:[email protected]/week10?retryWrites=true&w=majority', {
    useNewUrlParser: true,
    useUnifiedTopology: true,
    useCreateIndex: true
});

app.use(express.json());

app.use(routes);

app.listen(3333);

Pointschema.js file:

const mongoose = require('mongoose');

const PointSchema = new mongoose.Schema({
    type: {
        type: String,
        enum: ['Point'],
        required: true,
    },
    coordinates: {
        type: [Number],
        required: true,
    },
});

module.exports = PointSchema;

I tried to look at the documentation but I could not handle the errors. IP is released. I put there in the Mongo 0.0.0.0. The register worked normally until I added "Location" on line 27, file Routes.js. If you comment on the line, it runs normally. The problem is there, but I have no idea what I have to do to fix it.

Answer 1

The error is in the first line:

Location Object expected, Location array not in correct format

Change your model for test purposes only:

const DevSchema = new mongoose.Schema({
    name: String,
    github_username: String,
    bio: String,
    avatar_url: String,
    techs: [String],
    location: [Number]
});

If it works, it’s your coordinate model that needs to be revised.

Here has a tutorial on how to do.

Answer 2

Hello I had the same problem, the error and I managed to solve.

The problem is in Mongodb, you need to access the database from the web, and in part from right, will have 3 Dexes. Let only the Dexes ID that is the default and the other called location_2dsphere what’s not that can erase.