CODEWITHSUNDEEP
javascriptnode.jsmongodbexpress
sasuri
sasuri

Reputation: 992

How to handle error in mongoose in Node.js app

I'm developing a node.js app with express and mongoDb and mongoose. The app saves the user in the code below with no problem, but in this code it always console error even if the process is success, and the user is saved.

I'm trying to make flash messages and validation but I can't go ahead with this problem.

Also, I'm not sure if I'm using the right post method or not(should I use res.status(500).send('error')) inside the post? 

 newUser.save().then(function (error) {
  if (error) {
    console.log('error') // always prints this 
  } else {
    console.log('success')
  }
})

the full code 

var User = require('../models/User')
var router = require('express').Router()

 router.route('/user/signup')
.get(function (request, response) {
  // render the form
  response.render('user/signup')
 })
 .post(function (request, response) {
  var username = request.body.name
  var password = request.body.password
  var newUser = new User({
  name: username,
  password: password
  })
  newUser.save().then(function (error) {
    if (error) {
    console.log('error')
  } else {
    console.log('success')
  }
 })
 response.redirect('/')
 })

Upvotes: 1

Views: 1368

Answers (1)

vapurrmaid
vapurrmaid

Reputation: 2307

I think you want to pass the function directly to save() as the callback 

newUser.save(function (err, user) {
      if (err) ..
    })

With the approach you're currently taking, I think you'll want to use catch

newUser.save().then(function (user) }})
   .catch((err) => ...);

Source: mongoose docs

Upvotes: 1

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