Updating a field in MondoDB - node.js

Question

I am writing a multi-user online dictionary. I want to implement a leadership board, e.i. "score" attribute increases, as soon as a user adds a word. I have a rough idea on how to do it, and tried one solution, however it does not work. Could you please guide me?
Word API route
const express = require('express');
const router = express.Router();
const Word = require('../../models/Word');
const User = require('../../models/User');
const validateWordInput = require('../../validation/word');
const passport = require('passport');
// #route POST api/words
// #desc Add words to profile
// #access Private
router.post(
'/',
passport.authenticate('jwt', { session: false }),
(req, res) => {
const { errors, isValid } = validateWordInput(req.body);
// Check validation
if (!isValid) {
// Return any errors
return res.status(400).json(errors);
}
Word.find({}).then(word => {
if (
word.filter(
wrd =>
wrd.ugrWordCyr.toString().toLowerCase() ===
req.body.ugrWordCyr.toLowerCase()
).length !== 0
) {
return res
.status(404)
.json({ wordalreadyexists: 'Word already exists' });
} else {
const newWord = new Word({
user: req.user.id,
ugrWordCyr: req.body.ugrWordCyr,
rusTranslation: req.body.rusTranslation,
example: req.body.example,
exampleTranslation: req.body.exampleTranslation,
origin: req.body.origin,
sphere: req.body.sphere,
lexis: req.body.lexis,
grammar: req.body.grammar,
partOfSpeech: req.body.partOfSpeech,
style: req.body.style
});
newWord.save().then(word => res.json(word));
User.update(
{ _id: '5cf0cb78b3105d1ba8e30331' },
{ $inc: { score: 1 } }
);
}
});
}
);
User model
This is where a score attribute is located
const mongoose = require('mongoose');
const Schema = mongoose.Schema;
// Create schema
const userSchema = new Schema({
name: {
type: String,
required: true
},
email: {
type: String,
required: true
},
password: {
type: String,
required: true
},
score: {
type: Number,
default: 0
},
avatar: {
type: String
},
date: {
type: Date,
default: Date.now
}
});
module.exports = User = mongoose.model('users', userSchema);

Answer 1

After successfully saving the word, we should update the user count
To update the respective user's score you can do the following:
newWord.save().then((word) => {
//now update user model
User.findOne({ _id: req.user.id }) <-- or an id you would like
.then((foundUser) => {
foundUser.score = foundUser.score + 1
foundUser.save()
.then((savedUser) => {
res.json({ word, savedUser })
})
.catch((err) => {
return res.status(400).json({ error: "could not add score"})
})
})
.catch((err) => {
return res.status(400).json({ error: "could not find user"})
})
})