Mongoose can't find recent saved - node.js

Question

I am trying to save the IP address of the client who connects to my script.
However, while I am not getting any errors, when I check the collection it is empty.
index.js (main app)
const Listeners = require('mongoose').model('listeners');
const userData = {"ipaddress":ip}
const Listener = new Listeners(userData);
Listener.save(function (err, userData) {
if (err) return console.error(err);
});
Mongoose index.js
const mongoose = require('mongoose');
module.exports.connect = (uri) => {
mongoose.connect(uri, {useCreateIndex: true, useFindAndModify: false , useNewUrlParser: true, useUnifiedTopology: true });
// plug in the promise library:
mongoose.Promise = global.Promise;
mongoose.connection.on('open',function() {
console.log('Mongoose connected. what did you think');
});
mongoose.connection.on('error', (err) => {
console.error(`Mongoose connection error: ${err}`);
process.exit(1);
});
// load models
require('./listener');
};
My listener file
const mongoose = require('mongoose');
// define the User model schema
const ListenerSchema = new mongoose.Schema({
ipaddress: {
type: String,
// index: { unique: true }
},
station: String,
start_time:{
type: Date
},
end_time:{
type: Date
}
}, { collection: 'listeners'});
/**
* The pre-save hook method.
*/
ListenerSchema.pre('save', function saveHook(next) {
const Listener = this;
console.log(this)
});
module.exports = mongoose.model('listeners', ListenerSchema);
when I run it I get { _id: 5e2bf98549ae2d5d6da52475, ipaddress: '127.0.0.1' }
However when I open the mongodb collection I see nothing.
There seems to not be an error, but there must be?

Answer 1

💡 The only one reason why you can't save your data into your collection it's because this code in your listener file.
👨‍🏫 Try to comment this code below 👇:
/**
* The pre-save hook method.
*/
ListenerSchema.pre('save', function saveHook(next) {
const Listener = this;
console.log(this)
});
👨‍🏫 or, the second option is add next function in there. So, your code will looks like this code below 👇:
/**
* The pre-save hook method.
*/
ListenerSchema.pre('save', function saveHook(next) {
const Listener = this;
console.log(this);
// add next function below
next();
});
And now, you can try again and I'm sure, you can see the collection in your mongodb.
I hope it's can help you 🙏.