create script to insert seed data into mongodb in node.js

Question

I'm using mongoose and node.js (express), and I wish to insert seed data using script. Like when I do node scripts/createNotifications.js I can insert a data into my db.

My code

//createNotifications.js
const mongoose = require('mongoose')
const Notification = require('../api/models/notificationModel')
mongoose.Promise = global.Promise

module.exports = (async () => {

    try {

        const new_notification = await new Notification({ 
            "userId" : mongoose.Types.ObjectId("5a3e76ce914e1d1bd854451d"),
            "msg" : "Something"
        }).save()

    } catch(e) {
        console.log('Error creating notifications. ', e)
    }
})()

When I run the code I don't see any data been inserted. I have my server started in port 3000, do I have to connect to mongodb too in this file? since this file has nothing to do with my express app, it's just a separated file.

where are you calling this method ? have you made connection with db ? — Muhammad Usman
– Muhammad Usman, Commented May 6, 2018 at 1:37
When you run what code? All that is here is a module declaration with an assigned IIFE. This code itself is not executable. I think really you don't actually mean to assign to the module.exports and are simply doing "rote copy" because you don't really know what that means. Also of course. No connection attempt at all — Neil Lunn
– Neil Lunn, Commented May 6, 2018 at 1:38
"Connection to the database". You need to call mongoose.connect() in order to do anything. The code here does nothing without that. — Neil Lunn
– Neil Lunn, Commented May 6, 2018 at 1:44

Muhammad Usman · Accepted Answer · 2018-05-06 01:55:18Z

1

If you want to see this module running make sure the following

Make sure you've made connection with the database like mongoose.connect('mongodb://IP/DBName')
What you've posted above is just a module definition. It won't execute on its own. You'll have to require this module in your mail file, the file you're running with node for example node server.js and call the method. Something like
```
var notification = require(path/to/createNotifications);
notification();
```

answered May 6, 2018 at 1:55

Muhammad Usman

10.1k26 silver badges41 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

create script to insert seed data into mongodb in node.js

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related