How to insert a doc into mongodb using mongoose and get the generated id?

Question

I'm using mongoose to operate mongodb. Now, for testing, I want to insert some data into mongodb by native connection.

But here my main question is how to get the generated id after inserting?

I tried:

var mongoose = require('mongoose');

mongoose.connect('mongo://localhost/shuzu_test');

var conn = mongoose.connection;

var user = {

    a: 'abc'

};

conn.collection('aaa').insert(user);

console.log('User:');

console.log(user);

But it prints:

{ a: 'abc' }

There is no _id field.

Answer 1

You can simply generate id by yourself by calling ObjectID function and send it to the database. You can also create all ids in the app and then just insert all your documents.

var ObjectID = require('mongodb').ObjectID;

var user = {

  a: 'abc',

  _id: new ObjectID()

};

conn.collection('CollectionName').insert(user);