Nodejs mongodb don't woking on server - node.js

Question

On local, I installed NodeJS 9.2 and MongoDB 3.4
I using MongoDB Native Node Driver 3.0.4
My code with database
const mongo = require('mongodb').MongoClient;
const mongoose = require('mongoose');
mongo.connect('mongodb://localhost:27017/my_database', function(err, client){
console.log(err);
if (!err){
var database = client.db('my_database');
database.collection('users').find({}).toArray(function(err, docs){
console.log(docs);
});
}
});
Result null for error and array users in collection
So, on server centos 7 installed nodejs 8.2, Result null for error and empty array for docs
How does it work?

Answer 1

Connection
const mongoose = require('mongoose');
const URL = "mongodb://user:pass#mongo:27017/database?authSource=admin";
mongoose.connect(URL, {"server":{"auto_reconnect":true}});
var db = mongoose.connection;
db.on('error', function(err) {
console.error('Error in MongoDB connection: ' + err);
});
db.on('connected', function() {
console.log('Connected to MongoDB');
});
Model
You create a schema that represents a collection in your db
const mongoose = require('mongoose');
const Schema = mongoose.Schema;
const MyModel = Schema({
foo: String
}, { collection: 'mycollection' });
module.exports = mongoose.model('MyModel', MyModelSchema);
Controller
You use this schema to execute requests to that collection
const MyModel = require('../models/mymodel');
function myFunction(req, res) {
MyModel.find({}).exec(function(err, result){
if(!result) return res.status(404).send();
var array = [];
result.map(function(data){
array.push(data.foo);
});
res.status(200).send({"mydata": array});
});
}
module.exports = {
myFunction
};