Why doesn't MongoDB save my properties

Question

I'm populating my DB with some dummy data where I'm trying to add a user. A user object is created but none of the properties are save... whats up?

app.get('/setup', function (req, res) {

    User.findOne({ name: "Nick" }, function (err, user) {

        if (user == undefined) {

            var nick = new User({
                name: "Nick",
            }).save();

            res.json({ "success": true, "msg": "user created" });
        } else {
            res.json({ "success": true, "msg": "user existed" });
        }
    });
});

calling this returns "user created". Here is my method to output all users:

app.get('/users', function(req, res) {

    User.find({}, function(err, user) {
        res.json(user);
    });
});

The output here is

[
  {
    "_id": "565772db5f6f2d1c25e999be",
    "__v": 0
  },
  {
    "_id": "5657734ba859fefc1dca77db",
    "__v": 0
  },
  {
    "_id": "5657738ba859fefc1dca77dc",
    "__v": 0
  },
  {
    "_id": "565774f1cf99a2b81fca1e7f",
    "__v": 0
  },
  {
    "_id": "565775f0cf99a2b81fca1e80",
    "__v": 0
  }
]

Where I've tried to add "Nick" a couple of times noe... any input? :D

My Mongoose model, located in its own Model.js file with other models:

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

// set up a mongoose model and pass it using module.exports
module.exports = mongoose.model('User', new Schema({ 
    name: String, 
    password: String, 
}));

Answer 1

Given you have a name in you user Schema, you also need to wait until your save() query is finished and then send a response:

app.get('/setup', function (req, res) {
    User.findOne({ name: "Nick" }, function (err, user) {
        if (err) {
          return res.json({ "success": false, "error": err });
        }

        if (user) {
          return res.json({ "success": true, "msg": "user existed" });
        }

        var nick = new User({ name: "Nick" });
        nick.save(function(err, userObj) {
           if (err) {
             return res.json({ "success": false, "error": err });
           }

           res.json({ "success": true, "msg": "user created" });
        });
    });
});

Answer 2

please try with this code :

app.get('/setup', function (req, res) {

    User.findOne({ name: "Nick" }, function (err, user) {

        if (!err && user) {
                res.json({ "success": true, "msg": "user existed" });

        } 
        else {

            var nick = new User({name: "Nick" });
            nick.save(function(err){
               if(!err)
                   res.json({ "success": true, "msg": "user created" });
            })

        }
    });
});