mongoose.findById does not return anything and request keep hanging

system specifications

• node v 6.1.0
• npm v 3.8.6
• “mongodb”: “^2.1.18”
• “mongoose”: “^4.4.16”
• ubuntu 16.04

created schema and added one entry by terminal using db.locations.save({...}); get the id of that entry and tried to use in my api but does not return anything when hitting api/locations/:locationid in browser

app_api//models/db.js

var mongoose  = require( 'mongoose' );    
var mongoURI = 'mongodb://localhost/loc8r';    
var mongoDB = mongoose.createConnection(mongoURI);

mongoDB.on('connected', function (){
    console.log('mongoose connected to ' + mongoURI);
});

require('./locations');

app_api/models/locations.js

var mongoose  = require( 'mongoose' );
var Schema =  mongoose.Schema;
var locationSchema = new Schema({
    name: {type: String, required: true},
    address: String,
    rating: {type: Number, "default": 0, min: 0, max: 5},
    facilities: [String]
});

mongoose.model('Location', locationSchema);

/app_api/router/index.js

var express = require('express');
var router = express.Router();
var ctrlLocations = require('../controllers/locations');

/* Locations pages */
router.get('/locations/:locationid', ctrlLocations.locationsReadOne);

app_api/controllers/locations.js

var mongoose  = require( 'mongoose' );
var location = mongoose.model('Location');

module.exports.locationsReadOne =  function (req, res) {
    if(req.params && req.params.locationid) {
        var _id = mongoose.Types.ObjectId(req.params.locationid);
        console.log(mongoose.Types.ObjectId.isValid(req.params.locationid)); // return true
        location
            .findById(req.params.locationid)
            .exec(function(err, location) {
                if (err) return res.status(500).send(err);
                if (location) return res.status(200).json(location);
                return res.status(404).json({"message":"locationid not found"});
            });
    } else {
         return res.status(200).json({"message": "no location id in request"});
    }
}

also tried with findById(mongoose.Types.ObjectId(req.params.id) find() and findOne({"_id":_id) but no results

Is there any bug in latest mongoose?

[nasr18]

mongoose working fine for me.

[nasr18]

your codes are very much complicated. why dont you make it short and simple? Your are using MEAN right???