Can't create a collection in MongoDB datatbase - node.js

Question

Using this code to create a collection on MongoDB database hosted on mlab. But somehow it does not seems to be working. Is there something I am missing in this code? .save() function does not seem to be firing at all. Can it be due to my schema?
var mongoose= require('mongoose');
var Schema= mongoose.Schema;
app.use(express.static(__dirname+'/views'));
app.use(express.static(path.join(__dirname, 'public')));
//connect to mongo db database
mongoose.connect('mongodb://blaa:blaa#ds127132.mlab.com:27132/vendor');
//vendor schema
var vendorSchema= new Schema({
name:String,
image: { data: Buffer, contentType: String },
vendortype:String,
location: {
type: [Number], // [<longitude>, <latitude>]
index: '2d' // create the geospatial index
},
contactinfo:String,
description:String
});
//creating a model for mongoDB database
var Vendor= mongoose.model('Vendor',vendorSchema);
//just putting a sample record data
var imgPath = 'public/images/background.jpg';
var one = Vendor({
name: 'Justin Motor Works',
vendortype: 'Automobile',
contactinfo:'6764563839',
location: {
type:[23.600800037384033,46.76758746952729]
},
image: {
data: fs.readFileSync(imgPath),
contentType: 'image/jpg'
},
description: 'Motor workshop'
}).
save(function(err){
if(err)
throw err;
else {
console.log('create record failed');
}
});

Answer 1

mongoose.connect is an asynchronous function, you need to put your code inside a callback or promise.then(function(){.
Try this:
mongoose.connect('mongodb://blaa:blaa#ds127132.mlab.com:27132/vendor', function(error) {
if (error)
//handle error
//Your code
});
Or this:
mongoose.connect('mongodb://blaa:blaa#ds127132.mlab.com:27132/vendor').then(
() => {
//Your code
},
err => {
//Your error handling
}
);
Notice the error handling, it's important to know what caused the error for future debugging.
Also change the JSON structure of location when you are saving it as #NeilLunn said in the comments to something like this:
location: [23.600800037384033,46.76758746952729],
type in mongoose means actually defining the type of the key, and not a nested type key.