mongodb: Database not showing up in show dbs after data is inserted - node.js

Question

I am following a YouTube tutorial from Jose Annunziato. I created my server.js and did all the required settings and configurations for my database connection. Now when I am posting something from the form to the server: it shows the data is sent to the server successfully but when I go to the mongo console to verify if the data is received and database is created or not. I run db it says test I run show dbs and there I can't see my new Database. I am not sure what the actual problem is because I did everything Jose said in the tutorial.
Server.js
var express = require('express');
var app = express();
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/blogfall2016');
var PostSchema = mongoose.Schema({
title: {type: String, required: true},
body: String,
tag: {type: String, enum:['POLITICS', 'ECONOMY', 'EDUCATION']},
posted: {type: Date, default: Date.now},
});
var PostModel = mongoose.model('PostModel', PostSchema)
// GET /style.css etc
app.use(express.static(__dirname + '/public'));
var bodyParser = require('body-parser');
app.use(bodyParser.urlencoded({ extended: true }));
app.post("/api/blogpost", CreatePost);
function CreatePost(req, res) {
var post = req.body;
console.log(post);
PostModel.create(post);
res.json(post);
}
app.listen(3000);

Answer 1

If your schema and data you want to insert are matched then it should work.
Try below code. instead of PostModel.create(post);
var express = require('express');
var app = express();
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
mongoose.connect('mongodb://127.0.0.1:27017/nnnnnn', function (err) {
if (!err) {
console.log('connection successful');
} else {
console.log(err)
}
});
var PostSchema = mongoose.Schema({
title: { type: String, required: true },
body: String,
tag: { type: String, enum: ['POLITICS', 'ECONOMY', 'EDUCATION'] },
posted: { type: Date, default: Date.now },
});
var PostModel = mongoose.model('PostModel', PostSchema)
// GET /style.css etc
app.use(express.static(__dirname + '/public'));
var bodyParser = require('body-parser');
app.use(bodyParser.urlencoded({ extended: true }));
app.post("/api/blogpost", CreatePost);
function CreatePost(req, res) {
var post = req.body;
console.log(post);
// static data
var post = {
title: 'asdfasdf',
body: 'asdfasdfasdfasdf',
tag: 'POLITICS',
posted: new Date()
}
var postModel = new PostModel(post);
postModel.save(function (err, data) {
if (err) {
console.log('Error', err);
} else {
console.log('data inserted');
}
});
res.json(post);
}
app.listen(3000);

Answer 2

Instead of below line
mongoose.connect('mongodb://localhost/blogfall2016');
Try this one to make sure that database created successfully first,
then do your operation
mongoose.connect(url, function(err, db) {
if (err) throw err;
console.log("Database created!");
db.close();
});