app.js

// import variables
var express = require("express");
var app = express();
var port = 3000;

// body-parser variables
var bodyParser = require("body-parser");
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
// this kind of body parser shoudn't be used anymore. it's going to be deppreciated

// mogodb variables
var mongoose = require("mongoose");
var nameSchema = new mongoose.Schema({
    firstName: String,
    lastName: String
});
var User = mongoose.model("User", nameSchema);
mongoose.Promise = global.Promise;
mongoose.connect("mongodb://localhost:27017/node-demo");


app.get("/", (req, res) => { 
    res.sendFile(__dirname + "/index.html") 
});

app.post("/addname", (req, res) => {
    var myData = new User(req.body);
    myData.save()
    .then(item =>{
        res.send("item saved to database");
    })
    .catch(err =>{
        res.status(400).send("unable to save to database");
    });
});

app.listen(port, ()=> {console.log("Server listening on port " + port)});