URL Shortener Microservice - writing the very first data in my mongo db

Got my URL Shortener Microservice maybe about half way there, and I can remote connect from Node to my mongo db in mLab via Mongoose.

But before I start writing code that reads and writes to the mongo db on mLab database, don’t I need to create a data model first in the database in mLab? Right now the db simply exists and there are no collections in it yet.

If so, don’t I need to do that directly in mLab via the mongo shell? Or is there something else I should be doing first?

BTW, here is my code so far:

var express = require('express')
var app = express()
var path = require('path');
var port = process.env.PORT || 8080;

app.get('/', (req, res, next) => res.sendFile(path.join(__dirname, '/index.html')));

app.set('port', (process.env.PORT || 5000));

app.get('/new/*', function(req, res) {
var shortenme = req.params[0];
console.log("you said " +shortenme);
 var amItrue = validateURL(shortenme);
if (amItrue){
  console.log("Yup, that's a url!"); // NEED TO WRITE "add me to db" function


app.get('/', function(req, res) {
  var kissmeorkillme = req.params[0];
  var amIinDB = validateURL(kissmeorkillme); // NEED TO WRITE "Am I in db?" function
  if (amIinDB){
 else{console.log("Whatever that is, it's not in our database!");};

function validateURL(textval) { 
  var urlregex = /^(https?|ftp):\/\/([a-zA-Z0-9.-]+(:[a-zA-Z0-9.&%$-]+)*@)*((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}|([a-zA-Z0-9-]+\.)*[a-zA-Z0-9-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{2}))(:[0-9]+)*(\/($|[a-zA-Z0-9.,?'\\+&%$#=~_-]+))*$/;
   return urlregex.test(textval);

function connectmongoviamongoose(shortenme){
                    var target = shortenme;
                    var mongoose = require('mongoose');

                    var options = { server: { socketOptions: { keepAlive: 300000, connectTimeoutMS: 30000 } }, 
                      replset: { socketOptions: { keepAlive: 300000, connectTimeoutMS : 30000 } } };       

                    var mongodbUri = 'mongodb://<dbuser>:<dbuserPword>@ds159988.mlab.com:59988/urlcntrctr';

                    mongoose.connect(mongodbUri, options);
                    var conn = mongoose.connection;             

                    conn.on('error', console.error.bind(console, 'connection error:'));  

                    conn.once('open', function() {
                      console.log("I think I am connected. ") 

 app.listen(app.get('port'), function() {  
  console.log('Node app is running on port', app.get('port'));

With mlab you just have to setup the collection name. If you have your mlab db name set, then just log in and click on the db name. Then you will see a button that says something like create new collection, simply click that and set the name. The data model will need to be setup in your code.

1 Like

Please excuse the late reply - work has been getting in the way of study lately.
Thank you for the response. I will try out your suggestion over the weekend.