Routing problems using NodeJS and AngularJS - node.js

Question

I am building my first application using NodeJS & ExpressJS for the backend and AngularJS front end. I have all my front end routes working how I want, but I cannot figure out how to properly configure the Node backend so that when a specific URL is entered into the address bar, Node renders only the same Angular app every time.
For example, if I use About as a link to my about page in Angular, then the correct view will render and the address bar will show localhost:8080/about. However, if I just manually type in localhost:8080/about then Node responds with Cannot GET /about. Now I understand this is because my backend currently only handles the following:
var express = require('express');
var crypto = require('crypto');
var app = express();
app.set('views', __dirname + '/public');
app.engine('html', require('ejs').renderFile);
app.use(express.static(__dirname + '/public'));
app.get('/', function(req, res){
res.render('index.html');
});
// API
app.get('/api/sync', function(req, res){
// Here we generate a 32 byte string and make it the key
var num = Math.floor(Math.random()*100);
var key = crypto.createHash('md5').update(num.toString()).digest('hex');
key = key.slice(0, key.length/2);
console.log('Created key: ' + key);
res.send(key);
});
var server = app.listen(8080, function(){
console.log('Listening on port %d', server.address().port);
});
So what I want to do is make it so EVERY request to Node renders the same index.html page but then properly routes the view in Angular based on the URL. What is the best way to do this?

Answer 1

I just realized that using:
app.get('*', function(req, res){
res.render('index.html');
});
And placing this after all other routes I want to catch first will work.

Answer 2

Since I don't have enough reputation yet to just add a comment, it's worth noting that res.render() won't work if you're not using a server-side template rendering engine (as you are using EJS). You would instead want to use something like res.sendFile() if you were just serving a static HTML and Angular page with all the routing set up in Angular.
app.get( '*', function( req, res ) {
res.sendFile( __dirname + '/public/index.html' );
} );

Answer 3

The best way handle angular route in angular-app and backend route in backend.
Angular/Frontend:
sampleApp.config(['$routeProvider',
function($routeProvider) {
$routeProvider.
when('/', {
templateUrl: 'templates/home.html',
controller: 'MainController'
}).
when('/about', {
templateUrl: 'templates/about.html',
controller: 'AboutController'
}).
// >>> redirect other routes to
otherwise({
redirectTo: '/'
});
}]);
Backend:
For render static html you don't need app.get(...)
simple place index.html into:
public/index.html
and express serve it as html. Other not exists pages(routes) return 404 error and it is right.
In this case API fully separate and independent and angular fully single page app. Express serve static resources needed for angular.