AngularJS: On route change start - Check if user has permission to proceed or redirect it to the Sign In page.

RouteChangeStart.js

app.run(function ($rootScope, $location, AuthenticationModel) {

  	// Register listener to watch route changes.
	$rootScope.$on('$routeChangeStart', function (event, next, current) {
		if (!AuthenticationModel.isSignedIn() && next.requireAuthentication === true) {
			$location.path('/signin');
		}
	});

});