Routing with Page.js + Polymer

routing.html

<iron-pages selected="[[selected]]">
  <home-page name="home"></home-page>
  <contacts-page name="contacts"></contacts-page>
  <admin-page name="admin"></admin-page>
</iron-pages>

<script>
// ...Polymer boilerplate
  {
    properties: {
      selected: String,
      value: function() { return 'home' }
    }
page('/', (ctx) => this.selected = 'home' );
page('/contacts', (ctx) => this.selected = 'contacts' );
page('/admin/*', checkAuth, () => this.selected = 'admin' );

function checkAuth(ctx, next) {
  if(userIsAdmin) next(true)
  else page.redirect('/unauthorized')
}
</script>