var User = Backbone.Model.extend({
});

var AppView = Backbone.HandlebarsView.extend({
  template: '<h1>Hello</h1>{{view "HelloView" model=this}}'
});

var HelloView = Backbone.HandlebarsView.extend({
  template: 'Hello {{name}}'
});

var app = new AppView({model: new User({name: 'Loïc'})});
app.render().$el.appendTo('#app');