Hi! 

@timgthomas 

Scenario 

// models/item.js export default Ember.Object.extend({ actions: { save() { this.set('savedAt', new Date()); } } }); // components/show-item.js export default Ember.Component.extend({ itemSaved: function() { // ... }.observes('item.savedAt') }); 

”Data Down, Actions Up“ 

Ember.Evented 

// models/item.js export default Ember.Object.extend(Ember.Evented, { actions: { save() { this.trigger('saved'); } } }); // components/show-item.js export default Ember.Component.extend({ init() { this._super(); this.get('item').on('saved', this.itemSaved); } }); 

// controllers/list.js export default Ember.Controller.extend(Ember.Evented, { actions: { save() { this.trigger('saved'); } } }); // controllers/item.js export default Ember.Controller.extend({ init() { this._super(); this.get('controllers.list').on('saved', () => {}); } }); 

Route Hierarchy Gotcha! 

let controller = this.get('controllers.foo'); controller.trigger('foo'); controller.trigger('foo', 'bar'); controller.on('foo', () => {}); controller.off('foo', () => {}); controller.one('foo', () => {}); controller.has('foo'); 

bit.ly/ember-evented 

Thanks!