statechart.js

        addButtonPressed: function(element, productName) {
          var product = DC.store.createRecord(DC.Product, { name: productName });
          this._observer = this.addStatechartObserver(product, 'status', 'statusChanged');
          product.commitRecord();
        },
        statusChanged: function(target, key, revision) {
          if (SC.kindOf(target, DC.Product) && key === 'status') {
            if (target.get(key) === SC.Record.READY_CLEAN) this.gotoState('messages');
            // else ignore any other status changes
          }
        },