Routing and constructors in Angular Dart

Question

Not sure if this is a bug or not. When using a RouteProvider, the code within a controller constructor runs every time the route changes. So, in the following example, I call fetchData() to load the initial data that is loaded in a view.

@NgController(
    selector: '[my-controller]',
    publishAs: 'ctrl'
)
class MyController implements NgDetachAware {
  ...

  MyController(RouteProvider router) {
    linkId = router.parameters['linkId'];
    route = router.route.newHandle();
    fetchData();
  }
}

But anytime I navigate to a route, the code in the constructor executes, and the data gets fetched.

Is this a bug? If not, what is the correct way to set values when the view loads?

Yup, this is expected. Your controllers get destructed and constructed every time the route (and implicitly the associated controller) changes. Store your data in a service. Those are persistent. — Sergiu Paraschiv

pavelgj pavelgj · Accepted Answer · 2014-02-06T19:21:10

If your controller is used inside the view then that view is destroyed and re-created every time route is re-entered or parameters change, so new instance of the controller is created.

Routing and constructors in Angular Dart

1 Answers