Error handling in MomentumBuilder

[jezer07]

When using a Stream, we can add an error via its .addError(error) function. Then any StreamBuilder that is listening to it could get the error object via the AsyncSnapshot object.
That allows us to return a different widget to the builder function when any error occurs.

Is there something similar that we can do with MomentumBuilder?

I know we can send an event and just show a SnackBar instead. But in some cases we want to show an error widget to the screen itself.

Any thoughts?

Thanks!

[xamantra]

@jezer07
I created this library in mind that I don't need to use FutureBuilder and StreamBuilder. I want to handle everything from the controller and let MomentumBuilder display my state.

The official docs covered this part in this section: Working with Streams - Error Handling

Here's the sample code from the docs:

class ChatController extends MomentumController<ChatModel> {

  // ...

  @override
  void bootstrap() {
    // ...
    model.roomsSubscription.onError((error, stackTrace) {
      print(error);
      print(stackTrace);
    });
    // ...
  } 

  // ...
}

I think if you call .addError(error), the callback .onError(...) will react to it. So basically inside this callback, you can do anything like setting an error property in the model and display the error using MomentumBuilder.

[xamantra]

Closing for inactivity...