[Bug] Deleting a referenced board results in a permanent CircularProgressIndicator.

[a-wallen]

Bug Description

If you add a referenced board to a page and delete the board, the page will have a permanent circular progress indicator.

How to Reproduce

1. Create a new board.
2. Reference the board inside of a page.
3. Delete the board that you created earlier.
4. Close the app.
5. Open the app.
6. Open the page where you added the referenced board. There will be a circular progress indicator that you cannot remove.

Expected Behavior

The referenced board should not show.

Operating System

Windows 10

AppFlowy Version(s)

main

Screenshots

Additional Context

No response

[ThePrimeJnr]

I have reproduced this bug, and would like this task to be assigned to me.

[ThePrimeJnr]

just checked and the bug doesn't only exist with boards but with grids as well

[a-wallen]

@DestinedCodes, thank you!

[ThePrimeJnr]

I just began working on it. I'll keep this space posted on my progress. I am applying for octernship, so an issue with the label "good first issue for devs" would be great.😊😊😊

[a-wallen]

I suspect the answer is in built_in_page_widget.dart

  @override
  Widget build(BuildContext context) {
    return FutureBuilder<dartz.Either<ViewPB, FlowyError>>(
      builder: (context, snapshot) {
        if (snapshot.hasData) {
          final board = snapshot.data?.getLeftOrNull<ViewPB>();
          if (board != null) {
            return _build(context, board);
          }
        }
        return const Center(
          child: CircularProgressIndicator(),
        );
      },
      future: AppBackendService().getView(appID, gridID),
    );
  }

[ThePrimeJnr]

I have fixed the bug. please review😊. It was interesting working on this, but it wasn't really easy to build the app on my laptop. (I had to do more debugging on my laptop than I had to fix the code 😂)

[annieappflowy]

Fixed