Cannot watch / select inside go_router redirect

[EArminjon]

Describe the bug

======== Exception caught by foundation library ====================================================
The following assertion was thrown while dispatching notifications for GoRouteInformationProvider:
Tried to use `context.select` outside of the `build` method of a widget.

Any usage other than inside the `build` method of a widget are not supported.
'package:provider/src/inherited_provider.dart':
Failed assertion: line 266 pos 12: 'widget is LayoutBuilder || debugDoingBuild'

go router documentation :

/// If [BuildContext.dependOnInheritedWidgetOfExactType] is used during the
/// redirection (which is how `of` method is usually implemented), a
/// re-evaluation will be triggered if the [InheritedWidget] changes.
final GoRouterRedirect? redirect;

context.watch and context.select use dependOnInheritedWidgetOfExactType but an assert prevent them to be used inside go_router redirect.

If I edit provider code as bellow it works well, redirection are well re-evaluated as expected (it's maybe not the good solution, I just did it for demo purpose) :

To Reproduce

Call context.watch or context.select inside GoRouter route redirect callback.

Expected behavior
Context.watch or context.select should be callable inside GoRouter redirect.

[rrousselGit]

I cannot reasonably depend on go_router just for an assert.

So this would require removing the assert entirely, which I rather would not do.

[EArminjon]

Hello @rrousselGit

Just to notice and to avoid any confusion: Router is coming from flutter/lib/src/widgets/router.dart, the 'solution' is not linked to GoRouter.

[rrousselGit]

If it's Router from Flutter, maybe.
Still, I'd like not to change this value too much.

To begin with, the issue is State.didChangeDependencies here.

This lifecycle isn't supported, regardless of Router.

[EArminjon]

I think you refer to the discussion i believe flutter/flutter#49505 ?

As an alternative we can use GoRouter refreshListenable as context watch/select will not be supported.

We can close this issue so.