For those who are bothered by having the "all" filter button appear unselected when the status value in the query string is not within the allowed set of enums, you may find the below code useful to include in your IdeaController.

Thanks to @jacobodonnell in this thread with the tryForm suggestion, which the below code builds upon.

$status = $request->status;

// This returns null if $status is not within the allowed enums.
$status = Status::tryFrom($status ?? '');

// If the `status` query param is invalid or missing (set as null in the line above), then "all" is used.
$current = $status?->value ?? 'all';

$ideas = Auth::user()
    ->ideas()
    ->when($status, fn ($query, $status) => $query->where('status', $status))
    ->get();

return view('idea.index', [
    'ideas' => $ideas,
    'statuses' => Status::cases(),
    'status_counts' => Idea::statusCounts($user),
    'current' => $current,
]);

Passing current into your blade view, you can then conditionally style your filter button as needed, for example:

<div>
    <a
        href="{{ route('idea.index') }}"
        @class([
            'button',
            'active' => 'all' === $current,
        ])
    >
        All
    </a>
    @foreach ($statuses as $status)
        <a
            href="{{ route('idea.index', ['status' => $status->value]) }}"
            @class([
                'button',
                'active' => $status->value === $current,
            ])
        >
            {{ $status->label() }}
        </a>
    @endforeach
</div>

Idea Filtering