Yes, it is possible to link to a filtered Laravel Nova resource. One way to achieve this is by passing the filter parameters as query string parameters in the URL. Here's an example of how to do this:

1. In your Genres resource, define an inline action that redirects to the Books resource with the corresponding genre filter applied. Here's an example:

public function actions(Request $request)
{
    return [
        (new Action('relatedBooks'))
            ->onlyOnTableRow()
            ->canSee(function ($request) {
                return true; // Add your authorization logic here
            }),
    ];
}

public function relatedBooks(Request $request, $resource)
{
    $genreId = $resource->id;
    $filter = base64_encode(json_encode([
        [
            'class' => GenreFilter::class,
            'value' => $genreId,
        ],
    ]));

    return Action::redirect('/nova/resources/books?filters=' . $filter);
}

1. In the Books resource, define a filter that filters the books by genre. Here's an example:

class GenreFilter extends Filter
{
    public function apply(Request $request, $query, $value)
    {
        return $query->where('genre_id', $value);
    }

    public function options(Request $request)
    {
        return Genre::pluck('name', 'id')->toArray();
    }
}

1. When the user clicks on the "Related Books" inline action in the Genres resource, they will be redirected to the Books resource with the corresponding genre filter applied. The filter parameters will be passed as a base64-encoded JSON string in the filters query string parameter.

2. In the Books resource, you can decode the filter parameters and apply them to the query builder. Here's an example:

public static function indexQuery(NovaRequest $request, $query)
{
    if ($request->filters) {
        $filters = json_decode(base64_decode($request->filters), true);

        foreach ($filters as $filter) {
            $query = app($filter['class'])->apply($request, $query, $filter['value']);
        }
    }

    return $query;
}

This code decodes the filters query string parameter, applies each filter to the query builder, and returns the modified query builder.