Configure children with the PHP API

use Illuminate\Database\Eloquent\Builder;

$author = $children->render(
    'author',
    'main',
    ['searchable' => true, 'required' => true],
    configure: fn (SelectField $select) => $select
        ->relationship(
            'author',
            'name',
            modifyQueryUsing: fn (Builder $query) => $query
                ->where('tenant_id', $tenant->getKey())
                ->where('active', true),
        ),
);

$results = $children->render(
    'results',
    'main',
    [
        'searchable' => true,
        'paginatedSearchResults' => true,
        'virtualizeThreshold' => 100,
        'virtualRowHeight' => 36,
        'virtualWindowSize' => 30,
    ],
    configure: function (SelectField $select) use ($repository, $tenant): void {
        $select
            ->getSearchResultsPageUsing(
                fn (string $search, ?string $cursor, int $pageSize) =>
                    $repository->page($tenant, $search, $cursor, $pageSize),
            )
            ->getOptionLabelUsing(
                fn ($value) => $repository->allowedLabel($tenant, $value),
            );
    },
);