Missing required parameter for Route

[hasanmonfared]

hi, Where is my mistake? Thank you for your help

my error:

**Missing required parameter for [Route: serviceSubFields.list] [URI: admin/service_sub_fields/{fields}/list/{method?}] [Missing parameter: fields]. (View: /var/www/html/afiyatbashe-main/vendor/tabuna/breadcrumbs/views/breadcrumbs.blade.php)**

this rout :

Route::screen('service_sub_fields/{fields}/list', \App\Orchid\Screens\ServiceSubFields\ServiceSubFieldsListScreen::class)
    ->name('serviceSubFields.list')
    ->breadcrumbs(function (Trail $trail) {
        return $trail
            ->parent('serviceFields.list')
            ->push(__('Service sub fields'), route('serviceSubFields.list'));
    });

screeen :

use App\Models\ServiceFields;
use App\Orchid\Layouts\ServiceSubFields\ServiceSubFieldsListLayout;
use Orchid\Screen\Screen;

class ServiceSubFieldsListScreen extends Screen
{
    /**
     * Display header name.
     *
     * @var string
     */
    public $name = 'ServiceSubFieldsListScreen';

    /**
     * Display header description.
     *
     * @var string|null
     */
    public $description = 'ServiceSubFieldsListScreen';

    /**
     * @var bool
     */
    public $exists = false;

    /**
     * Query data.
     *
     * @return array
     */
    public function query(ServiceFields $serviceFields): array
    {
        $this->exist = $serviceFields->exists;
        return [
            'fields' => $serviceFields->ServiceSubFields
        ];
    }

    /**
     * Button commands.
     *
     * @return \Orchid\Screen\Action[]
     */
    public function commandBar(): array
    {
        return [];
    }

    /**
     * Views.
     *
     * @return \Orchid\Screen\Layout[]|string[]
     */
    public function layout(): array
    {
        return [
            ServiceSubFieldsListLayout::class
        ];
    }
}

table :

use App\Models\ServiceSubFields;
use Orchid\Screen\Layouts\Table;
use Orchid\Screen\TD;

class ServiceSubFieldsListLayout extends Table
{
    /**
     * Data source.
     *
     * The name of the key to fetch it from the query.
     * The results of which will be elements of the table.
     *
     * @var string
     */
    protected $target = 'fields';

    /**
     * Get the table cells to be displayed.
     *
     * @return TD[]
     */
    protected function columns(): array
    {
        return [
            TD::make('name')->render(function (ServiceSubFields $serviceSubFields){
                return $serviceSubFields->name;
            })
        ];
    }
}

[tabuna]

Hi, routes are bound by name. It will be enough to change the route name to the name of the variable that is expected:

Route::screen('service_sub_fields/{serviceFields}/list', ....)

[hasanmonfared]

Hi, I found the answer. In Rout , "?" needs to be used

Route::screen('service_sub_fields/{fields?}/list', \App\Orchid\Screens\ServiceSubFields\ServiceSubFieldsListScreen::class)
    ->name('serviceSubFields.list')
    ->breadcrumbs(function (Trail $trail) {
        return $trail
            ->parent('service.list')
            ->push(__('Service sub fields'), route('serviceSubFields.list'));
    });

[tabuna]

"?" - indicates that the argument is optional.

[hasanmonfared]

thank you