如何在Laravel Nova Action中使用接口存储库？

namespace App\Repositories;

interface PostRepositoryInterface
{
    public function findById($id);
    public function update($id, array $data);
}

namespace App\Repositories;

use App\Models\Post;

class PostRepository implements PostRepositoryInterface
{
    public function findById($id)
    {
        return Post::find($id);
    }

    public function update($id, array $data)
    {
        $post = Post::find($id);
        $post->update($data);
        return $post;
    }
}

namespace App\Nova\Actions;

use App\Models\Post;
use App\Repositories\PostRepositoryInterface;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Queue\InteractsWithQueue;
use Laravel\Nova\Actions\Action;

class UpdatePost extends Action
{
    use Queueable, InteractsWithQueue;

    public $name = 'Update Post';

    protected $repository;

    public function __construct(PostRepositoryInterface $repository)
    {
        $this->repository = $repository;
    }

    public function handle(array $input)
    {
        $post = $this->repository->findById($input['post_id']);
        if ($post) {
            $this->repository->update($post->id, $input['data']);
        }
    }

    public function fields()
    {
        return [
            Select::make('Post ID')->options(Post::pluck('id', 'id')->toArray()),
            Text::make('Data')->rules('required'),
        ];
    }
}

use App\Repositories\PostRepositoryInterface;
use App\Repositories\PostRepository;

public function register()
{
    $this->app->bind(PostRepositoryInterface::class, PostRepository::class);
}

public function handle(array $input)
{
    if (!auth()->user()->can('update', Post::class)) {
        return Action::danger('You do not have permission to perform this action.');
    }

    $post = $this->repository->findById($input['post_id']);
    if ($post) {
        $this->repository->update($post->id, $input['data']);
    }
}