我如何让我的自定义闸门在Laravel中工作？

// 1. 创建自定义闸门类
namespace App\Gates;

use Illuminate\Contracts\Auth\Access\Gate;

class CustomGate
{
    public function __construct(Gate $gate)
    {
        $this->gate = $gate;
    }

    public function defineCustomPolicy()
    {
        $this->gate->define('custom-policy', function ($user) {
            // 在这里定义你的自定义策略逻辑
            return $user->isAdmin();
        });
    }
}

// 2. 注册自定义闸门类
namespace App\Providers;

use Illuminate\Support\Facades\Gate;
use Illuminate\Foundation\Support\Providers\AuthServiceProvider as ServiceProvider;
use App\Gates\CustomGate;

class AuthServiceProvider extends ServiceProvider
{
    public function boot()
    {
        $this->registerPolicies();

        $this->app->singleton(CustomGate::class, function ($app) {
            return new CustomGate(Gate::getFacadeRoot());
        });

        $customGate = $this->app->make(CustomGate::class);
        $customGate->defineCustomPolicy();
    }
}

// 3. 使用自定义闸门
namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Gate;

class MyController extends Controller
{
    public function myMethod(Request $request)
    {
        if (Gate::allows('custom-policy')) {
            // 用户具有自定义策略权限的处理逻辑
            return 'Access granted';
        } else {
            // 用户没有自定义策略权限的处理逻辑
            return 'Access denied';
        }
    }
}