HovedprosjektWebApp/app/Providers/AuthServiceProvider.php

<?php

namespace App\Providers;

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

use App\BlogPost;
use App\Policies\BlogPostPolicy;
use Illuminate\Auth\SessionGuard;

class AuthServiceProvider extends ServiceProvider
{
    /**
     * The policy mappings for the application.
     *
     * @var array
     */
    protected $policies = [
        BlogPost::class => BlogPostPolicy::class,
    ];

    /**
     * Register any authentication / authorization services.
     *
     * @return void
     */
    public function boot()
    {
        $this->registerPolicies();
    }

    public function register()
    {
        SessionGuard::macro('admin', function () {
            return \Auth::user()->admin;
        });
    }
}