我在UserPolicies.php文件中的showAdmin()中无法显示Show in dojo.blade.php按钮（仅针对管理员（角色=== 1）），即使是管理员类型的用户，我也看不到该按钮。

• UserPolicies.php

<?php

namespace App\Policies;

use App\Models\User;
use Illuminate\Auth\Access\HandlesAuthorization;

class UserPolicy
{
    use HandlesAuthorization;

    /**
     * Create a new policy instance.
     *
     * @return void
     */
    public function __construct()
    {
        //
    }

    public function showAdmin(User $user){
        return $user->role === 1;
    }
}

• DojoController.php

public function show($id)
    {
        $dojo = DojoModel::find($id);
        $this->authorize('showAdmin', Auth::user());
        $fighter = FighterModel::get(['id','name']);
        $master = MasterModel::get(['id','name']);
        return view('dojo.show', compact(['dojo','fighter','master']));
    }

• dojo.blade.php

@can('showAdmin')
    <a href="{{ url("show-dojo/$d->id") }}" class="btn btn-warning"><i class="fa fa-eye"></i>&nbsp;Show</a>
@endcan

会有什么问题？