为什么 Laravel 政策在 View/Blade 中不起作用?

Why Laravel Policy is not working in View/Blade?

我尝试使用政策过滤谁可以 edit/delete 我的应用程序,但它不起作用。尝试在 blade.

上使用它

QuestionPolicy.php

    const UPDATE = 'update';
    const DELETE = 'delete';

    /**
     * Check if user can update a question.
     */
    public function update(User $user, Question $question): bool
    {
        return $question->isAskedBy($user) || $user->isModerator() || $user->isAdmin();
    }

    /**
     * Check if user can delete a question.
     */
    public function delete(User $user, Question $question): bool
    {
        return ($question->isAskedBy($user) || $user->isModerator() || $user->isAdmin()) && !$user->isBanned();
    }

question.blade.php

@can(App\Policies\QuestionPolicy::UPDATE, App\Models\User::class, App\Models\Question::class)
   <a class="text-sm font-light text-gray-600" href="#">Edit</a>
@endcan
@can(App\Policies\QuestionPolicy::DELETE, App\Models\User::class, App\Models\Question::class)
   <a class="text-sm font-light text-gray-600" href="#">Delete</a>
@endcan

我做错了吗?尝试以管理员和创建问题的用户身份登录,但未呈现 link 到 edit/delete。

如果政策与特定问题有关,您需要传递问题的实际实例(并且不需要传递用户 class):

@can(App\Policies\QuestionPolicy::UPDATE, $question)
   <a class="text-sm font-light text-gray-600" href="#">Edit</a>
@endcan
@can(App\Policies\QuestionPolicy::DELETE, $question)
   <a class="text-sm font-light text-gray-600" href="#">Delete</a>
@endcan
策略中的

$user 始终是当前登录的用户。