Laravel应用具有角色,每个Role
都具有权限(很多)。
每个用户都有多个角色(多对多)
更改/更新角色的权限时,将触发事件RolePermissionsChanged
,并且侦听器具有以下代码:
public function handle(RolePermissionsChanged $event)
{
$role_permissions=$event->role()->permissions;
foreach ($event->role()->users as $user) {
$user->permissions()->sync($role_permissions);
}
}
这必须更新permission_user
表以将角色同步到用户。触发事件后,作业将失败并显示错误:
Method Illuminate\Database\Eloquent\Collection::sync does not exist.
如果我将foreach
循环中的行更改为App\User::find($user->id)->permissions()->sync($role_permissions);
,则该行有效,但我知道应该以另一种方式进行。谁能指导我要去哪里错了。
编辑:
下面是RolePermissionsChanged::class
<?php
namespace App\Events\Auth;
use Illuminate\Queue\SerializesModels;
use Illuminate\Foundation\Events\Dispatchable;
use App\Role;
class RolePermissionsChanged
{
use Dispatchable, SerializesModels;
public $role;
public function __construct(Role $role)
{
$this->role=$role;
}
}
答案 0 :(得分:1)
$event->role()
应该为$event->role
,这是事件类中定义的公共属性,其中$event->role()
将其视为函数调用。
public function handle(RolePermissionsChanged $event)
{
$permission_ids = $event->role->permissions->pluck('id')->toArray();
$event->role->users->each(function (User $user) use ($permission_ids) {
$user->permissions()->sync($permission_ids);
});
}