php - Laravel 观察者不工作

Question

我正在尝试使用 laravel observers 来监听模型事件问题是当我提交表单(更新或创建新记录)时，什么也没发生。我错过了什么吗？

app.php

  'providers' => [
        ...
         App\Providers\CasesManagerServiceProvider::class,
]

CasesManagerServiceProvider.php

class CasesManagerServiceProvider extends ServiceProvider
{

    public function boot( )
    {

        Cases::observe(CasesObserver::class);
    }

    public function register()
    {

    }

}

CasesObserver.php

class CasesObserver
{
    private $cases;

    public function __construct(Cases $cases){
        $this->cases = $cases;
  }


    public function creating(Cases $case)
    {
        dd('creating');
    }

    public function saved(Cases $case)
    {
        dd('saved');
    }

    public function updating($case)
    {
        dd('updating');
    }
    public function updated($case)
    {
        dd('updated');
    }
}

案例.php

class Cases extends Model
{
    const UPDATED_AT = 'modified_at';

    protected $dispatchesEvents = [
    'updating' => CasesObserver::class,
    'updated'  => CasesObserver::class,
    'creating' => CasesObserver::class,
    'saved'    => CasesObserver::class,
];
}

Answer 1

对我来说，问题是在 register() method! 中注册观察者
所以当我把它放在 boot() method一切顺利!原因是提到的服务提供者中运行方法的顺序hear

希望有用