php - Laravel whereSlug 不工作

Question

当我想在 Laravel 中使用这样的 slug 搜索票证时:

 public function showTicket(Request $slug)
{
     $ticket = Ticket::whereSlug($slug)->firstOrFail();
     if(Auth::user()->id == $ticket->user_id)
     {
        return view('users.ticket')->with('ticket',$ticket);
     }
}

我收到错误:

> ModelNotFoundException in Builder.php line 157:
No query results for model [App\Ticket].
in Builder.php line 157
at Builder->firstOrFail() in UserTicketsController.php line 66
at UserTicketsController->showTicket(object(Request), '5627caed7b3bb')
at call_user_func_array(array(object(UserTicketsController), 'showTicket'), array(object(Request), 'slug' => '5627caed7b3bb')) in Controller.php line 256
at Controller->callAction('showTicket', array(object(Request), 'slug' => '5627caed7b3bb')) in ControllerDispatcher.php line 164
at ControllerDispatcher->call(object(UserTicketsController), object(Route), 'showTicket') in ControllerDispatcher.php line 112
at ControllerDispatcher->Illuminate\Routing\{closure}(object(Request))

这个错误:

NotFoundHttpException in Handler.php line 46: No query results for model [App\Ticket]. in Handler.php line 46 at Handler->render(object(Request), object(ModelNotFoundException)) in Kernel.php line 281 at Kernel->renderException(object(Request), object(ModelNotFoundException)) in Kernel.php line 91 at Kernel->handle(object(Request)) in index.php line 54

但是当我这样做时:

$ticket = Ticket::whereId(1)->firstOrFail();

有效吗？所以它可以找到模型。我现在知道可能出了什么问题。当我查看数据库时，当我单击票证时，该 slug 也存在，网址正确，这是我的路线:

Route::get('ticket/{slug?}','UserTicketsController@showTicket');

请帮助我。

Answer 1

如果您使用 Request 类，请尝试以下操作:

$ticket = Ticket::whereSlug($slug->get('id'))->firstOrFail();

如果您传递参数，请勿使用 Request 类型。

public function showTicket($slug)
{
    $ticket = Ticket::whereSlug($slug)->firstOrFail();