attach($user->id) 不工作并且呈现为 null

Question

我有一个消息系统，允许用户互相发送消息、回复消息以及在收到消息时收到通知。我遇到的问题是 $conversation->participants()->attach($reciever->id); returns null 并且似乎没有附加对话参与者我 dd() 的价值。

InboxTest.php

public function a_user_can_leave_a_reply_in_conversation()
{
    $this->withoutExceptionHandling();

    $this->actingAs($user = factory('App\User')->create());

    $conversation = factory('App\Conversation')->create();

    $reciever = factory('App\User')->create();

    $conversation->participants()->attach($reciever->id);

    $response = $this->json('POST', '/api/message/'. $conversation->hashed_id . '/reply', ['body'=> 'A new message.'])
        ->assertStatus(201);

    $response->assertJsonFragment(['body' => 'A new message.']);

    $this->assertDatabaseHas('messages', [
        'conversation_id' => $conversation->id,
        'sender_id' => $user->id,
        'body' => 'A new message.'
    ]);

    $this->assertDatabaseHas('conversation_participants',[
        'user_id' => $reciever->id
    ]);
}

这也导致通知系统出错：

Error: Call to a member function routeNotificationFor() on null

InboxController.php

public function reply($hashedId, Request $request)
{
    $this->validate($request, [
        'body' => 'required',
    ]);

    $conversation = Conversation::where('hashed_id', $hashedId)->first();

    $users = $conversation->recipients;

    $notifications = Notification::send($users, new MessageNotification(auth()->user()));

    $message = $conversation->messages()->create([
        'sender_id' => auth()->user()->id,
        'body' => $request->body,
    ]);

    return new MessageResource($message);
}

这是我的人际关系：

Conversations.php

public function participants()
{
    return $this->belongsToMany('App\User' ,'conversation_participants','conversation_id','user_id')->withPivot(['status','is_sender']);
}

User.php

public function conversations()

{
    return $this->belongsToMany('App\Conversation','conversation_participants', 'user_id', 'conversation_id');
}

participants() 关系方法中的 withPivot() 有没有可能搞砸了？我做错了什么？

Answer 1

我在对话模型中没有看到任何 recipients 关系。

但是在控制器中，您试图让用户使用收件人关系，并将通知发送给这些用户。

InboxController.php

$users = $conversation->recipients;

$notifications = Notification::send($users, new 
      MessageNotification(auth()->user()));

我从您的测试功能中了解到，您没有将任何用户附加到收件人方法。您将其附加到参与者关系中。

InboxTest.php

$reciever = factory('App\User')->create();
$conversation->participants()->attach($reciever->id);

如您所写的那样，附加方式非常好。

也许与participants/recipients关系有关。如果我有任何错误，请在评论中告诉我。

attach($user->id) 不工作并且呈现为 null

attach($user->id) isn't working and is rendering as null

many-to-many

relationship

laravel

eloquent