Laravel 实战开发知乎: 私信通知

NewMessageNotification 它不知道有没有做什么特别的处理
目前我的执行没有任何报错，私信发送成功，但关于这个私信的消息提示一直没有.
代码大概如下：

<?php
namespace App\Notifications;

use Illuminate\Bus\Queueable;
use Illuminate\Notifications\Notification;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Notifications\Messages\MailMessage;

class NewMessageNotification extends Notification
{
    use Queueable;

    public $message;

    public function __construct(Message $message)
    {
        $this->message = $message;
    }

    public function via($notifiable)
    {
        // return ['mail'];
        return ['database'];
    }

    public function toDatabase($notifiable)
    {
       return [
            'name' => $this->message->fromUser->name,
            'dialog' => $this->message->dialog_id,
       ];
    }

<?php
namespace App\Http\Controllers\Home;

use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use App\Repositories\MessageRepository;
use App\Notifications\NewMessageNotification;
use Illuminate\Support\Facades\Notification;
use Auth;

class InboxController extends Controller
{
    protected $message;

	public function __construct(MessageRepository $message)
	{
		$this->middleware('auth');
                $this->message = $message;
	}

	/**
	 * 私信首页
	 */
    public function index()
    {
        $messages = $this->message->getAllMessages();
       
    	return view('inbox.index',['messages'=>$messages->unique('dialog_id')->groupBy('dialog_id')]);
    }

    /**
     * 显示私信列表 
     */
    public function show($dialogId)
    {
    	$messages = $this->message->getMessageByDialogId($dialogId);
        
        $messages->markAsRead();

    	return view('inbox.show', compact('messages', 'dialogId'));
    }

    /**
     * 私信回复
     */
    public function store($dialogId)
    {
        // 根据 $dialogId 查询用户私信相关内容
    	$message = $this->message->getSingleMessageBy($dialogId);
        
    	// 获取接收私信用户的id
    	$toUserId = $message->from_user_id == user()->id ? $message->to_user_id : $message->from_user_id;
    	
    	$newMessage = $this->message->addMessage([
    		'from_user_id' => user()->id,
    		'to_user_id' => $toUserId,
    		'body' => request('body'),
    		'dialog_id' => $dialogId
    	]);

        // 这里希望接收私信用户看到消息提示，所以用 toUser
        $newMessage->toUser->notify(new NewMessageNotification( $newMessage ));

    	return back();
    }

}

报错内容如下：
Type error: Argument 1 passed to App\Notifications\NewMessageNotification::__construct() must be an instance of App\Notifications\Message, instance of App\models\Message given, called in /vagrant/zt360/admin/app/Http/Controllers/Home/InboxController.php on line 62

问题解决，没有引入 model

再修复一个bug 自己不能给自己发私信 不然 会出现问题 应该在questions/show.blade.php视图中加入判断 代码如下:
         @if(Auth::check() && user()->id != $question->user_id)
                        <send-message user="{ $question->user_id }" ></send-message>
          @elseif(Auth::check() && user()->id == $question->user_id )
           @else
                  <a href="{url('user/login')}" class="btn btn-default">发送私信</a>
          @endif