laravel notification does not work for me - laravel

Question

I want to send an email to user with a message as below:
MessageController.php:
public function store(Request $request)
{
$user_id = auth()->user()->id;
$message = new Message;
$message->title = $request->title;
$message->body = $request->body;
$message->offer_id = $request->offer_id;
$message->user_id = $user_id;
$message->with_profile = $request->employeeProfile;
$message->save();
//return response()->json($message); -> this gives correct message
$offer = Offer::where('id', '=', $request->offer_id)->first();
//here I'm trying to get user Id, basing on offer (I knot I should use other way, but I'll correct it later
$user = User::where('id', '=', $offer->user_id)->first();
$user->notify(new OfferMessage($message)); -> this gives error "Undefined variable: message"
return response()->json(['created' => true], 201);
}
The problem is that it gives me an error: "Undefined variable: message", while I'm reciving correct message when I uncoment "return response()->json($message);"
What am I doing wrong here?
edit:
My Message.php class: (I don't have OfferMessage class)
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Notifications\Notifiable;
use App\Notifications\OfferMessage;
class Message extends Model
{
use Notifiable;
}
edit2: Notifications/OfferMessage.php
<?php
namespace App\Notifications;
use Illuminate\Bus\Queueable;
use Illuminate\Notifications\Notification;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Notifications\Messages\MailMessage;
use App\Message;
class OfferMessage extends Notification
{
use Queueable;
public $message;
/**
* Create a new notification instance.
*
* #return void
*/
public function __construct(Message $message)
{
$this->message = $message;
}
/**
* Get the notification's delivery channels.
*
* #param mixed $notifiable
* #return array
*/
public function via($notifiable)
{
return ['mail'];
}
/**
* Get the mail representation of the notification.
*
* #param mixed $notifiable
* #return \Illuminate\Notifications\Messages\MailMessage
*/
public function toMail($notifiable)
{
return (new MailMessage)
->line('You've got new message: '.$message->offer_id)
->line($message->title)
->line($message->body)
->line('Sent by:'.$message->user_id)
->line('Thank you for using our application!');
}
/**
* Get the array representation of the notification.
*
* #param mixed $notifiable
* #return array
*/
public function toArray($notifiable)
{
return [
//
];
}
}

Answer 1

Change your OfferMessage Class toMail method
Change $message TO $this->message
public function toMail($notifiable)
{
return (new MailMessage)
->line("You've got new message: ".$this->message->offer_id)
->line($this->message->title)
->line($this->message->body)
->line('Sent by:'.$this->message->user_id)
->line('Thank you for using our application!');
}