calcioa5/app/Notifications/FacebookPost.php

<?php

namespace App\Notifications;

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

use NotificationChannels\FacebookPoster\FacebookPosterChannel;
use NotificationChannels\FacebookPoster\FacebookPosterPost;

class FacebookPost extends Notification
{
    use Queueable;

    /**
     * Create a new notification instance.
     *
     * @return void
     */
    public function __construct()
    {
        //
    }

    /**
     * Get the notification's delivery channels.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function via($notifiable)
    {
        return [FacebookPosterChannel::class];
        //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('The introduction to the notification.')
                    ->action('Notification Action', url('/'))
                    ->line('Thank you for using our application!');
    }

    /**
     * Get the array representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function toArray($notifiable)
    {
        return [
            //
        ];
    }

    public function toFacebookPoster($notifiable) {
        
        $url = url(env('APP_URL') . "/" . $notifiable->slug);
        //$title = $notifiable->title;        
        //$title = str_replace("’", "'", $title);
        //$title = str_replace('“', "'", $title);
        $text = $notifiable->title;
        return (new FacebookPosterPost($text))->withLink($url);
    }

}