John Davidson

Message:

i am creating A notifcation for user that created a new post on my site and the user will be awarded point after creating a post, so when a user create a post and get a point send notification but im getting this error

???? Property [id] does not exist on this collection instance.

please how can I resolve this issue kindly assist me

<?php



namespace App\Http\Livewire;



use App\Gamify\Points\PostCreated;

use App\Models\Category;

use App\Models\Post;

use App\Models\Tag;

use App\Models\User;

use App\Notifications\PointAdd;

use Illuminate\Support\Str;

use Livewire\Component;

use Illuminate\Http\Response;

use Livewire\WithFileUploads;



class PostCreate extends Component

{

    use WithFileUploads;

    public $post;

    public $user;

    public $body;

    public $slug;

    public $photo;

    public $title;

    public $category = 1;

    public $points = 10;

    public $energy = 1;



    public function increment()

    {

        $this->points++;

    }



    protected $rules = [

        'category' => 'required|integer|exists:categories,id',

        'title' => 'required|min:4',

        'body' => 'required|min:4',

    ];



    public function createPost()

    {

        if (auth()->check()) {

            $this->validate();

            $random =  str_pad(mt_rand(1,999999),6,'0',STR_PAD_LEFT);

            $post = Post::create([

                'user_id' => auth()->user()->id,

                'title' => $this->title,

                'category_id' => $this->category,

                'body' => $this->body,

                'post_number' => $random,

                'slug' => Str::slug($this->title),

            ]);

                $user = auth()->user();

                $points = $user->givePoint(new PostCreated($post));

                $user->notify(new PointAdd($points));



                $image = $this->photo->storeAs('posts', str::random(30));

                $post->image = $image;

                $post->save();

                session()->flash("message", "Featured image successfully uploaded");



                preg_match_all('/(?<=#)(\w+)/mi', $this->body, $matchedTags, PREG_SET_ORDER, 0);

                foreach ($matchedTags as $matchedTag) {

                    if (!$tag = Tag::where('name', $matchedTag[0])->first()) {

                        $tag = tag::create(['name' => $matchedTag[0]]);

                    }

                    $post->tags()->attach($tag->id);

                    $tag->addEnergy(1);

                }



                preg_match_all('/(?<=@)(\w+)/mi', $this->body, $matchedMentions, PREG_SET_ORDER, 0);

                foreach ($matchedMentions as $matchedMention) {

                    optional(User::where('username', $matchedMention[0])->first(), function ($user) {

                        // $user->notify(new MentionsNotify($user));

                    });

                 }





            // $users = auth()->user();

            // $users->increment('points', 10);



            session()->flash('success_message', 'Post was added successfully!');



            $this->reset();



            return redirect()->route('post.index');

        }



        abort(Response::HTTP_FORBIDDEN);

    }

}

My notification components

<?php



namespace App\Notifications;



use App\Models\Post;

use App\Models\User;

use Illuminate\Bus\Queueable;

use Illuminate\Contracts\Queue\ShouldQueue;

use Illuminate\Notifications\Messages\MailMessage;

use Illuminate\Notifications\Notification;



class PointAdd extends Notification

{

    use Queueable;



    /**

     * Create a new notification instance.

     *

     * @return void

     */

    public function __construct(User $user)

    {

        $this->user = $user;

    }



    /**

     * Get the notification's delivery channels.

     *

     * @param  mixed  $notifiable

     * @return array

     */

    public function via($notifiable)

    {

        return ['mail', 'database'];

    }



    /**

     * 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 [

            'user_id' => $this->user->id,

            'user_name' => $this->user->name,

            'user_avatar' => $this->user->avatar,

            'user_points' => $this->user->reputation,

            'post_id' => $this->user->post->id,



        ];

    }

}

---

My Answer:
To resolve this issue, you need to make sure that you are accessing the correct property on the collection instance. In Laravel, when you retrieve a collection of models, you need to access the properties using the `->` operator.

For example, if you are trying to access the `id` property of a user model in a collection, you should do something like this:

php
$user = $users->first(); // Assuming $users is the collection of users
$userId = $user->id;


Make sure to replace `$users` with your actual collection variable name.

If you are still facing issues, please provide more details or code snippets so that I can assist you further.