rag/app/Models/Chat.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\BroadcastsEvents;
use Illuminate\Database\Eloquent\Concerns\HasUuids;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\MorphToMany;

class Chat extends Model
{
    use HasUuids;
    use BroadcastsEvents;

    protected $fillable = ['title', 'text'];

    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class);
    }

    public function messages(): HasMany
    {
        return $this->hasMany(Message::class)->orderBy('id');
    }

    public function batches(): MorphToMany
    {
        return $this->morphToMany(JobBatch::class, 'batchable', relatedPivotKey: 'batch_id')->withPivot('type');
    }

    public function broadcastOn(string $event): array
    {
        return [$this, $this->user];
    }

//    public function broadcastWith(string $event): array
//    {
//        return ['id' => $this->id, 'title' => $this->title];
//    }
}