Make your model sluggable

Berita.php

<?php

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Str;

class Berita extends Model
{
    use HasFactory;

    protected $table = 'berita';

    protected $fillable = [
        'penulis_id',
        'title',
        'slug',
      
    ];
  
    public static function boot()
    {
        parent::boot();

        static::creating(function ($model) {

            // produce a slug based on the activity title
            $slug = Str::slug($model->title);

            // check to see if any other slugs exist that are the same & count them
            $count = static::whereRaw("slug RLIKE '^{$slug}(-[0-9]+)?$'")->count();

            // if other slugs exist that are the same, append the count to the slug
            $model->slug = $count ? "{$slug}-{$count}" : $slug;
        });
    }
}