Slugify On Create

public static function boot()
{
   parent::boot();

   static::creating(function($model) {
       $model->slug = str_slug($model->ToBeSlugified);

       $latestSlug =
           static::whereRaw("slug = '$model->slug' or slug LIKE '$model->slug-%'")
               ->latest('id')
               ->value('slug');
       if ($latestSlug) {
           $pieces = explode('-', $latestSlug);

           $number = intval(end($pieces));

           $model->slug .= '-' . ($number + 1);
       }
   });
}