[Dynamic slug in Laravel 7] Step 2: Congtroller.php

<?php

namespace App\Http\Controllers;

use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
use Illuminate\Foundation\Bus\DispatchesJobs;
use Illuminate\Foundation\Validation\ValidatesRequests;
use Illuminate\Routing\Controller as BaseController;

class Controller extends BaseController
{
    // ...
  
    // ADD THIS STATIC FUNCTION.
    static public function uuid()
    {
        return hash('crc32', time().hash('crc32', time().uniqid()));
    }
    // ...
}