warehouse/app/Http/Controllers/Items/CreateItemController.php

<?php

namespace App\Http\Controllers\Items;

use App\Models\Item;
use Framework\Routing\Router;

class CreateItemController
{
    public function handle(Router $router)
    {
        if (!session()->has('user_id')) {
            return redirect($router->route('show-register-form'));
        }

        secure();

        $data = validate($_POST, [
            'sku' => ['required'],
            'name' => ['required'],
            'description' => [],
            'reorder_level' => ['positive_integer'],
        ], 'create_item_errors');

        $item = new Item();
        $item->sku = $data['sku'];
        $item->name = $data['name'];
        $item->description = $data['description'] ?? '';
        $item->reorder_level = !empty($data['reorder_level']) ? (int) $data['reorder_level'] : 0;
        $item->save();

        return redirect($router->route('view-item', ['item' => $item->id]));
    }
}