laravel-simplepos/database/seeders/DummySeeder.php

<?php

namespace Database\Seeders;

use App\Models\Category;
use App\Models\Customer;
use App\Models\Product;
use Illuminate\Database\Seeder;
use Illuminate\Support\Str;

class DummySeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        foreach(['makanan', 'minuman'] as $cat) {
            $category = Category::create(['name' => $cat]);
        }

        foreach(['Roti Tawar', 'Indomie', 'Telur Omega 3'] as $prod) {
            Product::create([
                'code' => Str::upper(Str::random(6)),
                'name' => $prod,
                'price' => rand(1000,10000),
                'cost' => rand(1000,10000),
                'stock' => rand(1,99),
                'category_id' => $category->id,
            ]);
        }

        foreach (['Customer A', 'Customer B'] as $cust) {
            Customer::create([
                'code' => Str::upper(Str::random(6)),
                'name' => $cust,
            ]);
        }
    }
}