workbench/database/seeders/DatabaseSeeder.php


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<?php

namespace Workbench\Database\Seeders;

use Illuminate\Database\Seeder;
use Workbench\App\Models\Category;
use Workbench\App\Models\Order;
use Workbench\App\Models\Product;

class DatabaseSeeder extends Seeder
{
    /**
     * Seed the application's database.
     */
    public function run(): void
    {
        $categories = Category::factory()->count(10)->create();

        $products = Product::factory()
            ->state(fn () => ['category_id' => $categories->random()->id])
            ->count(104)
            ->create();

        Order::factory()->count(50)->create()->each(function ($order) use ($products) {
            $orderProducts = $products->random(rand(1, 5));
            foreach ($orderProducts as $product) {
                $quantity = rand(1, 5);
                $order->products()->attach($product->id, [
                    'quantity' => $quantity,
                    'price' => $product->price,
                ]);
            }
            $order->update(['total' => $order->products->sum(fn ($p) => $p->pivot->quantity * $p->pivot->price)]);
        });
    }
}