topnotch_website/app/Http/Controllers/PackingSlipController.php

<?php

namespace App\Http\Controllers;

use App\Http\Requests\PackingSlipRequest;
use App\Models\Customer;
use App\Models\PackingSlip;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;

class PackingSlipController extends Controller
{
    public function index(): void {}

    public function create(): void {}

    public function store(PackingSlipRequest $request): RedirectResponse
    {
        PackingSlip::create($request->validated());

        if ($request->get('from_customer')) {
            return redirect()->route('customers.show', [
                Customer::find($request->get('customer_id')),
                'tab' => 'packing',
            ]);
        }

        return redirect()->back(); //todo: change to packing slips page
    }

    public function show($id): void {}

    public function edit($id): void {}

    public function update(Request $request, $id): void {}

    public function destroy($id): void {}
}