PHP & Laravel Internship

// Week 6: eager loading, policy, queued job
public function store(StoreInvoiceRequest $request)
{
    $this->authorize('create', Invoice::class);

    $invoice = DB::transaction(function () use ($request) {
        $invoice = Invoice::create($request->validated());
        $invoice->items()->createMany($request->input('items'));
        return $invoice->load('items', 'client');
    });

    SendInvoiceEmail::dispatch($invoice)->onQueue('mail');

    return InvoiceResource::make($invoice)
        ->response()->setStatusCode(201);
}