App\Repositories\Invoice\InvoiceRepository::create PHP Method

    public function create($clientid, $timetaskid, $requestData)
    {
        $invoice = Invoice::create();
        $invoice->clients()->attach($clientid);
        foreach ($timetaskid as $tk) {
            $testid[] = $tk->id;
        }
        $invoice->tasktime()->attach($testid);
        $invoice->save();
    }