App\Http\Controllers\QuoteController::create PHP Method

    public function create(InvoiceRequest $request, $clientPublicId = 0)
    {
        if (!Utils::hasFeature(FEATURE_QUOTES)) {
            return Redirect::to('/invoices/create');
        }
        $account = Auth::user()->account;
        $clientId = null;
        if ($clientPublicId) {
            $clientId = Client::getPrivateId($clientPublicId);
        }
        $invoice = $account->createInvoice(ENTITY_QUOTE, $clientId);
        $invoice->public_id = 0;
        $data = ['entityType' => $invoice->getEntityType(), 'invoice' => $invoice, 'data' => Input::old('data'), 'method' => 'POST', 'url' => 'invoices', 'title' => trans('texts.new_quote')];
        $data = array_merge($data, self::getViewModel());
        return View::make('invoices.edit', $data);
    }