Omnipay - Laravel - Finalize Paypal Pyment

Question

I have the following SuccessPayment Method:

    public function getSuccessPayment() {
    $gatewayFactory = new \Omnipay\Common\GatewayFactory;
    $gateway = $gatewayFactory->create('PayPal_Express');
    #Test API Sandbox
    $gateway->setUsername('xxxxxxx.de');
    $gateway->setPassword('xxxxxxxxx');
    $gateway->setSignature('xxxxx.xxxxx.xxxxx.xxxxxxx');
    $gateway->setTestMode(true);

    # FINALIZZZE PAYPAL PAYMENT
    $response = $gateway->completePurchase($this->getApiInfos())->send();
    $data = $response->getData();

    # IF SUCCESSFULLLLLLL
    if($data['ACK'] == 'Success'):
        $order = Order::where('paypalToken',$data['TOKEN'])->first();
        # Set Status
        $order->orderSuccess = 4;
        $order->orderPaid = 1;
        # Set PP ID
        $order->paypalTransactionId = $data['PAYMENTINFO_0_TRANSACTIONID'];
        $order->save();

        # Destroy Cart
        Cart::destroy();

        # Send Confirm Mail
        $this->sendConfirmOrderMail($order->id, Auth::user()->id);

        return View::make('pages.checkout.success', compact(['order','data']));
    endif;
}  

$this->getApiInfos() has the credentials and information, which are going to PP, here's the method:

    public function getApiInfos($order = NULL) {
  return array(
    'amount'=> Cart::total(),
    'cancelUrl' => \URL::route('paypal_cancel_order'),
    'returnUrl' => \URL::route('paypal_return'),
    'description' => 'Your Payment at xxxxxx - Order #',
    'currency' => 'EUR'
  );
}  

Look at the description. How can I get the orderID into the description, after the redirect to Paypal and after I was redirected back to my page?
I'm loosing my session and order (I guess!), so how can I do that?

Also, Do you know, how I could send Shipping costs, tax and a header image to PayPal via Omnipay?

Answer 1

To get the Transaction Reference that you sent to Paypal, you can do

$response->getTransactionReference();

To the latter half of your question:
The PayPal Express gateway has the following functions for setting images:

$gateway->setHeaderImageUrl()
$gateway->setLogoImageUrl()

All of the requests have the following functions

$request->setTaxAmount()
$request->setShippingAmount()
$request->setHandlingAmount()
$request->setShippingDiscount()
$request->setInsuranceAmount()