Coupons! Adding the Form

Hey Blueblazer!
Nice idea, definitely an user will find it helpful

You need two things here, one in your template for sending an AJAX to the server, and a Route in your controller, for handling that request

If you are using Jquery you can use $.ajax() method for seding that request, like this:

$.ajax({
  url: "{{ path('order_remove_product', {id: product.id}) }}",
  method: "DELETE"
})
  .done(function( data ) {
    //data variable contains the response from the server
    //logic for showing a successful message to the user
  });

Yep, you can use twig inside javascript for simplifying some things, and you only have to adjust that path and product id

Controller:

    /**
     * @Route("/cart/product/{id}", name="order_remove_product")
     * @Method("DELETE")
     */
    public function removeProductAction(Product $product)
    {
        $this->get('shopping_cart')
            ->removeProduct($product);
        
        return new JsonResponse('Product removed!');
    }

You can read more about Jquery AJAX here:
http://api.jquery.com/jquery.ajax/

Cheers!

thanks :)
but how should the removeProduct function look like? :P

Hey Blueblazer,
Sorry! I forgot about that method :p
Your implementation looks fine to me, but I think this way may be faster

    public function removeProduct(Product $product){
        $products = $this->getProducts();
        
        if(in_array($product, $products)){
            unset($products[$product->getId()]);
            $this->updateProducts($products);
         }
    }

Products are only updated if the item was found, if it wasn't found you might want to throw an exception because it shouldn't happen

Cheers!

thanks you are awasome :)

but now i get this nasty error: http://imgur.com/a/hU9Kx why does it not recognice the product variable, because it is existing?

Hey Blueblazer172 ,

Please, ensure you're passing "product" variable in all places where you render "order/checkout.html.twig" template - I bet you just missed it somewhere.

Cheers!

yeah my problem is passing the variable to the template, but how can i if the user hasn't selected something.

i tried like this in ordercontroller.php:

/**
 * @Route("/checkout", name="order_checkout", schemes={"%secure_channel%"})
 * @Security("is_granted('ROLE_USER')")
 */
public function checkoutAction(Request $request, Product $product)
{
    if (!$products = $this->get('shopping_cart')->getProducts()) {
        $this->addFlash('warning', 'No Products in Cart');
        return $this->redirectToRoute('homepage');
    }

    $error = false;
    if ($request->isMethod('POST')) {
        $token = $request->request->get('stripeToken');

        try {
            $this->chargeCustomer($token);
        } catch (\Stripe\Error\Card $e) {
            $error = 'There was a problem charging your card: '.$e->getMessage();
        }

        if (!$error) {
            $this->em = $this->get('fos_user.user_manager');
            $role = $this->getUser()->addRole('ROLE_BUYER_USER');
            $this->em->updateUser($role);

            $this->get('shopping_cart')->emptyCart();
            $this->addFlash('success', 'Yay! Order fully completed!');

            return $this->redirectToRoute('homepage');
        }
    }

    return $this->render('order/checkout.html.twig', array(
        'products' => $products,
        'cart' => $this->get('shopping_cart'),
        'stripe_public_key' => $this->getParameter('stripe_public_key'),
        'error' => $error,
        'product' => $this->get('shopping_cart')->getProductId($product)
    ));

and the getProductId() funtion in the shoppingcart.php:

public function getProductId(Product $product)
{
    return $product->getId();
}

but then i get this error:

Unable to guess how to get a Doctrine instance from the request information for parameter "product".

Hmm, looks like you are mixing some things:
- You shouldn't need to pass the shopping cart to the template, only the products
- Instead of asking for product ID to the shopping cart, you can ask it directly to the product itself
- And if the user hasn't selected anything, then he can't remove anything :)

I hope this makes sense to you :)

Have a nice day!

Hey Blueblazer172
As Victor said, you might have forgotten to pass "product" variable to the template

Have a nice day!

currently my 2 functions in the shoppingcart look like this:

public function addProduct(Product $product)
{
    $products = $this->getProducts();

    if (!in_array($product, $products)) {
        $products[] = $product;
    }

    $this->updateProducts($products);
}

public function removeProduct(Product $product)
{
    $products = $this->getProducts();
    $id = $product->getId();

    if (($key = array_search($id, $products)) !== false) {
        unset($products[$key]);
    }

    $this->updateProducts($products);
}