OK I see, I thought that it's already redirecting to the cart page because you said "go directly to the checkout page instead of the cart page". I will tell you how to achieve it below but please note that this modification will override some of the core files and not update-proof, so you will lose the modifications after an Arastta update. If you want this modification to be update-proof, I can provide you a custom work, so you can ask me.

So here is how you can manage it:

Open this file:

/catalog/controller/checkout/cart.php

And find this line:

$this->cart->add($product_id, $quantity, $option, $recurring_id);

Add this code just below:

$json['redirect'] = str_replace('&', '&', $this->url->link('checkout/checkout', ''));

And then open this file:

/catalog/view/theme/YOUR_THEME/template/product/product.tpl

and find this line:

if (json['success']) {

                cart.after('add', json);

Add the following code just above it:

if (json['redirect']) {

                location = json['redirect'];

            }

That's all. But before trying, it's better to refreshing your modifications from Modification page (Extensions > Modification).

Regards

Thanks for your reply, the idea is to do a modification in the code or to modify an opencart extension that can do so.
i know that there is no configuration in arastta but i was asking if there is a way to modify some code to realise my goal. Where should i do the modification?

Thanks

Hello,

Arastta doesn't redirect the customers after adding a product to the cart. Do you use a 3rd party extension to do that? If so, you need to modify the 3rd party extension itself.

Arastta, since 1.3, opens a modal window after adding a product to the cart. And there are "View Cart" and "Checkout" links in the modal window.

Regards.