如何链接到具有与我的网站相同的产品页面ID的外部OpenCart产品页面？

Question

I would like to add an external link to the OpenCart product page - it can be anywhere on the page. I just want to link it to the same product page on an external site that has different options.

I tried to define it in the product controller file at breadcumbs but I don't have idea how can I change the default http value via PHP str_replace or something similar.

'href' => $this->url->link('product/product', $url . '&product_id=' . $this->request->get['product_id']),
'href2' => $this->url->link('product/product', $url . '&product_id=' . $this->request->get['product_id']),

I also tried to place this after the breadcrumb in product.tpl like <a href="<?php echo $breadcrumb['href2']; ?>"

So this is working slightly - I just need to do the PHP replace or something better on the product page to point to the external domain.

Answer 1

Rather than modifying the core PHP. You can do this easily inside your product.tpl file instead.

1 - Open /catalog/view/theme/default/product.tpl

2 - Add your link

<a href="http://example.com/index.php?route=product/product&product_id=<?php echo $this->request->get["product_id"]; ?>">Your Link</a>

What I am doing here is using $_GET to fetch your ProductID from the HEADER and that saves modifying the controllers.