Prestashop module ProductComments - prestashop

Question

I am trying to adapt the Product Comments "add a review feature" (which is on the Product page) to work on the Products List page, but the link is only recognizing the first product in the list. There is a pencil icon link next to each product in the list, but they all link to the first product only.
Can anybody let me know why this is happening, and point me in the right direction to fixing it.
Following is the code in my custom hook:
include_once dirname(__FILE__).'/ProductComment.php';
include_once dirname(__FILE__).'/ProductCommentCriterion.php';
if(in_array($this->context->controller->php_self, array('product-list'))) $products = Product::getProducts((int) Tools::getValue('id_product'), $this->context->language->id);
{
$id_guest = (!$id_customer = (int) $this->context->cookie->id_customer) ? (int) $this->context->cookie->id_guest : false;
$customerComment = ProductComment::getByCustomer((int) (Tools::getValue('id_product')), (int) $this->context->cookie->id_customer, true, (int) $id_guest);
$average = ProductComment::getAverageGrade((int) Tools::getValue('id_product'));
$image = Product::getCover((int) Tools::getValue('id_product'));
$cover_image = $this->context->link->getImageLink($product->link_rewrite, $image['id_image'], 'medium_default');
$this->context->smarty->assign(array(
'id_product_comment_form' => (int) Tools::getValue('id_product'),
'product' => $products,
'secure_key' => $this->secure_key,
'logged' => $this->context->customer->isLogged(true),
'allow_guests' => (int) Configuration::get('PRODUCT_COMMENTS_ALLOW_GUESTS'),
'productcomment_cover' => (int) Tools::getValue('id_product').'-'.(int) $image['id_image'], // retro compat
'productcomment_cover_image' => $cover_image,
'mediumSize' => Image::getSize(ImageType::getFormatedName('medium')),
'criterions' => ProductCommentCriterion::getByProduct((int) Tools::getValue('id_product'), $this->context->language->id),
'action_url' => '',
'averageTotal' => round($average['grade']),
'ratings' => ProductComment::getRatings((int) Tools::getValue('id_product')),
'too_early' => ($customerComment && (strtotime($customerComment['date_add']) + Configuration::get('PRODUCT_COMMENTS_MINIMAL_TIME')) > time()),
'nbComments' => (int) (ProductComment::getCommentNumber((int) Tools::getValue('id_product'))),
));
return $this->display(__FILE__, '/mytemplate.tpl');
}
This is the code in my template:
<SCRIPT>
$(document).ready(function() {
if (!!$.prototype.fancybox)
$('.open-comment-form').fancybox({
'autoSize' : false,
'width': 800,
'height': auto,
'hideOnContentClick': false,
'title' : null,
});
});
</SCRIPT>
{if (!$too_early AND ($is_logged OR ($PRODUCT_COMMENTS_ALLOW_GUESTS == 0)))}
<p class="align_center">
<a class="open-comment-form" href="#new_comment_form" title="{l s='Write your review' mod='productcomments'}!"></a>
</p>
{/if}
I am using Prestashop version 1.6.1.14. Thanks aussiecomet