Prestashop - Product images not showing in category loop with friendly URLs - loops

Question

My product images don't show in categories after turning on friendly URLs. If I turn it off, they appear again.
I have tried :
Re-generating pictures in the back-office
Turning off cache
When I inspect the code with frienly URLs on, image links show in a weird format : https://www.website.fr/3689-home_default/.jpg
Prestashop 1.6
EDIT :
It appears the problem comes from the way I query products in my custom category TPL. I am querying products from subcategories manually (i am not displaying all products of the category at once) like this :
{foreach from=$subcategories item=subcategory}
{if $subcategory.id_category == 64659}
{assign var="subcategory_id" value=$subcategory.id_category}
{assign var="subcategory_object" value=$subcategories_objects.$subcategory_id}
{include file="./product-list.tpl" products=$subcategory_object->getProducts('1','1','100','price','asc')}
{/if}
{/foreach}
When I query products with the following line, images appear as normal :
{include file="./product-list.tpl" products=$products}
In the product-list.tpl, this is the line which gets the image :
src="{$link->getImageLink($product.link_rewrite, $product.id_image, 'home_default')|escape:'html':'UTF-8'}"
Thank you.

Answer 1

By default you will get array of subcategories only in $subcategories variable; so getting products of that sub category will never work $subcategory_object->getProducts('1','1','100','price','asc') until and unless you do have sub category object.
First you need to get sub category object and for that you need to override default function getSubCategories from classes/Category.php file by making override of Category class.
Follow below mentioned steps(1-2) to create override class and modify code in template mentioned in step(3)
1) Make file Category.php on path override\classes and add below code in it.
this will override default function to get category.
<?php
/**
* #override classes/Category.php
*
*/
class Category extends CategoryCore
{
/**
* #override
* Return current category childs
*
* #param int $id_lang Language ID
* #param bool $active return only active categories
* #return array Categories
*/
public function getSubCategories($id_lang, $active = true)
{
$result = parent::getSubCategories($id_lang, $active);
foreach ($result as &$row) {
// Preapre object of sub category here
$row['object'] = new Category($row['id_category'], $id_lang);
}
return $result;
}
}
2) Delete file class_index.php from cache folder.
Your override function is ready now.
3) Add below code to your template to show products
{foreach from=$subcategories item=subcategory}
{if $subcategory.id_category == 64659}
{include file="./product-list.tpl" products=$subcategory.object->getProducts('1','1','100','price','asc')}
{/if}
{/foreach}
Hope this will work for you.