Opencart2.1 how to display all products of this category in the product card?

Question

PHP

Good afternoon, tell me how to display in the product card all products from the category in which this product is located?

Answer 1

$filter_data = array(
  filter_category_id' => $category_id
);
$results = $this->model_catalog_product->getProducts($filter_data);

And the rest by analogy with the recommended products