Modificar plantilla de productos relacionados

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Virtuemart 1.1.9
joomla 1.5.25
MVC no lo conozco.

Me defiendo en php (pero no tanto).

Por lo que he investidago dentro de joomla hay que modificar el ps_product.php (diria)

El archivo que llama al mostrar productos relacionados es el realtedProducts.tpl.php, y en el vemos que lo unico que hace es llamar a una funcion que se encuentra en el ps_product.php

Te pongo el codigo aqui:

Código:

	/**
	 * display a snapshot of a product based on the product sku.
	 * This was written to provide a quick way to display a product inside of modules
	 *
	 * @param string $product_sku The SKU identifying the product
	 * @param boolean $show_price Show the product price?
	 * @param boolean $show_addtocart Show the add-to-cart link?
	 * @param boolean $show_product_name Show the product name?
	 */
	function show_snapshot($product_sku, $show_price=true, $show_addtocart=true, $show_product_name = true ) {
		echo $this->product_snapshot( $product_sku, $show_price, $show_addtocart, $show_product_name );
	}

	/**
	 * Returns HTML code for a snapshot of a product based on the product sku.
	 * This was written to provide a quick way to display a product inside of modules
	 *
	 * @param string $product_sku The SKU identifying the product
	 * @param boolean $show_price Show the product price?
	 * @param boolean $show_addtocart Show the add-to-cart link?
	 * @param boolean $show_product_name Show the product name?
	 */
	function product_snapshot( $product_sku, $show_price=true, $show_addtocart=true, $show_product_name = true ) {

		global $sess, $mm_action_url;

		$db = new ps_DB;

		require_once(CLASSPATH.'ps_product_category.php');
		$ps_product_category = new ps_product_category;

		$q = "SELECT product_id, product_name, product_first_image, product_parent_id, product_thumb_image FROM #__{vm}_product WHERE product_sku='$product_sku'";
		$db->query( $q );

		if ($db->next_record()) {
			$product_id = $db->f("product_id" );
			$tpl = new $GLOBALS['VM_THEMECLASS']();
			
			$cid = $ps_product_category->get_cid( $product_id );

			$tpl->set( 'product_id', $product_id);
			$tpl->set( 'product_name', $db->f("product_name") );
			$tpl->set( 'show_product_name', $show_product_name );
			
			if ($db->f("product_parent_id")) {
				$url = "?page=shop.product_details&category_id=$cid&flypage=".$this->get_flypage($db->f("product_parent_id"));
				$url .= "&product_id=" . $db->f("product_parent_id");
			} else {
				$url = "?page=shop.product_details&category_id=$cid&flypage=".$this->get_flypage($db->f("product_id"));
				$url .= "&product_id=" . $db->f("product_id");
			}
			$product_link = $sess->url($mm_action_url. "index.php" . $url);
			$tpl->set( 'product_link', $product_link );
			$tpl->set( 'product_thumb_image', $db->f("product_thumb_image"), "alt=\"".$db->f("product_name")."\"");
			$tpl->set( 'product_first_image', $db->f("product_first_image"), "alt=\"".$db->f("product_name")."\"");

			if (_SHOW_PRICES == '1' && $show_price) {
				// Show price, but without "including X% tax"
				$price = $this->show_price( $db->f("product_id"), true );
				$tpl->set( 'price', $price );
			}
			if (USE_AS_CATALOGUE != 1 && $show_addtocart 
					&& isset( $GLOBALS['product_info'][$product_id]['price']['product_price_id'] ) // Product must have a price to add it to cart
					&& !$this->product_has_attributes($product_id, true)  // Parent Products and Products with attributes can't be added to cart this way
					) {
				$url = "?page=shop.cart&func=cartAdd&product_id=" .  $db->f("product_id");
				$addtocart_link = $sess->url($mm_action_url. "index.php" . $url);
				$tpl->set( 'addtocart_link', $addtocart_link );
			}
			return $tpl->fetch( 'common/productsnapshot.tpl.php');
		}
		
		return '';
		
	}

diria que esta parte hay que modificarla para poder mostrar la categoria