Magento related products

Question

I'm trying to make a function that return all related product of a product, using the productId

So I make this in /var/www/website/api/catalog/get_collection.php :

require_once dirname(__FILE__).'/../app/Init.php';

$task = new Init(__FILE__);
        > try {
        > 
        >         $client = $task->getSOAPClient();
        >         $session = $task->getSOAPSession($client);
        > 
        >         $productId = $_GET['productId'];
        >         $productId = (string)$productId;
        >         $result = $client->call($session, 'catalog_product_link.list', array('type' => 'related', 'product' => $productId));  
        >         var_dump ($result);
              } 
        catch(Exception $e) {
        >     $task->errorResponse($e->getMessage()); 
              }

I call this "get_collection.php" file from my google chrome with this line :

http://magento.dev.website.com/api/catalog/get_collection.php?productId=557

And this is the result I get :

{ error: "Product not exists." }

I try to replace $productId in the array of argument by the value of the productId, but still the same error.

Please, help me >.< Oh, it's on Magento 1.8.0, if this can help someone helping me ^^

Answer 1

I assume you use SOAP v2. As written in the comments, there is no file App/Init.php, so I have no idea what you are trying to do. The documentation of the SOAP API is rather good. This page explains how to get the related products. Something like this should work:

$proxy = new SoapClient('http://magentohost/api/v2_soap/?wsdl');
$sessionId = $proxy->login('apiUser', 'apiKey');
$result = $proxy->catalogProductLinkList($sessionId, 'related', $productId);
var_dump($result);

Make sure that you configure Magento correctly. You can have a look at this Inchoo article for a reference.