web services edit

[Bumbe86]

Buonasera, 

Sto creando una webService per aggiornare i prodotti dello store.

 

Ho seguito la guida http://doc.prestashop.com/display/PS14/Chapter+5+-+Modification+-+Update+client

 

 

$webService = new PrestaShopWebservice('http://miodominio/shop' 'valueKey', true);

    try {

   

        // Define the resource

        $opt = array( 'resource' => 'products' );

        // Define the resource id to modify

        $opt[ 'id' ] = 2;

        // Call the web service, recuperate the XML file

        $xml = $webService->get( $opt );

        // Recuperate resource elements in a variable (table)

        $resources = $xml->children()->children();

 

            foreach ( $resources as $nodeKey => $node ) {

                if($nodeKey=='price'){

                    $resources->$nodeKey = '330';

                }

        }

 

        $opt = array( 'resource' => 'products' ); // Resource definition

        $opt[ 'putXml' ] = $xml->asXML(); //XML file definition

        $opt[ 'id' ] = 2; // Definition of ID to modify

// Calling asXML () returns a string corresponding to the file

        $xml = $webService->edit( $opt ); // Call

 

    }

    catch (PrestaShopWebserviceException $ex) {

    // Shows a message related to the error

    echo 'Other error: <br />' . $ex->getMessage();

    }

 

Mi viene mostrato questo messaggio di errore "Other error: 

This call to PrestaShop Web Services failed and returned an HTTP status of 400. That means: Bad Request."

Qualcuno può aiutarmi grazie.