Magento category redirect cuts off the querystring of an url

Question

we are running a Magento 1.4.2.0 Webshop with google analytics. As we all know google attaches a querystring called the \"gclid-Param\" to the url.

The customer clicks t

Answer 1

After some more deep research inside the chaos of magento we found the solution to solve our Problem.

In the Url-Model of the Mage_Core exists a class rewrite.php. We created a custom model and overwrited the rewrite.php.

Inside of the function rewrite(), we added the following piece(marked as comments) of code:

//$url_params = false;
//if ($url_params = $_SERVER['QUERY_STRING'])
//$url_params = "?".$url_params;

if ($external === 'http:/' || $external === 'https:') 
{
    if ($isPermanentRedirectOption) 
    {
        header('HTTP/1.1 301 Moved Permanently');
    }

    header("Location: ".$this->getTargetPath() //.$url_params);
    exit;
} 
else 
{
    $targetUrl = $request->getBaseUrl(). '/' . $this->getTargetPath();
}
$isRedirectOption = $this->hasOption('R');
if ($isRedirectOption || $isPermanentRedirectOption)
{
    if (Mage::getStoreConfig('web/url/use_store') && $storeCode =    
    Mage::app()->getStore()->getCode()) 
    {
        $targetUrl = $request->getBaseUrl(). '/' . $storeCode . '/'  
        .$this->getTargetPath();
    }
    if ($isPermanentRedirectOption)
    {
         header('HTTP/1.1 301 Moved Permanently');
    }
    header('Location: '.$targetUrl //.$url_params);
    exit;
}

So i hope our solution helps others, who are facing the same problem.

Best regards Markus