Remove or manipulate parameters in controller

Question

I am trying to remove a parameter under certain conditions when it is passed to my controller. The var_dump of the request contains all the parameters. The parameter I want to remove is called super_attribute. Let's take a look at that var_dump shall we?

[product] => 10
[form_key] => XXYY
[related_product] => 
[super_attribute] => Array
    (
        [220] => 1141
    )

I am able to set the product parameter to another figure using:

$this->getRequest()->setParam('product', $product->getId());

However, I would like to know a way to altogether remove the super attribute or null it's array, heck, or even just change the values contained within! For starters:

$this->getRequest()->setparam('super_attribute', null);

nor

$params = $this->getRequest()->getParams();
unset($params['super_attribute']);

hold any water.

Answer 1

Look how method Zend_Controller_Request_Http::getParams works:

public function getParams()
{
    $return       = $this->_params;
    $paramSources = $this->getParamSources();
    if (in_array('_GET', $paramSources)
        && isset($_GET)
        && is_array($_GET)
    ) {
        $return += $_GET;
    }
    if (in_array('_POST', $paramSources)
        && isset($_POST)
        && is_array($_POST)
    ) {
        $return += $_POST;
    }
    return $return;
}

It all time gets parameters from global array and doesn't store it in class properties.

So there are two options you have:

• change $_POST strictly (eg if (isset($_POST['super_attribute'])) { unset($_POST['super_attribute']); } ).
• or you can use $this->getRequest()->setPostValue('super_attribute', null). In that case key super_attribute wont be removed from $_POST array, but will be modified.