Kdjykuj

I am using the SCP extension so that prices are taken from the simple product and not the configurable.
I am using url approach to add product in the cart

checkout/cart/add?product=10940&qty=1&super_attribute[134]=22

This url adds product into cart but price is taken from first associated product only. same price is rendered in all associated products.

Can you try below code ?

$_product = $this->getProduct();

$parentIds = Mage::getResourceSingleton('catalog/product_type_configurable')->getParentIdsByChild($_product->getId());

// check if something is returned

if (!empty(array_filter($parentIds))) {

    $pid = $parentIds[0];



    // Collect options applicable to the configurable product

    $configurableProduct = Mage::getModel('catalog/product')->load($pid);

    $productAttributeOptions = $configurableProduct->getTypeInstance(true)->getConfigurableAttributesAsArray($configurableProduct);

    $options = array();



    foreach ($productAttributeOptions as $productAttribute) {

        $allValues = array_column($productAttribute['values'], 'value_index');

        $currentProductValue = $_product->getData($productAttribute['attribute_code']);

        if (in_array($currentProductValue, $allValues)) {

            $options[$productAttribute['attribute_id']] = $currentProductValue;

        }

    }



    // Get cart instance

    $cart = Mage::getSingleton('checkout/cart'); 

    $cart->init();

    // Add a product with custom options

    $params = array(

        'product' => $configurableProduct->getId(),

        'qty' => 1,

        'super_attribute' => $options

    );

    $request = new Varien_Object();

    $request->setData($params);

    $cart->addProduct($configurableProduct, $request);

    $session = Mage::getSingleton('customer/session');

    $session->setCartWasUpdated(true);

    $cart->save();

}

Main thing about adding configurable product to cart is what data/options are passed to super_attribute.

For more information please check this out.

Hope this helps.

I had the same challenge. To solve this I created a custom controller which I could call via a URL then placed Vicky Dev's code in the action that I was calling from the URL. It worked for me.