Magento 1.9 – Single Product with Multiple Add to Cart

So to add products to cart programmatically is fairly simple you just need to product object and the cart session.

$quote = Mage::getSingleton('checkout/session')->getQuote();
$quote->addProduct($product, $qty);

$quote->collectTotals()->save();

This because a bit more difficult when adding configurable or products with options but all you need to do is load the product object with the right options.

Now what you need to do is pass an array instead of $qty and this array should be formatted in a different way depending on what type of product you are adding.

See the following for more information:

• Bundle
• Options or configurable product

I managed to figure it out in the end - looks like it is using parts of the Magento request internally when adding to the cart - I didn't get this straight away as I coincidently used the same names for my fields as Mage was expecting.

Once I re-named my own super_attribute field and then re-set the request in the loop, it worked. The resulting code was:

public function indexAction ()
{

   $post = $this->getRequest()->getPost();

   $attr = array_keys($post['sa']);

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



    foreach ($post['sa'][$attr[0]] as $optId){

        if (abs($post['qty'][$optId]) > 0){
            $product = Mage::getModel('catalog/product')->load($post['product']);
            $this->getRequest()->setParam('product',$post['product']);
            $this->getRequest()->setParam('super_attribute',array(
                    $attr[0] => $optId
                ));
            $options = array(
                //"product"=>$post['product'], 
                "super_attribute"=>array(
                    $attr[0] => $optId
                ),                    
                "qty"=>$post['qty'][$optId]
            ); 


            $cart->addProduct($product, $options);
            $cart->save();
            $cart = Mage::getSingleton('checkout/cart');
            $cart->init();

            $pdts = $cart->getItems();
        }


    }

    $cart->save(); // save the cart
    Mage::getSingleton('checkout/session')->setCartWasUpdated(true); 



$this->_redirect('checkout/cart/'); 

}