Programatically add bundle product to cart in Magento

Sometimes, clients requirements exceed the defaults built into the Magento. Recently we came across a task that among other things required manipulation of bundle products in Magento. In order to help my coworker Tomas I wrote this little code snippet that programatically adds bundle product to cart.

$params = array(
  'product' => 164,
  'related_product' => null,
  'bundle_option' => array(
      21 => 58,
      20 => 55,
      11 => 28,
      12 => array(
          0 => 31,
      ),
      13 => array(
          0 => 32,
          1 => 35,
      ),
  ),
  'options' => array(
      3 => 'olaaaaaaaa',
  ),
  'qty' => 2,
);

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

$product = new Mage_Catalog_Model_Product();
$product->load(164);

$cart->addProduct($product, $params);
$cart->save();

Mage::getSingleton('checkout/session')->setCartWasUpdated(true);

$message = $this->__('Custom message: %s was successfully added to your shopping cart.', $product->getName());
Mage::getSingleton('checkout/session')->addSuccess($message);

The above source code might need a bit explanation. There are two major things to keep an eye on bundle product view page, custom options and bundle items.

Custom options are set in the array

'options' => array(
  3 => 'olaaaaaaaa',
),

And bundle item options are set in array

'bundle_option' => array(
  21 => 58,
  20 => 55,
  11 => 28,
  12 => array(
      0 => 31,
  ),
  13 => array(
      0 => 32,
      1 => 35,
  ),
),

In summary “all” you need to do is to send the proper field name-values as a params. You can then use this code from within controller or as a fast fix from within view file.