PHP Add products to cart with WooCommerce Addons

Question

I'm trying to add products to the cart programmatically but with addons from WooCommerce Product Addons. I'm not finding anything in their documentation and am struggling to find anything in their code that seems to do it.

Answer 1

The WooCommerce Cart add_to_cart function takes a parameter for cart_item_data. To make this work, you simply need to pass the addon data to add_to_cart. Something like this:

$addons = array(
    array(
        "name" => "Size",
        "value" => "2.5x7",
        "price" => 0,
        "field_name" => "5186-0",
        "field_type" => "multiple_choice",
        "id" => "1683555538",
        "price_type" => "flat_fee"
    ),                
    array(
        "name" => "Medium",
        "value" => "Print",
        "price" => 0,
        "field_name" => "5186-1", // {product_id}-{addon_index}
        "field_type" => "multiple_choice",
        "id" => "1683555539",
        "price_type" => "flat_fee"
    )
);
$product_id = 11;
$quantity = 1;
$variation_id = null;
$variation = null;
$cart_item_data = array('addons' => $addons);

WC()->cart->add_to_cart($product_id, $quantity, $variation_id, $variation, $cart_item_data);