I can add a product to cart, when a certain coupon is used via the woocommerce_applied_coupon
hook and the add_to_cart()
function
add_action('woocommerce_applied_coupon', 'apply_product_on_coupon');
function apply_product_on_coupon( ) {
global $woocommerce;
$coupon_id = 'mybday';
$free_product_id = 131468;
if(in_array($coupon_id, $woocommerce->cart->get_applied_coupons())){
$woocommerce->cart->add_to_cart($free_product_id, 1);
}
}
My question: is there a way to also discount it to 0 in the same callback function?
CodePudding user response:
Your current code contains some mistakes or could be optimized:
global $woocommerce
can be replaced byWC()
$woocommerce->cart->get_applied_coupons()
is not necessary, as the coupon that have been applied is passed to the callback function.
Instead, use the last available argument in WC_Cart::add_to_cart() method, which will allow you to add any custom cart item data. Then you will be able to get that data easily from the cart object.
So you get:
function action_woocommerce_applied_coupon( $coupon_code ) {
// Settings
$product_id = 131468;
$quantity = 1;
$free_price = 0;
$coupon_codes = array( 'coupon1', 'mybday' );
// Compare
if ( in_array( $coupon_code, $coupon_codes ) ) {
// Add product to cart
WC()->cart->add_to_cart( $product_id, $quantity, 0, array(), array( 'free_price' => $free_price ) );
}
}
add_action( 'woocommerce_applied_coupon', 'action_woocommerce_applied_coupon', 10, 1 );
// Set free price from custom cart item data
function action_woocommerce_before_calculate_totals( $cart ) {
if ( is_admin() && ! defined( 'DOING_AJAX' ) ) return;
if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 ) return;
// Loop through cart contents
foreach ( $cart->get_cart_contents() as $cart_item ) {
if ( isset( $cart_item['free_price'] ) ) {
$cart_item['data']->set_price( $cart_item['free_price'] );
}
}
}
add_action( 'woocommerce_before_calculate_totals', 'action_woocommerce_before_calculate_totals', 10, 1 );
Note: in addition to using woocommerce_applied_coupon
, you must also use woocommerce_removed_coupon
for when the coupon is removed, the product is removed as well
function action_woocommerce_removed_coupon( $coupon_code ) {
// Settings
$product_id = 131468;
$coupon_codes = array( 'coupon1', 'mybday' );
// Compare
if ( in_array( $coupon_code, $coupon_codes ) ) {
// Loop through cart contents
foreach ( WC()->cart->get_cart_contents() as $cart_item_key => $cart_item ) {
// When product in cart
if ( $cart_item['product_id'] == $product_id ) {
// Remove cart item
WC()->cart->remove_cart_item( $cart_item_key );
break;
}
}
}
}
add_action( 'woocommerce_removed_coupon', 'action_woocommerce_removed_coupon', 10, 1 );