I'm operating a WooCommerce shop, where we'd like to give every customer a freebie (e-book) that will show in the basket, after you have added a product to the basket obvious.
Example:
You add "product1" to the basket, and the basket will now show 2 products. the "product1" and the "freebie".
When you remove the product from the basket, the freebie will be removed again.
I got this code for now:
add_action( 'woocommerce_add_to_cart', 'check_freebie_exists', 10, 6 );
function check_freebie_exists($cart_item_key, $product_id, $quantity, $variation_id, $variation, $cart_item_data) {
if($product_id == 1234) { // obviously replace this with the product that triggers the freebie
/* or you could use
if(has_term($cat_id, 'product_cat', $product_id)) { to check if a product is in a particular product_cat
or you could check anything else related to the product
*/
$hasfreebie = false;
// loop through the cart to check the freebie is not already there
global $woocommerce;
$cart = $woocommerce->cart->get_cart();
foreach($cart as $key => $values) {
if($values['data']->id == $your_freebie_product_id) {
$hasfreebie = true;
break;
}
}
if(!$hasfreebie) {
$woocommerce->cart->add_to_cart($your_freebie_product_id);
}
}
}
add_action( 'woocommerce_cart_item_removed', 'remove_freebie', 10, 2 );
function remove_freebie( $cart_item_key, $cart ) {
$hasmaster = false;
$freebiekey = NULL;
foreach($cart as $key => $values) {
if($values['data']->id == 1234) { // check that we have the product that should trigger the freebie
$hasmaster = true;
} elseif($values['data']->id == $your_freebie_product_id) {
$freebiekey = $key;
}
}
if(!$hasmaster && $freebiekey) {
$cart->remove_cart_item($freebiekey);
}
}
But it doesn't seem to be working quite yet.
What I am doing wrong?
Any help will be really appreciated.
Update 2 - October 2018 - Improved and enhanced code (Completely revisited)
The following code will add a freebie product on first add to cart just once. If all other cart items are removed, the freebie item will be removed too:
add_action( 'woocommerce_before_calculate_totals', 'add_remove_freebie', 50, 1 );
function add_remove_freebie( $cart ) {
if ( is_admin() && ! defined( 'DOING_AJAX' ) )
return;
if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 )
return;
$freebie_id = 70; // <== HERE set the freebie product ID
$has_others = false;
// Loop through cart items
foreach( $cart->get_cart() as $cart_item_key => $cart_item ) {
// Added Woocommerce compatibility version
$product_id = version_compare( WC_VERSION, '3.0', '<' ) ? $cart_item['data']->id : $cart_item['data']->get_id();
if( $product_id == $freebie_id ) {
// Freebie is in cart
$freebie_key = $cart_item_key;
} else {
// Other items are in cart
$has_others = true;
}
}
// If freebie product is alone in cart we remove it
if( ! $has_others && isset( $freebie_key ) ){
$cart->remove_cart_item( $freebie_key );
} elseif ( $has_others && ! isset( $freebie_key ) ) {
$cart->add_to_cart($freebie_id);
}
}
Code goes in function.php file of your active child theme (or active theme). Tested and works.
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