HOW TO: Automatically add FREE GIFT to WooCommerce cart
tl:dr; On my own digital art store, I wanted to automatically add a free product to the cart with every purchase over £20. Here's how I did it. 3 min readOn my own digital art store, I wanted to add a free set of postcards for every purchase over £20.
There’s different ways I could set this up, via a plugin or manually, using a coupon or simply run it automatically.
Plugins cost and of course, need maintaining etc, adding a coupon was OK, but then the customer has to do some manual work.
I wanted to make the journey simple and automatic.
I found the easiest way to achieve this was to create the FREE product and then use a function to automatically add said product to the cart.
Here’s how to achieve this using WooCommerce or ClassicCommerce:
PLEASE NOTE: ALWAYS BACK-UP EVERYTHING BEFORE TESTING AND USE A DEVELOPMENT SERVER, NEVER A LIVE SITE
First create your FREE product:
Make sure you set ‘Catalog visibility: Hidden‘ otherwise the product will be listed in your shop as normal.
Also, check ‘Sold individually’ otherwise anyone can claim as many as they want!
Once the product is set up, take a note of the product ID – this can be found in the edit page URL:
Next, add this code to your theme functions.php:
// Add free gifted product for specific cart subtotal
add_action( 'woocommerce_before_calculate_totals', 'check_free_gifted_product' );
function check_free_gifted_product( $cart ) {
if ( is_admin() && ! defined( 'DOING_AJAX' ) )
return;
// Settings
$free_product_id = 1189; // CHANGE THIS TO YOUR PRODUCT ID
$targeted_subtotal = 20; // CHANGE THIS TO THE REQUIRED LOWEST CART TOTAL
$cart_subtotal = 0; // Initializing
// Loop through cart items (first loop)
foreach ( $cart->get_cart() as $cart_item_key => $cart_item ){
// When free product is is cart
if ( $free_product_id == $cart_item['product_id'] ) {
$free_key = $cart_item_key;
$free_qty = $cart_item['quantity'];
$cart_item['data']->set_price(0); // Optionally set the price to zero
} else {
$cart_subtotal += $cart_item['line_total'] + $cart_item['line_tax'];
}
}
// If subtotal match and free product is not already in cart, add it
if ( ! isset($free_key) && $cart_subtotal >= $targeted_subtotal ) {
$cart->add_to_cart( $free_product_id );
}
// If subtotal doesn't match and free product is already in cart, remove it
elseif ( isset($free_key) && $cart_subtotal < $targeted_subtotal ) {
$cart->remove_cart_item( $free_key );
}
// Keep free product quantity to 1.
elseif ( isset($free_qty) && $free_qty > 1 ) {
$cart->set_quantity( $free_key, 1 );
}
}
// Display free gifted product price to zero on minicart
add_filter( 'woocommerce_cart_item_price', 'change_minicart_free_gifted_item_price', 10, 3 );
function change_minicart_free_gifted_item_price( $price_html, $cart_item, $cart_item_key ) {
$free_product_id = 1189; // CHANGE THIS TO YOUR PRODUCT ID
if( $cart_item['product_id'] == $free_product_id ) {
return wc_price( 0 );
}
return $price_html;
}
Finally test the code by adding something to your cart ensuring the minimum cart total is reached and watch the FREE product get added automatically.
If you’re looking to set yourself up with an ecommerce store or just need help and advise on maximising your online presence get in touch today.
