Woocommerce remove free_gift from cart item count - php

Question

I have a function which sets a maximum order quantity of items in cart to 16. So user cannot checkout with more than 16 items.
I am also running a plugin which adds a free_gift key to the $cart_item array when a coupon is added.
The problem is that when a user adds 16 items + free_gift = the total is 17 items which prevents checkout.
How can I remove the free_gift from being added to the cart item count?
Example:
Make Woocommerce cart think that 16 items + 1 free_gift = 16 items
Make Woocommerce cart think that 12 items + 1 free_gift = 12 items
My code so far, which allows free_gifts to be added over the max 16 limit, but does not apply the max rule of 16 items:
// Set a maximum number of products requirement before checking out
add_action( 'woocommerce_check_cart_items', 'spyr_set_max_num_products' );
function spyr_set_max_num_products() {
// Only run in the Cart or Checkout pages
if( is_cart() || is_checkout() ) {
$cart_num_products = 0;
foreach ( WC()->cart->cart_contents as $cart_item_key => $cart_item ) {
// HERE I AM TRYING TO SKIP AND PREVENT CART ITEMS OF FREE_GIFTS BEING COUNTED
if ( isset( $cart_item['free_gift'] ) ) {
continue;
}
// Count for regular products.
$cart_num_products++;
}
// Set the maximum number of products before checking out
$maximum_num_products = 16;
// Compare values and add an error is Cart's total number of products
// happens to be less than the minimum required before checking out.
// Will display a message along the lines of
// A Maximum of 16 products is allowed before checking out. (Cont. below)
if( $cart_num_products > $maximum_num_products ) {
// Display our error message
wc_add_notice( sprintf( '<strong>A Maximum of %s snacks are allowed per order.</strong>'
. '<br />Current number of snacks: %s.',
$maximum_num_products,
$cart_num_products ),
'error' );
}
}
}

Answer 1

Try the following, that will remove your custom free item from cart items count:
add_action( 'woocommerce_check_cart_items', 'max_allowed_cart_items' );
function max_allowed_cart_items() {
// Only run in the Cart or Checkout pages
if( is_cart() || is_checkout() ) {
// Set the maximum number of products before checking out
$max_items_count = 16;
$cart_items_count = WC()->cart->get_cart_contents_count( );
foreach ( WC()->cart->get_cart() as $cart_item ) {
if ( isset( $cart_item['free_gift'] ) ) {
$cart_items_count -= $cart_item['quantity'];
}
}
if( $cart_items_count > $max_items_count ) {
// Display our error message
wc_add_notice( sprintf( '<strong>A Maximum of %s snacks are allowed per order.</strong>'
. '<br />Current number of snacks: %s.',
$max_items_count,
$cart_items_count ),
'error' );
}
}
}
Code goes in function.php file of your active child theme (or active theme). It should works.

Answer 2

First check if the free item is in the cart. When it is you count the items "-1" in your function before the checkout is accessable.
function free_product_in_cart($free_product_id) {
$free_product_cart_id = WC()->cart->generate_cart_id( $free_product_id );
return WC()->cart->find_product_in_cart( $free_product_cart_id ); //Return true when the free product is in the cart
}
So then you update your logic to check:
if(free_product_in_cart(your product id) {
$free_item_space = 1;
} else {
$free_item_space = 0;
}
if( $cart_num_products > $maximum_num_products + $free_item_space) {
// Display our error message
wc_add_notice( sprintf( '<strong>A Maximum of %s snacks are allowed per order.</strong>'
. '<br />Current number of snacks: %s.',
$maximum_num_products,
$cart_num_products ),
'error' );
}