I had to do some custom validation during an add to cart process. If the process needs to be stopped I try to do a wc_add_notice to notify the customer I stopped them from adding the item to the cart. The function does successfully do what it is supposed to but the notices do not appear.
function check_for_samples( $passed, $product_id, $quantity ) {
global $woocommerce;
if(has_term( 8484, 'product_cat', $product_id )) {
if($quantity > 4) {
wc_add_notice('Sorry You can only order up to 4 of sample SKU.', 'error' );
$passed = false;
} else {
$total_sample_count = 0;
$total_this_sample_count = 0;
foreach( WC()->cart->get_cart() as $cart_item ) {
if(has_term( 8484, 'product_cat', $cart_item['product_id'] )) {
if($product_id == $cart_item['product_id']) {
$total_this_sample_count = $cart_item['quantity'];
$total_sample_count += $cart_item['quantity'];
} else {
$total_sample_count += $cart_item['quantity'];
}
}
}
if($total_this_sample_count + $quantity > 4) {
wc_add_notice('Sorry You can only order up to 4 of sample SKU.', 'error' );
$passed = false;
} else if( $total_sample_count + $quantity > 6 ) {
wc_add_notice('Sorry You can only order up to 6 samples.', 'error' );
$passed = false;
}
}
}
wc_print_notices();
return $passed;
}
add_filter( 'woocommerce_add_to_cart_validation', 'check_for_samples', 10, 3 );
.
