我正在为一家非营利组织工作，人们可以从他们那里订购信息小册子。小册子可以单独订购，也可以打包订购。该产品包已设置为ID为 1076 的一种产品。
当客户订购包装时，他们只能自己订购包装。
我将代码清除购物车中的所有其他产品，并在将包装添加到购物车时仅留下包装。然后，当包装在购物车中时，它将禁用所有产品的“添加到购物车”按钮。最后，当人们单击灰色的“添加到购物车”按钮时，它会更改弹出错误消息。
如何确保wc_print_notice()仅在购物车页面中输出一次通知？
这是我到目前为止的代码（它是从多个来源拼凑而成的，因此效率可能很低）
// Remove conditionally cart items based on a specific product (item)
function remove_cart_items_conditionally( $cart ) {
// HERE define your specific product ID
$specific_product_id = 1076;
if ( is_admin() && ! defined( 'DOING_AJAX' ) )
return;
$cart_items = $cart->get_cart(); // Cart items array
$items_count = count($cart_items); // Different cart items count
// Continue if cart has at least 2 different cart items
if ( $items_count < 2 )
return;
$last_item = end($cart_items); // Last cart item data array
$is_last_item = false; // Initializing
// Check if the specific product is the last added item
if ( in_array($specific_product_id, array( $last_item['product_id'], $last_item['variation_id'] ) ) ) {
$is_last_item = true;
}
// Loop through cart items
foreach ( $cart_items as $cart_item_key => $cart_item ) {
// Remove all others cart items when specific product ID is the last added to cart
if ( ! in_array($specific_product_id, array( $cart_item['product_id'], $cart_item['variation_id'] ) ) && $is_last_item ) {
$cart->remove_cart_item( $cart_item_key );
wc_print_notice( 'Individual resources have been removed as the full pack already contains all the resources', 'notice' );
}
}
}
add_action( 'woocommerce_before_calculate_totals', 'remove_cart_items_conditionally', 10, 1 );
// Disable the add to cart button if specified product is in the cart
function disable_add_to_cart_if_product_is_in_cart ( $is_purchasable, $product ){
$specific_product_id = 1076;
// Loop through cart items checking if the product is already in cart
foreach ( WC()->cart->get_cart() as $cart_item ){
if ( in_array($specific_product_id, array( $cart_item['product_id'], $cart_item['variation_id'] ) ) ) {
return false;
}
}
return $is_purchasable;
}
add_filter( 'woocommerce_is_purchasable', 'disable_add_to_cart_if_product_is_in_cart', 10, 2 );
// Change disabled add to cart button popup message to something relevant
function customizing_product_variation_message( $translated_text, $untranslated_text, $domain )
{
if ( in_array($specific_product_id, array( $cart_item['product_id'], $cart_item['variation_id'] ) ) ) {
if ($untranslated_text == 'Sorry, this product is unavailable. Please choose a different combination.') {
$translated_text = __( 'The full pack in the cart already contains this resource', $domain );
}
}
return $translated_text;
}
add_filter( 'gettext', 'customizing_product_variation_message', 10, 3 );
我的代码是通过以下答案线程制作的：
Remove conditionally Woocommerce cart items based on a specific product
Disable Woocommerce add to cart button if the product is already in cart
Customizing product variations message on single product pages
答案 0 :(得分：0)
您正在循环中使用wc_print_notice，因此它将显示与循环计数一样多的时间。为了克服这个问题，请尝试使用以下代码。
替换这段代码。此代码将默认禁用通知调用。只有在执行循环并删除购物车项目时，它才会启用通知呼叫。
// Loop through cart items
foreach ( $cart_items as $cart_item_key => $cart_item ) {
// Remove all others cart items when specific product ID is the last added to cart
if ( ! in_array($specific_product_id, array( $cart_item['product_id'], $cart_item['variation_id'] ) ) && $is_last_item ) {
$cart->remove_cart_item( $cart_item_key );
wc_print_notice( 'Individual resources have been removed as the full pack already contains all the resources', 'notice' );
}
}
通过这段代码，让我知道结果。
// Loop through cart items
$enable_notice = false;
foreach ( $cart_items as $cart_item_key => $cart_item ) {
// Remove all others cart items when specific product ID is the last added to cart
if ( ! in_array($specific_product_id, array( $cart_item['product_id'], $cart_item['variation_id'] ) ) && $is_last_item ) {
$cart->remove_cart_item( $cart_item_key );
$enable_notice = true;
}
}
if($enable_notice){
wc_print_notice( 'Individual resources have been removed as the full pack already contains all the resources', 'notice' );
}
答案 1 :(得分：0)
为避免在woocommerce_before_calculate_totals钩子上出现重复的提示，请尝试以下已更改的钩子函数：
// Remove conditionally cart items based on a specific product (item)
add_action( 'woocommerce_before_calculate_totals', 'remove_cart_items_conditionally', 10, 1 );
function remove_cart_items_conditionally( $cart ) {
if ( ( is_admin() && ! defined( 'DOING_AJAX' ) ) || ! is_user_logged_in() )
return;
// Avoid hook to be triggered twice
if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 )
return;
$specific_product_id = 1076; // <=== HERE define your specific product ID
$cart_items = $cart->get_cart(); // Cart items array
$items_count = count($cart_items); // Different cart items count
// Continue if cart has at least 2 different cart items
if ( $items_count < 2 )
return;
$last_item = end($cart_items); // Last cart item data array
$is_last_item = false; // Initializing
// Check if the specific product is the last added item
if ( in_array($specific_product_id, array( $last_item['product_id'], $last_item['variation_id'] ) ) ) {
$is_last_item = true;
}
// Loop through cart items
foreach ( $cart_items as $cart_item_key => $cart_item ) {
// Remove all others cart items when specific product ID is the last added to cart
if ( ! in_array($specific_product_id, array( $cart_item['product_id'], $cart_item['variation_id'] ) ) && $is_last_item ) {
$cart->remove_cart_item( $cart_item_key );
$message_notice = __('Individual resources have been removed as the full pack already contains all the resources');
}
}
// Conditionally display a custom notice
if( isset( $message_notice ) && ! empty( $message_notice ) ) {
wc_clear_notices(); // Remove previous notices
if( is_cart() ) {
wc_print_notice( $message_notice, 'notice' );
} else {
wc_add_notice( $message_notice, 'notice' );
}
}
}
我已经测试了具有店面主题的代码，并且可以正常工作……购物车页面（不再有迷你购物车中的内容）中不再存在重复的通知。现在，根据您的主题和woocommerce定制，这可能会有不同的行为。