使用您的实际代码，您需要设置 2 个状态数组，一个受限制，一个已完成。我们还需要检查产品 ID 为 581 和/或 590 的购物车项目。如果其中一个产品在购物车中，我们设置受限状态数组，否则设置完整状态数组。
代码：
add_filter( 'woocommerce_states', 'wc_ie_counties_add_counties' );
function wc_ie_counties_add_counties( $states ) {
// HERE your product IDS
$products_ids = array( 581, 590 );
$cart = WC()->cart; // The Cart object
$found = false;
$states_partial = array(
'Carlow' => 'Carlow',
'Cavan' => 'Cavan',
'Dublin' => 'Dublin'
);
$states_complete = array(
'Carlow' => 'Carlow',
'Cavan' => 'Cavan',
'Clare' => 'Clare',
'Cork' => 'Cork',
'Donegal' => 'Donegal',
'Dublin' => 'Dublin',
'Galway' => 'Galway',
'Kerry' => 'Kerry',
'Kildare' => 'Kildare',
'Kilkenny' => 'Kilkenny',
'Laois' => 'Laois',
'Leitrim' => 'Leitrim',
'Limerick' => 'Limerick',
'Longford' => 'Longford',
'Louth' => 'Louth',
'Mayo' => 'Mayo',
'Meath' => 'Meath',
'Monaghan' => 'Monaghan',
'Offaly' => 'Offaly',
'Roscommon' => 'Roscommon',
'Sligo' => 'Sligo',
'Tipperary' => 'Tipperary',
'Waterford' => 'Waterford',
'Westmeath' => 'Westmeath',
'Wexford' => 'Wexford',
'Wicklow' => 'Wicklow'
);
// Checking cart items
foreach( $cart->get_cart() as $cart_item ) {
if( in_array( $cart_item['product_id'], $products_ids ) ){
$found = true;
break;
}
}
$states['IE'] = $found ? $states_partial : $states_complete;
return $states;
}
代码进入活动子主题（或活动主题）的 function.php 文件中。
它应该可以工作......
与产品类别而不是产品 ID 相同（基于作者的代码）：
add_action('woocommerce_states', 'my_check_category_in_cart');
function my_check_category_in_cart( $states ) {
// HERE your product categories
$products_categories = array( 'baths','curved-radiators','cabinets','mirrors','sinks',
'storage-units','toilets','vanity-units','column-radiators','curved-radiators',
'designer-radiators','flat-panel-radiators','heated-towel-radiators');
$is_in_cart = false;
// Loop through all products in the Cart
foreach ( WC()->cart->get_cart() as $cart_item ) {
// Check for product categories
if ( has_term( $products_categories, 'product_cat', $cart_item['product_id'] ) ) {
$is_in_cart = true;
break;
}
}
if ( $is_in_cart ) {
$states['IE'] = array(
'Carlow' => 'Carlow',
'Dublin' => 'Dublin',
'Kildare' => 'Kildare',
'Kilkenny' => 'Kilkenny',
'Laois' => 'Laois',
'Longford' => 'Longford',
'Louth' => 'Louth',
'Meath' => 'Meath',
'Offaly' => 'Offaly',
'Westmeath' => 'Westmeath',
'Wexford' => 'Wexford',
'Wicklow' => 'Wicklow'
);
// Display a custom notice
if( is_checkout() && WC()->customer->get_billing_country() == 'IE' )
wc_add_notice( 'One of the products below can only be delivered inside Leinster area', 'notice' );
} else {
$states['IE'] = array(
'Carlow' => 'Carlow',
'Cavan' => 'Cavan',
'Clare' => 'Clare',
'Cork' => 'Cork',
'Donegal' => 'Donegal',
'Dublin' => 'Dublin',
'Galway' => 'Galway',
'Kerry' => 'Kerry',
'Kildare' => 'Kildare',
'Kilkenny' => 'Kilkenny',
'Laois' => 'Laois',
'Leitrim' => 'Leitrim',
'Limerick' => 'Limerick',
'Longford' => 'Longford',
'Louth' => 'Louth',
'Mayo' => 'Mayo',
'Meath' => 'Meath',
'Monaghan' => 'Monaghan',
'Offaly' => 'Offaly',
'Roscommon' => 'Roscommon',
'Sligo' => 'Sligo',
'Tipperary' => 'Tipperary',
'Waterford' => 'Waterford',
'Westmeath' => 'Westmeath',
'Wexford' => 'Wexford',
'Wicklow' => 'Wicklow'
);
}
return $states;
}
代码进入活动子主题（或活动主题）的 function.php 文件中。
现在它应该也适用于产品变体（在可变产品上）。