计算 WooCommerce 购物车中的自定义分类术语并将运费乘以数量

Question

我正在尝试进行 WooCommerce 购物车计算，以将运费乘以购物车中不同自定义分类条款的数量。

例如，我的自定义分类 name/slug 是 'city'。如果存在 3 个不同的产品分类术语（例如波士顿、华盛顿和纽约），则当前购物车费率应乘以 3。

这是我当前的代码：

add_filter( 'woocommerce_package_rates', 'funkcija');
function funkcija ( $rates ) {
    $cart = WC()->cart;
// here I define the array where custom taxonomies will be saved in the foreach loop
    $mojarray = array();
    // the foreach loop that iterates through cart items and saves every taxonomy term in the array
    foreach ( $cart->get_cart() as $cart_item_key => $cart_item ) {
        $product_id = $cart_item['product_id'];
       $terms = wp_get_post_terms( $product_id, 'city' );
        $mojarray[] = $terms;
       
    }
//now here the counter is defined, the array is set to contain only unique values of the taxonomies
     $counter = 0;
$noviarray = array_unique($mojarray);
foreach ($noviarray as $value) {
// for each unique taxonomy present in cart, increase the counter by 1
    ++$counter;
    
}
//here the rates totals are taken and multiplied with $counter
   foreach($rates as $key => $rate ) {
        $currenttotal = $rates[$key]->cost;
        $multipliedtotal = $currenttotal * $counter;
        $rates[$key]->cost =  $multipliedtotal;
    }
    
    return $rates;
}

不幸的是，此代码增加了购物车中每个产品的费率。我已经多次查看代码，但不明白为什么它不能按预期用于独特的分类术语。

我相信这可以在具有任何自定义分类法的任何 WooCommerce 商店中进行测试。有什么建议吗？

Answer 1

您的代码有一些错误

不需要使用WC()->cart，因为woocommerce_package_rates钩子包含的不是1个参数而是2个参数，从第二个参数，即$package你可以获取必要的信息
wp_get_post_terms()包含第三个参数，即$args，所以array( 'fields' => 'names' )被添加
由于您目前将此应用于所有 $rates，我在我的答案中添加了一个 if 条件，您可以在其中指定 1 个或多个方法。如果你不想这样，你可以删除 if 条件

所以你得到：

function filter_woocommerce_package_rates( $rates, $package ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) ) return $rates;

    // Initialize
    $counter = 0;
    $my_array = array();

    // Loop through line items
    foreach ( $package['contents'] as $line_item ) {
        // Get product id
        $product_id = $line_item['product_id'];

        // Get terms
        $term_names = wp_get_post_terms( $product_id, 'city', array( 'fields' => 'names' ) );
        
        // Loop through (unique values)
        foreach ( $term_names as $term_name ) {
            // Checks if a value NOT exists in an array
            if ( ! in_array( $term_name, $my_array, true ) ) {
                // Push one or more elements onto the end of array
                array_push( $my_array, $term_name );
            }
        }
    }
    
    // Counts all elements in an array
    $counter = count( $my_array );
    
    // Greater than
    if ( $counter > 0 ) {
        // Loop through rates
        foreach ( $rates as $rate_key => $rate ) {
            // Target specific methods, multiple can be added, separated by a comma
            if ( in_array( $rate->method_id, array( 'flat_rate', 'table_rate' ) ) ) {
                // Get rate cost
                $cost = $rates[$rate_key]->cost;
                
                // Greater than
                if ( $cost > 0 ) {              
                    // Set rate cost
                    $rates[$rate_key]->cost = $cost * $counter;
                }
            }
        }
    }

    return $rates;
}
add_filter( 'woocommerce_package_rates', 'filter_woocommerce_package_rates', 10, 2 );

计算 WooCommerce 购物车中的自定义分类术语并将运费乘以数量

Count custom taxonomy terms in WooCommerce cart and multiply shipping rates by the number

wordpress

shipping

cart

custom-taxonomy

woocommerce