根据特定运输的购物车商品数量显示或隐藏运输方式 class

Question

只有当购物车中有 4 件或更少的来自特定运输方式的产品时，我才尝试取消设置两种运输方式 class。

送货方式：flat_rate:20 和 flat_rate:21

运费Class：182

这是我的：

add_filter( 'woocommerce_package_rates', 'hide_shipping_method_based_on_shipping_class', 10, 2 );
function hide_shipping_method_based_on_shipping_class( $rates, $package )
{
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;

    // Shipping Class To Find
    $class = 182;

    // Number Of Shipping Class Items In Cart
    $amount = 4;

    // Shipping Methods To Hide
    $method_key_ids = array('flat_rate:20', 'flat_rate:21');

    // Checking In Cart Items
    foreach( $package['contents'] as $item ) {
        // If We Find The Shipping Class and Number of Items
        if( $item['data']->get_shipping_class_id() == $class && count($package['contents']) <= $amount ){
            foreach( $method_key_ids as $method_key_id ){
                unset($rates[$method_key_id]); // Remove Targeted Methods
            }
            break; // Stop The Loop
        }
    }
    return $rates;
}

我想把上面的逻辑和下面的逻辑结合起来：

add_filter( 'woocommerce_package_rates', 'hide_shipping_method_based_on_shipping_class', 10, 2 );
function hide_shipping_method_based_on_shipping_class( $rates, $package ) {
    $targeted_class_ids = array(182); // Shipping Class To Find
    $allowed_max_qty    = 4; // Max allowed quantity for the shipping class
    $shipping_rates_ids = array( // Shipping Method rates Ids To Hide
        'wf_shipping_ups:07',
        'wf_shipping_ups:08',
        'wf_shipping_ups:11',
        'wf_shipping_ups:54',
        'wf_shipping_ups:65',
        'wf_shipping_ups:70',
        'wf_shipping_ups:74',
        'free_shipping:2',
        'request_shipping_quote'
    );
    
    $related_total_qty  = 0;

    // Checking cart items for current package
    foreach( $package['contents'] as $key => $cart_item ) {
        if( in_array( $cart_item['data']->get_shipping_class_id(), $targeted_class_ids ) ){
            $related_total_qty += $cart_item['quantity'];
        }
    }
    
    // When total allowed quantity is more than allowed (for items from defined shipping classes)
    if ( $related_total_qty > $allowed_max_qty ) {
        // Hide related defined shipping methods
        foreach( $shipping_rates_ids as $shipping_rate_id ) {
            if( isset($rates[$shipping_rate_id]) ) {
                unset($rates[$shipping_rate_id]); // Remove Targeted Methods
            }
        }
    }
    return $rates;
}

创建以下逻辑：

1.如果购物车有 4 个或更少的产品在运输 class 181 取消设置以下运输方式：

• 'flat_rate:20'
• 'flat_rate:21'

2。如果购物车有 5 个或更多产品在运输 class 181 取消设置以下运输方式：

• 'wf_shipping_ups:07'
• 'wf_shipping_ups:08'
• 'wf_shipping_ups:11'
• 'wf_shipping_ups:54'
• 'wf_shipping_ups:65'
• 'wf_shipping_ups:70'
• 'wf_shipping_ups:74'
• 'free_shipping:2'
• 'request_shipping_quote'

如果我单独使用这两种代码，它们都有效。但是当我尝试同时使用两者时出现错误。

我收到以下错误： 无法重新声明 hide_shipping_method_based_on_shipping_class()（之前在 /functions.php:272 中声明）

Answer 1

我假设您已经通过一个接一个地编写这两个代码片段来组合它们。

由于您两次使用相同的函数名称，因此出现错误：无法重新声明.....

因此，您可以尝试通过重命名第二个代码段的函数名称来修复它 -

add_filter( 'woocommerce_package_rates', 'hide_shipping_method_based_on_shipping_class_logic_2', 10, 2 );
function hide_shipping_method_based_on_shipping_class_logic_2( $rates, $package ) {
    // other stuffs
}

Answer 2

您应该为每个代码片段使用不同的函数名称，但最好的方法是将所有内容合并到一个唯一的函数中。

以下是使其发挥独特功能的方法（对于来自特定运输方式的商品）：

• 当购物车中的商品不超过 4 件时隐藏一些送货方式
• 当购物车中的商品不超过 4 件时隐藏一些其他运输方式

代码：

add_filter( 'woocommerce_package_rates', 'show_hide_shipping_methods_based_on_shipping_class', 10, 2 );
function show_hide_shipping_methods_based_on_shipping_class( $rates, $package ) {
    $targeted_class_ids  = array(182); // Shipping Class To Find
    
    $allowed_max_qty     = 4; // Max allowed quantity for the shipping class
    
    $shipping_rates_ids1 = array( // Shipping Method rates Ids To Hide if more than 4 items are in cart
        'wf_shipping_ups:07',
        'wf_shipping_ups:08',
        'wf_shipping_ups:11',
        'wf_shipping_ups:54',
        'wf_shipping_ups:65',
        'wf_shipping_ups:70',
        'wf_shipping_ups:74',
        'free_shipping:2',
        'request_shipping_quote',
    );
    
    $shipping_rates_ids2 = array( // Shipping Method rates Ids to Hide if 4 or less items are in cart
        'flat_rate:20',
        'flat_rate:20',
    );
    
    $related_total_qty   = 0; // Initializing

    // Checking cart items for current package
    foreach( $package['contents'] as $key => $cart_item ) {
        if( in_array( $cart_item['data']->get_shipping_class_id(), $targeted_class_ids ) ){
            $related_total_qty += $cart_item['quantity'];
        }
    }
    
    // When total allowed quantity is more than allowed (for items from defined shipping classes)
    if ( $related_total_qty > $allowed_max_qty ) {
        // Hide related defined shipping methods (more than 4 items)
        foreach( $shipping_rates_ids1 as $shipping_rate_id ) {
            if( isset($rates[$shipping_rate_id]) ) {
                unset($rates[$shipping_rate_id]); // Remove Targeted Methods
            }
        }
    } else {
        // Hide related defined shipping methods (4 or less items)
        foreach( $shipping_rates_ids2 as $shipping_rate_id ) {
            if( isset($rates[$shipping_rate_id]) ) {
                unset($rates[$shipping_rate_id]); // Remove Targeted Methods
            }
        }
    }
    return $rates;
}

代码进入您的活动子主题（或活动主题）的 functions.php 文件。未经测试，它应该可以工作。

Refresh the shipping caches:

1. This code is already saved on your functions.php file.
   
2. In a shipping zone settings, disable / save any shipping method, then enable back / save.
   
   You are done and you can test it.
   

---

处理的物品数量而不是物品累计数量：

替换：

$related_total_qty += $cart_item['quantity'];

来自

$related_total_qty++;