在插入数据库之前使用钩子从 Woocommerce 订单中删除费用

Question

在将 Woocommerce 订单保存到数据库之前，有什么方法可以取消费用吗？

我尝试了以下钩子，但没有成功

woocommerce_before_save_order_items

woocommerce_calculate_totals

wp_insert_post_data

我也试过如下编辑费用总额，但费用仍然保存到数据库中

add_action( 'woocommerce_review_order_before_payment', 'cst_my_hook_1', 10, 3); function cst_my_hook_1() { WC()->cart->set_fee_total(0); }

我正在分享一个屏幕截图，以使我的要求更清楚。 Woocommerce 购物车 class (class-wc-cart.php) 包含一个 public 功能来添加费用，所以我认为应该有办法删除它。

我使用挂钩“woocommerce_cart_calculate_fees”添加了屏幕截图中显示的费用。现在我想在保存到数据库之前将其删除。

我正在使用 Wordpress 5.7.1，Woocommerce 5.2.1

Answer 1

要在结帐后禁用订单费用，请使用以下这个简单的挂钩函数，它将清除订单和电子邮件通知中的所有费用：

add_action( 'woocommerce_checkout_order_created', 'order_created_disable_fees' );
function order_created_disable_fees( $order ) {
    $targeted_item_name = __( "Total Tax Payment", "woocommerce" );

    foreach( $order->get_items( 'fee' ) as $item_id => $item ) {
        if( $targeted_item_name === $item['name'] ) {
            $order->remove_item($item_id);
        }       
    }
    $order->calculate_totals();
}

代码进入活动子主题（或活动主题）的 functions.php 文件。已测试并有效。

现在，如果您想取消费用，但保留原始总订单金额，请使用以下方法：

add_action( 'woocommerce_checkout_order_created', 'order_created_disable_fees' );
function order_created_disable_fees( $order ) {
    $targeted_item_name = __( "Total Tax Payment", "woocommerce" );

    foreach( $order->get_items( 'fee' ) as $item_id => $item ) {
        if( $targeted_item_name === $item['name'] ) {
            $order->remove_item($item_id);
        }
    }
    $order->save();
}

代码进入活动子主题（或活动主题）的 functions.php 文件。已测试并有效。

Answer 2

如果您希望在将订单保存到数据库之前从订单中删除费用，您可以使用在订单创建之前触发的woocommerce_create_order挂钩create_order WC_Checkout 方法 class.

基于这个答案：

您将能够从购物车中删除费用。

However, you will also have to recalculate the totals and taxes (it works whether the fee is taxable or not, and even with multiple tax classes).

从购物车中删除费用并重新计算总额

// removes a specific fee by name before creating the order and recalculates the totals
add_filter( 'woocommerce_create_order', 'remove_specific_fee_from_cart_before_creating_order', 10, 2 );
function remove_specific_fee_from_cart_before_creating_order( $order_id = null, $order ) {

    // get the fees added to the cart
    $fees = WC()->cart->get_fees();

    // initialize taxes (if the fee is not taxable)
    $fee_tax = 0;
    $fee_tax_data = array();

    foreach ( $fees as $key => $fee ) {
        // replace "Total Tax Payment" with the name of the fee you added to the cart
        if ( $fee->name == 'Total Tax Payment' ) {
            // gets the data to recalculate the cart total
            $fee_amount = $fee->amount;
            if ( $fee->taxable ) {
                $fee_tax      = $fee->tax;
                $fee_tax_data = $fee->tax_data;
            }
            // removes the fee
            unset( $fees[$key] );
            break;
        }
    }

    // updates the cart fees
    WC()->cart->fees_api()->set_fees( $fees );

    // gets the current values of the cart to be recalculated
    $cart_total     = WC()->cart->get_total(''); // returns the float value instead of HTML code
    $cart_total_tax = WC()->cart->get_total_tax();
    $cart_fee_taxes = WC()->cart->get_fee_taxes();

    // if the fee is taxable
    // recalculates the taxes by removing the taxes of the removed fee
    if ( ! empty( $fee_tax_data ) ) {
        foreach ( $cart_fee_taxes as $fee_tax_key => $fee_tax ) {
            if ( array_key_exists( $fee_tax_key, $fee_tax_data ) ) {
                $cart_fee_taxes[$fee_tax_key] = $fee_tax - $fee_tax_data[$fee_tax_key];
            }
        }
    }

    // updates the cart totals
    WC()->cart->set_total( $cart_total - $fee_amount - $fee_tax );
    WC()->cart->set_total_tax( $cart_total_tax - $fee_tax );
    WC()->cart->set_fee_taxes( $cart_fee_taxes );

    return $order_id;
}

在不重新计算总数的情况下从购物车中删除费用

// removes a specific fee by name before creating the order
add_filter( 'woocommerce_create_order', 'remove_specific_fee_from_cart_before_creating_order', 10, 2 );
function remove_specific_fee_from_cart_before_creating_order( $order_id = null, $order ) {

    // get the fees added to the cart
    $fees = WC()->cart->get_fees();

    foreach ( $fees as $key => $fee ) {
        // replace "Total Tax Payment" with the name of the fee you added to the cart
        if ( $fee->name == 'Total Tax Payment' ) {
            // removes the fee
            unset( $fees[$key] );
            break;
        }
    }

    // updates the cart fees
    WC()->cart->fees_api()->set_fees( $fees );

    return $order_id;
}

代码已经过测试并且可以工作。将它添加到您的活动主题 functions.php.

在插入数据库之前使用钩子从 Woocommerce 订单中删除费用

Remove fee from Woocommerce order using hook before inserting to database

php

wordpress

orders

woocommerce

hook-woocommerce