更新时间:2023-11-30 12:54:58
以编程方式为订单打折的唯一可用功能是欺骗费用 API.有关信息,woocommerce 不推荐此技巧,但很多人都在使用,因为优惠券之外的 Woocommerce 中没有折扣功能.
The only available feature to make a discount programmatically for an Order, is tricking the Fee API. For info, this trick is not recommended by woocommerce, but used by many people as there is not a discount feature in Woocommerce outside Coupons.
以下功能将允许您进行任何金额或百分比折扣的固定折扣.订单需要存在(之前保存).
The following function will allow you to make a fixed discount of any amount or a percentage discount. The order need to exist (to be saved before).
函数代码(适用于 Woocommerce 3.2+ 版本):
/**
* Add a discount to an Orders programmatically
* (Using the FEE API - A negative fee)
*
* @since 3.2.0
* @param int $order_id The order ID. Required.
* @param string $title The label name for the discount. Required.
* @param mixed $amount Fixed amount (float) or percentage based on the subtotal. Required.
* @param string $tax_class The tax Class. '' by default. Optional.
*/
function wc_order_add_discount( $order_id, $title, $amount, $tax_class = '' ) {
$order = wc_get_order($order_id);
$subtotal = $order->get_subtotal();
$item = new WC_Order_Item_Fee();
if ( strpos($amount, '%') !== false ) {
$percentage = (float) str_replace( array('%', ' '), array('', ''), $amount );
$percentage = $percentage > 100 ? -100 : -$percentage;
$discount = $percentage * $subtotal / 100;
} else {
$discount = (float) str_replace( ' ', '', $amount );
$discount = $discount > $subtotal ? -$subtotal : -$discount;
}
$item->set_tax_class( $tax_class );
$item->set_name( $title );
$item->set_amount( $discount );
$item->set_total( $discount );
if ( '0' !== $item->get_tax_class() && 'taxable' === $item->get_tax_status() && wc_tax_enabled() ) {
$tax_for = array(
'country' => $order->get_shipping_country(),
'state' => $order->get_shipping_state(),
'postcode' => $order->get_shipping_postcode(),
'city' => $order->get_shipping_city(),
'tax_class' => $item->get_tax_class(),
);
$tax_rates = WC_Tax::find_rates( $tax_for );
$taxes = WC_Tax::calc_tax( $item->get_total(), $tax_rates, false );
print_pr($taxes);
if ( method_exists( $item, 'get_subtotal' ) ) {
$subtotal_taxes = WC_Tax::calc_tax( $item->get_subtotal(), $tax_rates, false );
$item->set_taxes( array( 'total' => $taxes, 'subtotal' => $subtotal_taxes ) );
$item->set_total_tax( array_sum($taxes) );
} else {
$item->set_taxes( array( 'total' => $taxes ) );
$item->set_total_tax( array_sum($taxes) );
}
$has_taxes = true;
} else {
$item->set_taxes( false );
$has_taxes = false;
}
$item->save();
$order->add_item( $item );
$order->calculate_totals( $has_taxes );
$order->save();
}
代码位于您的活动子主题(活动主题)的 function.php 文件中.经测试有效.
Code goes in function.php file of your active child theme (active theme). Tested and works.
用法示例:
1) $12
的固定折扣(带有动态 $order_id
):
wc_order_add_discount( $order_id, __("Fixed discount"), 12 );
2) 5%
的百分比折扣(带有动态 $order_id
):
wc_order_add_discount( $order_id, __("Discount (5%)"), '5%' );
金额(或百分比)也可以是一个动态变量...
The amount (or the percentage) can be also a dynamic variable…