WooCommerce 结帐前的强制性优惠券（可选：针对特定产品）

Question

我想强制客户在结账前添加优惠券代码。我希望它适用于我的 WooCommerce 商店中的每个优惠券代码和每个产品。

我正在使用这个代码，它几乎可以解决问题，但它只适用于一个优惠券代码 (freev1)

如何让它适用于生成的每个优惠券代码？

add_action( 'woocommerce_check_cart_items', 'mandatory_coupon_code' );
function mandatory_coupon_code() {
    // HERE set your coupon code
    $mandatory_coupon = 'freev1';

    $applied_coupons = WC()->cart->get_applied_coupons();

    // If coupon is found we exit
    if( in_array( $mandatory_coupon, $applied_coupons ) ) return;

    // Not found: display an error notice
    wc_add_notice( __( 'Add coupon before checkout.', 'woocommerce' ), 'error' );
}

Answer 1

只检查$applied_coupons是否为空，为空时添加提示。删除 $mandatory_coupon & if ( in_array...

所以你得到：

function action_woocommerce_check_cart_items() {
    // Isset
    if ( WC()->cart ) {
        // Get applied coupons
        $applied_coupons = WC()->cart->get_applied_coupons();

        // When empty
        if ( empty ( $applied_coupons ) ) {
            // Not found: display an error notice
            wc_add_notice( __( 'Add coupon before checkout.', 'woocommerce' ), 'error' );   
        }
    }
}
add_action( 'woocommerce_check_cart_items', 'action_woocommerce_check_cart_items', 10 );

更新：

要将此应用于购物车中的特定产品，请使用：

function action_woocommerce_check_cart_items() {
    // The targeted product ids
    $targeted_ids = array( 30, 815 );

    // Flag
    $found = false;
    
    // Isset
    if ( WC()->cart ) {
        // Get applied coupons
        $applied_coupons = WC()->cart->get_applied_coupons();

        // When empty
        if ( empty ( $applied_coupons ) ) {
            // Loop through cart items
            foreach ( WC()->cart->get_cart() as $cart_item ) {
                if ( array_intersect( $targeted_ids, array( $cart_item['product_id'], $cart_item['variation_id'] ) ) ) {
                    $found = true;
                    break;
                }
            }
        }
    }
    
    // True
    if ( $found ) {
        // Not found: display an error notice
        wc_add_notice( __( 'Add coupon before checkout.', 'woocommerce' ), 'error' );
    }
}
add_action( 'woocommerce_check_cart_items', 'action_woocommerce_check_cart_items', 10 );

补充问题：

"Will it be possible to use almost same code, but instead make it work from the checkout page and force the use of a coupon before placing a order?"

You could replace woocommerce_check_cart_items with the woocommerce_checkout_process hook for the checkout page

WooCommerce 结帐前的强制性优惠券（可选：针对特定产品）

Mandatory coupon before checkout in WooCommerce (optional: for specific products)

php

wordpress

checkout

coupon

woocommerce