WooCommerce仅当客户邮编不为空时触发wc_add_notice通知的实现咨询

WooCommerce 配送区域最低金额校验修复方案 #

核心修改逻辑 #

• 新增邮编优先级校验，未填写邮编时直接触发输入提示，不会默认匹配1区规则
• 邮编填写完成后再执行原有配送区域匹配、最低订单金额校验逻辑

修复后完整代码 #

//MINIMUM CART AMOUNT FOR CHECKOUT
add_action( 'woocommerce_check_cart_items', 'required_min_cart_subtotal_amount' );
function required_min_cart_subtotal_amount() {
    // 原有冗余代码可直接注释，无实际作用
    // $zone = WC_Shipping_Zones::get_zone_by ( 'zone_name', "1" . 'zone_name', "2" . 'zone_name' , "3" );

    // Only run it in  Cart or Checkout pages
    if( is_cart() || ( is_checkout() && ! is_wc_endpoint_url() ) ) {
        // Get cart shipping packages
        $shipping_packages =  WC()->cart->get_shipping_packages();
        $first_package = reset( $shipping_packages );

        // 新增：校验用户是否已填写邮编
        $customer_postcode = $first_package['destination']['postcode'] ?? '';
        if( empty( trim( $customer_postcode ) ) ) {
            wc_add_notice( __("Please enter your postcode"), 'error' );
            remove_action( 'woocommerce_proceed_to_checkout','woocommerce_button_proceed_to_checkout', 20);
            return;
        }

        //Get the WC_Shipping_Zone instance object for the first package
        $shipping_zone = wc_get_shipping_zone( $first_package );
        $zone_id = $shipping_zone->get_id(); //Get the zone ID
        $zone_name = $shipping_zone->get_zone_name(); // Get the zone name

        // Total (before taxes and shipping charges)
        $total = WC()->cart->subtotal;

        // HERE set minimum cart total amount (for Zone 1,2,3 and for other zones)
        $min_total = 180;
        if ($zone_id == "2") $min_total = 100;
        if ($zone_id == "3") $min_total = 220;

        // Add an error notice if cart total is less than the minimum required
        if( $total <= $min_total ) {
            // Display an error message
            wc_add_notice(  sprintf(
                __("A minimum order of - %s is required.  Please enter your Postal Code in the Shipping section below.  Minimum orders differ from area to area."),
                wc_price( $min_total)
            ), 'error' );
            remove_action( 'woocommerce_proceed_to_checkout','woocommerce_button_proceed_to_checkout', 20);
        }
        add_action( 'woocommerce_proceed_to_checkout', 'disable_checkout_button', 1);
    }
}

效果验证 #

• 新访客未填写邮编进入购物车页面时，仅展示「Please enter your postcode」提示
• 填写邮编并提交配送地址信息后，自动匹配对应区域的最低金额要求
• 订单金额不满足对应区域要求时，展示原有区域对应的最低金额提示

内容的提问来源于stack exchange，提问作者Linda Rabie