php - 应用于购物车的购物车折扣在 wordpress 中使用 Woocommerce 时未在订单总计中显示正确的金额

Question

我正在创建一个新的 woocommerce 插件，它将在购物车页面顶部提供应用折扣的选项。

现在，当购物车中有产品时，用户将点击 Apply Discount 按钮，当点击并从我的自定义插件触发操作时，将为该特定购物车订单添加购物车折扣。

到目前为止，它运行良好，还显示应用了购物车折扣。下面是截图

正如您从屏幕截图中看到的那样，订单总计显示计算出了错误的数字。 以下是我的自定义 woocommerce 插件文件中的代码。

提交按钮时调用以下操作

if(!empty($_POST['apply_discount_woo'])){
                    add_action('woocommerce_calculate_totals',array(&$this,'cart_order_total_action'));
                }

和函数代码:

public function cart_order_total_action(){
                if ( is_user_logged_in() ){
                    global $woocommerce;
                    global $current_user;
                    global $wpdb;
                    $u_id = $current_user->ID;
                    $table_name = $wpdb->prefix."woocommerce_customer_reward_ms";
                    $thetable2  = $wpdb->prefix . "woocommerce_customer_reward_cart_ms";
                    $table_name3 = $wpdb->prefix."woocommerce_customer_reward_points_log_ms";
                    $data       = $wpdb->get_row("SELECT * from $table_name where id=$u_id");
                    $data2      = $wpdb->get_row("SELECT * from $thetable2");
                    /* Order Id goes here */
                    $orders=array();//order ids
                    $args = array(
                        'numberposts'     => -1,
                        'meta_key'        => '_customer_user',
                        'meta_value'      => $current_user->ID,
                        'post_type'       => 'shop_order',
                        'post_status'     => 'publish',
                        'tax_query'=>array(
                                array(
                                    'taxonomy'  =>'shop_order_status',
                                    'field'     => 'slug',
                                    'terms'     =>'on-hold'
                                    )
                        )  
                    );
                    $posts=get_posts($args);
                    //get the post ids as order ids
                    $orders=wp_list_pluck( $posts, 'ID' );
                    $order = $orders[0];
                    /* Order Id ends here */
                    if($data){
                        $user_points = $data->points;
                        $points_set  = $data2->woo_pts_set;
                        print_r($woocommerce->cart->applied_coupons);
                        echo $woocommerce->cart->discount_cart;
                        echo $woocommerce->cart->get_cart_total();
                        /* the line below adds the cart discount to the Cart */
                        $woocommerce->cart->discount_cart = $data2->woo_discount_set;
                    }else{
                        echo 'You dont have any woo points yet.!!';
                    }
                }
            }

如何在添加的购物车折扣上更新购物车总数？

Answer 1

也许这不是您想要 100% 实现目标的方式，但您可以即时生成优惠券:

$coupon_code = 'UNIQUECODE'; // Code
$amount = '10'; // Amount
$discount_type = 'fixed_cart'; // Type: fixed_cart, percent, fixed_product, percent_product

$coupon = array(
    'post_title'   => $coupon_code,
    'post_content' => '',
    'post_status'  => 'publish',
    'post_author'  => 1,
    'post_type'    => 'shop_coupon'
);

$new_coupon_id = wp_insert_post( $coupon );

// Add meta
update_post_meta( $new_coupon_id, 'discount_type', $discount_type );
update_post_meta( $new_coupon_id, 'coupon_amount', $amount );
update_post_meta( $new_coupon_id, 'individual_use', 'no' );
update_post_meta( $new_coupon_id, 'product_ids', '' );
update_post_meta( $new_coupon_id, 'exclude_product_ids', '' );
update_post_meta( $new_coupon_id, 'usage_limit', '' );
update_post_meta( $new_coupon_id, 'expiry_date', '' );
update_post_meta( $new_coupon_id, 'apply_before_tax', 'yes' );
update_post_meta( $new_coupon_id, 'free_shipping', 'no' );