我正试图通过编程为我的商店的订单创造一个折扣。我的用户有一个可变的贴现率,例如10%。我想在结账前把他们的折扣应用到订单上,但是,商店里的一些商品不适用于折扣。
这些项目有一个切换设置,以便我可以检查哪些产品做或不允许折扣被应用。
目前,我正在循环的订单,以检查哪些项目是适用的,并使用'fixed_cart'优惠券,以增加折扣。
这是可行的,然而,在管理优惠券适用于所有的行项目,甚至应该跳过的项目。当需要退款时,不可能把多少钱退还给客户。
检查购物车项目
$tradeDiscountTotal = 0;
foreach( WC()->cart->get_cart() as $cart_item ) {
    if(!get_field('trade_discount_exempt', $cart_item['product_id'])) {
        $tradeDiscountTotal += $cart_item['line_subtotal'];
    }
}应用此订单的总折扣
$coupon->set_discount_type('fixed_cart');
$coupon->set_amount($tradeDiscountTotal);
return $coupon;如何为每个订单创建一个定制折扣,并确保在管理区域中正确表示折扣的产品?
发布于 2020-10-16 11:47:29
更新
解决方案是手动创建优惠券,其中包括10%的百分比折扣。然后在couponcode的基础上添加以下代码
确保满足condition
所以我们得到:
trade_discount_exempt = 0function filter_woocommerce_coupon_get_discount_amount( $discount, $price_to_discount , $cart_item, $single, $coupon ) {
    // Product ID in cart
    $product_id = $cart_item['product_id'];
    
    // If 'trade_discount_exempt'
    if ( get_field( 'trade_discount_exempt', $product_id ) ) {
        $discount = 0;
    }
    return $discount;
}
add_filter( 'woocommerce_coupon_get_discount_amount', 'filter_woocommerce_coupon_get_discount_amount', 10, 5 );中应用优惠券(如果不是trade_discount_exempt )
function action_woocommerce_before_calculate_totals( $cart ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;
   if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 )
        return;
    // Only cart
    if( ! is_cart() )
        return;
    // Coupon code
    $coupon_code = 'testcoupon';
    
    // Format
    $coupon_code = wc_format_coupon_code( $coupon_code );
    
    // Iterating though each cart items
    foreach ( $cart->get_cart() as $cart_item_key => $cart_item ) {
        // Product ID in cart
        $product_id = $cart_item['product_id'];
      
        // NOT 'trade_discount_exempt'
        if ( ! get_field( 'trade_discount_exempt', $product_id ) ) {
            // Applied coupons
            $applied_coupons = $cart->get_applied_coupons();
            // Is applied
            $is_applied = in_array( $coupon_code, $applied_coupons );
            // NOT applied
            if ( ! $is_applied ) {
                // Apply
                $cart->apply_coupon( $coupon_code );
                break;
            }
        }
    }
}
add_action( 'woocommerce_before_calculate_totals', 'action_woocommerce_before_calculate_totals', 10, 1 );可选:以下是其他两种可能的解决方案:
1.使用woocommerce_calculated_total过滤器钩子,在cart上应用全局折扣。
function filter_woocommerce_calculated_total( $total, $cart ) {
    // Discount (percentage)
    $percentage = 10; // 10 %
    
    // Set variable, used in loop
    $new_total = 0;
    
    // Iterating though each cart items
    foreach ( $cart->get_cart() as $cart_item_key => $cart_item ) {
        // Product ID in cart
        $product_id = $cart_item['product_id'];
        // NOT 'trade_discount_exempt'
        if( ! get_field( 'trade_discount_exempt', $product_id ) ) {
            // Product price
            $price = $cart_item['data']->get_price();
            // Caclulate new price
            $new_price = $price * ( 1 - ( $percentage / 100 ) ); 
            // Add new price to new total
            $new_total += $new_price;
        }
    }
    
    // New total greater than
    if ( $new_total > 0 ) {
        $total = $new_total;
    }
    return $total;
}
add_filter( 'woocommerce_calculated_total', 'filter_woocommerce_calculated_total', 10, 2 );2.使用woocommerce_before_calculate_totals动作钩子,对产品价格给予折扣。
function action_woocommerce_before_calculate_totals( $cart ) {  
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;
    if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 )
        return;
    
    // Discount (percentage)
    $percentage = 10; // 10 %
    
    // Iterating though each cart items
    foreach ( $cart->get_cart() as $cart_item_key => $cart_item ) {
        // Product ID in cart
        $product_id = $cart_item['product_id'];
        
        // NOT 'trade_discount_exempt'
        if( ! get_field( 'trade_discount_exempt', $product_id ) ) {
            // Product price
            $price = $cart_item['data']->get_price();
            
            // Caclulate new price
            $new_price = $price * ( 1 - ( $percentage / 100 ) ); 
            // Set price
            $cart_item['data']->set_price( $new_price );
        }
    }
}
add_action( 'woocommerce_before_calculate_totals', 'action_woocommerce_before_calculate_totals', 10, 1 );https://stackoverflow.com/questions/64386896
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