在Cart WooCommerce中只允许1个数量的特定产品

我有一个变量产品X，该产品有两个变量，变量A和变量B。

如果客户在购物车中添加了变体a，那么我想阻止客户在购物车中添加变体B。客户一次只能订购该产品的一种变体。

我添加了以下代码，但效果不好，因为如果我在购物车中添加了产品X的一个变体，那么我尝试在购物车中添加另一个产品Y，但它不会添加到购物车中。

我的代码当前代码如下。

function wph_add_the_cart_validation_for_zoomarine_e_ticket( $passed ) { 
    // The product id of variable product X     
    $product_id = 44050;
    $in_cart = false;

    foreach( WC()->cart->get_cart() as $cart_item ) {
        $product_in_cart = $cart_item[\'product_id\'];
       if ( $product_in_cart === $product_id ) $in_cart = true;
    }

   if ( $in_cart )  { ?>
       <script type="text/javascript">
           alert("The product is already in cart. You can only add one E ticket per order");
        </script>
   <?php
       $passed = false;
   }
   return $passed;
}

add_filter( \'woocommerce_add_to_cart_validation\', \'wph_add_the_cart_validation_for_zoomarine_e_ticket\', 10, 5 );

add_filter( \'woocommerce_add_to_cart_validation\', \'allowed_products_variation_in_the_cart\', 10, 5 ); function allowed_products_variation_in_the_cart( $passed, $product_id, $quantity, $variation_id, $variations) { $product_a = 14576; $product_b = 14091; foreach (WC()->cart->get_cart() as $cart_item_key => $cart_item) { $cart_product_id = $cart_item[\'product_id\']; if ($cart_item[\'variation_id\']) { $cart_product_id = $cart_item[\'variation_id\']; } if ( ($cart_product_id == $product_a && $variation_id == $product_b) || ($cart_product_id == $product_b && $variation_id == $product_a) ) { wc_add_notice(__(\'You can\\\'t add this product.\', \'domain\'), \'error\'); $passed = false; // don\'t add the new product to the cart // We stop the loop break; } } return $passed; }

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