Php WooCommerce购物车中仅允许一个可下载产品

发布于03月03日

以下是防止购物车中有多个可下载产品的代码:

add_filter( 'woocommerce_add_to_cart_validation', 'only_one_product_type_allowed', 10, 3 );
function only_one_product_type_allowed( $passed, $product_id, $quantity ) {

  $product = wc_get_product( $product_id );
  $product_type = $product->get_type();
  $product_downloadable = $product->is_downloadable();

  foreach ( WC()->cart->get_cart() as $cart_item ) {

    if ( $product_type == $cart_item['data']->get_type() && $product_downloadable == $cart_item['data']->is_downloadable() && ! $product->is_virtual() ) {

      wc_add_notice( __( "NOTICE ON CART PAGE.", "woocommerce" ), 'error' );

      return false;
    }
  }

  return $passed;
  
}

现在，它不允许在单一购物车中下载多个产品，这是可以的.但它也不允许购物车中有多个常规商品.它也发出了同样的通知.有谁能帮我修好吗.

推荐答案

要在购物车中只允许一个可下载的产品，而允许其他产品类型，请try 使用以下选项:

add_filter( 'woocommerce_add_to_cart_validation', 'only_one_downloadable_product_allowed', 10, 4 );
function only_one_downloadable_product_allowed( $passed, $product_id, $quantity, $variation_id = null ) {
    // Get the current product object
    $product  = wc_get_product( $variation_id > 0 ? $variation_id : $product_id );

    // Initializing downloadable product count
    $count_dl = $product->is_downloadable() ? 1 : 0; 

    // Loop through cart items
    foreach ( WC()->cart->get_cart() as $item ) {
        // Check for downloadable products in cart
        if ( $item['data']->is_downloadable() ) {
            $count_dl++;
        }
    }

    if ( $count_dl > 1 ) {
        wc_add_notice( __( "Only one downloadable product is allowed at the time.", "woocommerce" ), 'error' );
        $passed = false;
    }
    return $passed;
}

代码位于您的子主题的unctions.php文件中(或在插件中).应该能行得通.