产品未在woocommerce_add_to_cart_validation上的add_filter（）之后添加到购物车中

问题描述：

I have a scenario in which a non logged user can only add 1 product in his cart. I am adding a filter on woocommerce_add_to_cart_validation which works fine with $woocommerce->cart->cart_contents_count>0 i.e. it displays a notice You cannot add another product to your cart.0 however, if I do $woocommerce->cart->cart_contents_count>1 the page just refresh without adding anything into cart. Below is my custom function for doing that.

if(!is_user_logged_in()):
add_filter( 'woocommerce_add_to_cart_validation', 'woocommerce_add_cart_myfunction' );

function woocommerce_add_cart_myfunction( $cart_item_data ) {

    global $woocommerce;

$numberOfProducts=$woocommerce->cart->cart_contents_count;
    if($numberOfProducts > 1){
         wc_add_notice(
                     __( 'You cannot add another product to your cart.'.$numberOfProducts, 'woocommerce' ));
                return false;
    } 

}
endif;

我有一个场景，其中非登录用户只能在他的购物车中添加1个产品。我在woocommerce_add_to_cart_validation code>上添加了一个过滤器，它适用于 $ woocommerce-＆gt; cart-＆gt; cart_contents_count＆gt; 0 code>即显示通知您无法添加其他产品到你的购物车。 code>但是，如果我 $ woocommerce-＆gt; cart-＆gt; cart_contents_count＆gt; 1 code>，页面只需刷新而不会在购物车中添加任何内容。 Below是我的自定义函数。 p>

  if（！is_user_logged_in（））：
add_filter（'woocommerce_add_to_cart_validation'，'woocommerce_add_cart_myfunction'）; 
 
function woocommerce_add_cart_myfunction（  $ cart_item_data）{
 
全球$ woocommerce; 
 
 $ numberOfProducts = $ woocommerce-＆gt; cart-＆gt; cart_contents_count; 
 if（$ numberOfProducts＆gt; 1）{
 wc_add_notice（
 __（' 你无法在你的购物车中添加其他产品。'。$ numberOfProducts，'woocommerce'））; 
返回false; 
} 
 
} 
endif; 
  code>  pre> 
   DIV>

答

You need to return the cart item data, if the number of products is only 1:

function woocommerce_add_cart_myfunction( $cart_item_data ) {

    $numberOfProducts = WC()->cart->cart_contents_count;
    if ( $numberOfProducts > 1 ) {
         wc_add_notice(
                     __( 'You cannot add another product to your cart.'.$numberOfProducts, 'woocommerce' ));
         return false;
    }

    return $cart_item_data;

}

产品未在woocommerce_add_to_cart_validation上的add_filter（）之后添加到购物车中

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