Woocommerce 产品已在购物车中

Question

我有这个代码来显示产品何时已经在购物车中，我还需要它来显示产品的数量。

    add_filter( 'woocommerce_product_add_to_cart_text', 'wcpt_modify_add_to_cart_text', 9999, 2 );

function wcpt_modify_add_to_cart_text( $text, $product ) {
    
    // if cart is empty return 'Add to Quote'
    if ( WC()->cart->is_empty() ) return 'Add to Quote';

    // otherwise loop through cart items
    foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
        $product_id = apply_filters( 'woocommerce_cart_item_product_id', $cart_item['product_id'], $cart_item, $cart_item_key );
        $qty = $cart_item['quantity'];
        
        // if cart contains current product ID return its quantity
        if ( $product->get_id() == $product_id ) {
            return $qty . ' - Already Added';
        }
    }

    // if the cart is not empty but the product is not in the cart...
    return 'Add to Quote';
}

上面的更新代码用 Hooks ASWELL 更新 感谢@businessbloomer，上面的代码创造了奇迹，现在唯一的问题是我必须刷新页面才能看到任何内容

Answer 1

代码有点乱，这个修改后的版本应该可以了。我添加了一些内联 cmets 来解释每个新部分：

add_filter( 'woocommerce_product_add_to_cart_text', 'wcpt_modify_add_to_cart_text', 9999, 2 );

function wcpt_modify_add_to_cart_text( $text, $product ) {
    
    // if cart is empty return 'Add to Quote'
    if ( WC()->cart->is_empty() ) return 'Add to Quote';

    // otherwise loop through cart items
    foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
        $product_id = apply_filters( 'woocommerce_cart_item_product_id', $cart_item['product_id'], $cart_item, $cart_item_key );
        $qty = $cart_item['quantity'];
        
        // if cart contains current product ID return its quantity
        if ( $product->get_id() == $product_id ) {
            return $qty . ' - Already Added';
        }
    }

    // if cart is not empty but product is not in the cart...
    return 'Add to Quote';
}

截图：