在Woocommerce购物车中限制免费产品的最大数量

Question

我的客户要求在他们的Woocommerce在线商店上提供他们的可变产品的免费样品，每个独特的产品样品最多有1个，订单上的任何一个样品都有5个。

我为每个产品添加了额外的“免费样品”变体，然后使用免费的最小/最大数量插件将每个单独的免费样品数量限制为每个订单1个，请参见以下截图：

https://ibb.co/f0Wd7XC https://ibb.co/8DrsZZj

到目前为止，我还没有建立一个方法来限制任何“免费样本”变体组合的最大数量为5个。我能看到的唯一方法是将每个订单的免费产品总数(即价格= in 0)限制为5个，或者为每个变体分配一个特定的发货类别(即“免费样品”)，然后以某种方式将每个订单中分配给该发货类别的产品数量限制为5个。这可能吗？

干杯,

M.

Answer 1

Woocommerce有可以使用的验证钩子。

第一个是当我们添加到购物车中时

function add_to_cart_free_samples($valid, $product_id, $quantity) {
    $max_allowed = 5;
    $current_cart_count = WC()->cart->get_cart_contents_count();
    foreach (WC()->cart->get_cart() as $cart_item_key=>$cart_item ){
        // Here change attribute group if needed - currently assigned to default size attribute
        $variation = $cart_item['variation']['attribute_pa_size'];
    }
    if( ( $current_cart_count > $max_allowed || $current_cart_count + $quantity > $max_allowed ) && $variation === 'free-sample' && $valid ){
        wc_add_notice( sprintf( __( 'Whoa hold up. You can only have %d items in your cart', 'your-textdomain' ), $max_allowed ), 'error' );
        $valid = false;
    }

    return $valid;
}

add_filter( 'woocommerce_add_to_cart_validation', 'add_to_cart_free_samples', 10, 3 );

第二个是当我们在购物车页面上更新购物车的时候。

function update_add_to_cart_free_samples( $passed, $cart_item_key, $values, $updated_quantity ) {

    $cart_items_count = WC()->cart->get_cart_contents_count();
    $original_quantity = $values['quantity'];
    $max_allowed = 5;
    $total_count = $cart_items_count - $original_quantity + $updated_quantity;
    foreach (WC()->cart->get_cart() as $cart_item_key=>$cart_item ){
        // Here change attribute group if needed - currently assigned to default size attribute
        $variation = $cart_item['variation']['attribute_pa_size'];
    }
    if( $cart_items_count > $max_allowed && $variation === 'free-sample' ){
        $passed = false;
        wc_add_notice( sprintf( __( 'Whoa hold up. You can only have %d items in your cart', 'your-textdomain' ), $max_allowed ), 'error' );
    }
    return $passed;
}
add_filter( 'woocommerce_update_cart_validation', 'update_add_to_cart_free_samples', 10, 4 );

在$cart_item中，您可以调试并查看购物车中当前产品的所有信息。从那里，您可以添加条件取决于发货或属性或价格或w/e你想要的。