根据WooCommerce结账中购物车项目数量的变化显示或隐藏结账必填字段

这是我在尽力开一家餐厅时的总体想法。这里有两道菜——“今天的特别菜”和“今天的绿色替代菜”。

如果这两者中的任何一个被添加到购物车中,顾客通常会来餐厅吃饭/取餐后离开。

但是。。。 如果顾客点了10份或更多这两份中的任何一份,或者加在一起算10份,餐厅将在同一城市/当地提供免费送货服务。

那么,怎么做呢?

1. 两个产品ID。他们的数量可以在结账时更改。
2. 如果签出时其数量发生更改,则签出会自动更新自身
3. 如果其中一个或两个产品的数量为10(或更多),请取消设置字段
4. 删除字段时,将其设为非必需字段=避免出现以下错误:
5. “你没有填写…”
6. 如果其中一个或两个加在一起的数量小于10,则带回字段
7. 如果出现nr 6,所有字段显然应恢复正常(必需等)

这就是我正在处理的内容:

add_filter( 'woocommerce_checkout_fields' , 'ls_unset_checkout_fields_based_on_qty_or_id',10,1);
function ls_unset_checkout_fields_based_on_qty_or_id( $fields ) {

    // this should be based on a certain amount of product ID:s, example as below
    $targeted_ids = array ( 100, 200 );

    // the removal of fields = if target ID:s are in the cart and the QTY of either one of them is
    // less than 10, remove the fields as selected below
    $minimum_quantity = 10;

    // flag = initialize?    
    $flag = false;
    
    // check if these conditions are met
    foreach ( WC()->cart->get_cart_item_quantities() as $product_id => $cart_item_quantity ) {
        if ( in_array( $product_id, $targeted_ids ) ) {
        if ( $cart_item_quantity >= $minimum_quantity ) {
        $flag = true;
    break;
    }
  }
}

    // if both target ID:s have a minimum of 10 (qty), remove the fields below and make them non-required
    // this would leave us with First name, Last name, Email, Phone
    // if the QTY of any of the two target ID:s are changed to below 10 while on checkout, add back all the fields
    if ( $flag ) {

        unset( $fields['shipping']['shipping_country'] );
        unset( $fields['shipping']['shipping_state'] );
        unset( $fields['billing']['billing_country'] );
        unset( $fields['billing']['billing_state'] );
        unset( $fields['shipping']['shipping_company'] );
        unset( $fields['shipping']['shipping_country'] );
        unset( $fields['shipping']['shipping_address_1'] );
        unset( $fields['shipping']['shipping_address_2'] );
        unset( $fields['shipping']['shipping_city'] );
        unset( $fields['shipping']['shipping_state'] );
        unset( $fields['shipping']['shipping_postcode'] );
        unset( $fields['billing']['billing_address_1'] );
        unset( $fields['billing']['billing_address_2'] );
        unset( $fields['billing']['billing_city'] );
        unset( $fields['billing']['billing_postcode'] );
        unset( $fields['billing']['billing_country'] );
        unset( $fields['billing']['billing_state'] );
        unset( $fields['billing']['billing_company'] );
    }

    return $fields;
}

我试着理解是否有使用JavaScript(或jQuery)的选项,但我不太熟练。如果它们的数量很好,只需删除它们,这就是在签出根据产品数量变化进行更新时来回“删除和添加”字段的问题。

任何帮助都将不胜感激。