php - 如果在 Woocommerce 中没有应用优惠券，则自动将折扣应用于用户角色

Question

我在下面有这段代码，但我希望它仅在用户未使用其他代码时有效，并且如果用户使用其他优惠券，则禁用此优惠券。

根据"Apply a discount for a specific user role in Woocommerce " 答案代码，我一直在尝试查看如何检查是否有任何优惠券，但无法弄清楚。

// Applying conditionally a discount for a specific user role
add_action( 'woocommerce_cart_calculate_fees', 'discount_based_on_user_role', 20, 1 );
function discount_based_on_user_role( $cart ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return; // Exit

    // Only for 'company' user role
    if ( ! current_user_can('affiliate') )
        return; // Exit

    // Only for 'company' user role
    if ( ! current_user_can('affiliate') )
        return; // Exit

    // HERE define the percentage discount
    $percentage = 15;

    $discount = $cart->get_subtotal() * $percentage / 100;
    // Applying discount
    $cart->add_fee( sprintf( __("Affiliate Discount (%s)", "woocommerce"), $percentage . '%'), -$discount, true );
}

感谢任何帮助。

Answer 1

如果购物车中没有适用的优惠券，请尝试以下将根据特定用户角色设置自定义折扣:

// Applying conditionally a discount for a specific user role and no applied coupons
add_action( 'woocommerce_cart_calculate_fees', 'discount_based_on_user_role', 20, 1 );
function discount_based_on_user_role( $cart ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return; // Exit

    // Only for 'affiliate' user role
    if ( ! current_user_can('affiliate') )
        return; // Exit

    // Only if there is no applied coupons in cart
    if ( ! empty( $cart->get_applied_coupons() ) )
        return; // Exit

    // HERE define the percentage discount
    $percentage = 15;

    $discount = $cart->get_subtotal() * $percentage / 100; // Calculation

    // Applying discount
    $cart->add_fee( sprintf( __("Affiliate Discount (%s)", "woocommerce"), $percentage . '%'), -$discount, true );
}

代码在您的事件子主题(或事件主题)的 functions.php 文件中。经过测试并有效。