根据Woocommerce中的延期交货项目显示隐藏支付网关

Question

I'm need to hide paypal when there's any backordered item on cart or hide cod if there's not any item to be backordered. My problem here is if there's a item that's backorder together with one that is not, I end up whitout a payment processor

 add_filter( 'woocommerce_available_payment_gateways', 'backordered_items_hide_cod', 90, 1 );
function backordered_items_hide_cod( $available_gateways ) {
    // Only on front end
    if ( is_admin() )
        return;

    // Loop through cart items
    foreach( WC()->cart->get_cart() as $cart_item ){
        if( $cart_item['data']->is_on_backorder( $cart_item['quantity'] ) ) {
            // Hide payment gateway
            unset($available_gateways['paypal']);
            } else {
            unset($available_gateways['cod']);
            break; // Stop the loop
        }
    }

    return $available_gateways;
}

Answer 1

The following function will hide paypal for any backordered item found or if there is no backordered items it will hide COD instead:

add_filter( 'woocommerce_available_payment_gateways', 'backordered_items_hide_cod', 90, 1 );
function backordered_items_hide_cod( $available_gateways ) {
    // Only on front end
    if ( is_admin() )
        return;

    $has_a_backorder = false;

    // Loop through cart items
    foreach( WC()->cart->get_cart() as $cart_item ){
        if( $cart_item['data']->is_on_backorder( $cart_item['quantity'] ) ) {
            $has_a_backorder = true;
            break;
        } 
    }

    if( $has_a_backorder ) {
        unset($available_gateways['paypal']);
    } else {
        unset($available_gateways['cod']);
    }

    return $available_gateways;
}

Code goes in function.php file of your active child theme (active theme). Tested and works.