add_fee with variable value

Try

function woo_add_cart_fee() {
$name = 'Valor de envío';
if ( isset($_GET["costoenvio"]) ) {
$fee = $_GET["costoenvio"];
WC()->cart->add_fee( $name, $fee, false );
}
}

add_action( 'woocommerce_cart_calculate_fees', 'woo_add_cart_fee' );

Hi @superkot, thanks for your response but dont work. The same thing keeps happening, in the review order it is reflected but at the moment of paying it does not add that value.

I found this:

The fees API is not persistent. You need to add your fee everytime the woocommerce_cart_calculate_fees hook runs or it will be lost.

But I dont apply this.

I tried it at my test environment and it worked.
You need to store values in sessions then:

function woo_add_cart_fee() {

$name = 'Valor de envío';
session_start();

if ( isset($_GET["costoenvio"]) ) {
$_SESSION['costo'] = $_GET["costoenvio"];
}

if ( isset($_SESSION['costo']) ) {
$fee = $_SESSION['costo'];
WC()->cart->add_fee( $name, $fee, false );
}

}

add_action( 'woocommerce_cart_calculate_fees', 'woo_add_cart_fee' )

Hi, now its work fine. Thanks so so much!!!

I have a question, that session in which moment it expires? I made two purchases and loaded the same value unless it indicated a new one.

Default session expires after 24 minutes. It is defined within php.ini file on your server. Session is individual, it works only for the same device & browser. So if you expect scenario where your customers could be making repeating orders from the same device within 24 minutes, you need to clean the session after order is placed.

Hi, you really helped me a lot. I will look over the removal session after each order.

Thanks, @superkot!

I’m going to mark this as resolved – if you have any further questions, you can start a new thread.

Whoops, forgot to mark this as resolved!