How to disable certain payment methods? (when Max Order Value exceeded)

[annnika]

Hello again Linda et.al. - a similar problem as above!

Have all the functions that I can extract values from $_SESSION['cart'] been documented somewhere?!

My customer would like to disable credit card payment method (sagepay) when no valid shipping zones available for the shipping address/destination, allowing only Purchase Order.

So similar as above, but now I would need to see *in pseudo code*:

if ($_SESSION['cart']->check_if_valid_shippingzones_function_of_some_kind() == false)) {
// i.e. no valid shipping zones for this destination
// disable credit card payment method
$this->enabled = false;
} else {
$this->enabled = ((MODULE_PAYMENT_SAGEPAY_FORM_STATUS == 'True') ? true : false);
}

Thanks!
annika

[Ajeh]

If there isn't a valid shipping method selected then you will never get to the checkout_payment ...

Can you clarify what happens when you do not have a valid shipping address and how you are getting to the checkout_payment?

[annnika]

Yes sorry, I also have always available the 'walk-in' i.e. 'storepickup' option (for all destinations & countries), and I have renamed it 'Arrange shipping after order', so that even when there are no valid shipping destinations, customer can go forward with this 'storepickup' and that's when only purchase order should be available for payment, no credit cards.

How about something along the lines of (this doesn't work though, not sure why?!):

includes/modules/payment/sagepay_form.php

// ANNIKA disabling the card payment option when chosen shipping method is "Arrange shipping after order"

if ($rates[$i]['module'] == 'storepickup')
{ $this->enabled = false;
} else {
$this->enabled = ((MODULE_PAYMENT_SAGEPAY_FORM_STATUS == 'True') ? true : false);
}

// ANNIKA END

Thanks!
annika