Westpac HPP module problems return back to ZC

[kinkuma]

Hi All,

So I running ZC 1.3.8, and have had a look through the forums, but no luck, so I thought I'd start my own thread. I am trying to develop a payment module for the Westpac Quickweb hosted payment page. I have somewhat cannabalised the NAB transact & paystation payment modules and written in my own stuff and have it about 90% of the way there, but have run into a snag.

The Wesptac HPP requires some sort of customer ID & the amount to be passed to it, which I have it doing and that all works fine. The problem occurs at the end when the customer has to return back to our site (where ZC is hosted). The return is handled via a link after the payment has been made and I am able to customise that link by passing the returnURL in a POST from my payment module.

Obviously ZC needs some sort of session reference to understand that this is a returning customer who has not yet "finalised" their order so that it can create an order number and register it so that it can be viewed via the admin panel (and clear the customer's shopping cart). I have been unable to get it to do this so far.

So, this leads me to the following questions:
1) What is the appropriate session reference I need (E.G. $_SESSION['customer_id'] ?
2) Can session reference just be handed back to ZC via the URL (E.G. ~check_process&=$_SESSION['customer_id'] or does it need to be used in a POST or GET and stored in a particular variable name ? (This is coming back from the HPP to ZC)
3) Is there anything I am missing as far as how the process should work?
4) Any tips/pointers ?

Thank you kindly for reading, and I would greatly appreciate any help that anyone is able to provide. Cheers.

[kinkuma]

Still having trouble with this, no one has any thoughts or can answer my questions ?

[kinkuma]

All good, I resolved my issue and now payments work properly. If anyone ever needs a module for Westpac Quickweb or has any questions, please feel free to PM me!