Authorize.net Integration Using Direct Post

Here we have a demo of Authorize.net's new Direct Post Method payment gateway. It was a hard-fought battle because their documentation is just plain wrong in some places. Anyway, this pretty much works; sometimes you'll get duplicate transaction errors if it gets hit repeatedly. Of course, you would want to have a custom form for your own implementation, but this should give you the general idea of how to integrate DPM in MODx. Log in to the Manager (guest - guestuser) and take a look at the three resources and the corresponding three snippets. Oh, I've moved my sensitive keys into a file outside of the web root. It's only a test/sandbox account anyway.