Recently I was working with the Drupal services module, and ran into a few hang ups. For my project I needed a rest service that could export xml that matched a specific format, and consume xml and store it in the database for later processing. To do this I created a custom services resource, this was pretty straight forward. I found a few really great sites that explain how this is done. This one in particular is quite helpful. It was when I attempted to customize the output and input that I ran into some hang ups. When attempting to research more about how it is done, I found very little information posted anywhere. In this brief tutorial I will outline how I was able to achieve my goals, and hopefully save you some time.
By Peter Bliss, Senior Developer, January 30, 2013