I'm building out a project management/project organization site with Drupal. The basic content types will be:
- Milestones (which belong to a project), and
- Tasks (which belong to a milestone)
I've built the Project content type. That was easy. I built the Milestone content type, and using the Node Reference module, I was able to access all of the Projects right in the from. Nice! But now Tasks get a bit tricky. Using the same technique, I could reference all of the Milestones in the Tasks form, but I really only want to see the Milestones that are associated with a specific Project. It seems that I would need to employ some kind of filter. How?
What's the best approach here? I have no module restrictions and am using the most current version of Drupal (7.8).