Drupal: Upgrade Node strategy

Question

I effectively want two nodes:

1. Normal Node
2. Premium Node

The only difference will be that the premium node can take more images and a few other features. What is the best strategy to go about this?

1. have two distinct nodes with the differences
2. have one nodes and somehow find a to apply an UPGRADED attribute to it?

I would prefer (b), as I want users to be able to upgrade nodes. And migrating a normal node to a premium node will be very difficult.

Any idea how I can accomplish b?

Answer 1

You might be able to implement (b) as two different input filters - one for non-upgraded and one for upgraded. Then "upgrading" the node would be as simple as changing the input filter applied to its contents.

Answer 2

I would create two different content types (CCK), and either write custom code to translate between the two or use a module like http://drupal.org/project/node%5Fconvert (in order to upgrade a node); it might be complicated at first, but you would have the advantage of being able to apply all of your restrictions (allowed image count, permissions etc) on a per-content type basis.