The HTTP Diagram

ResourceMachine implements the Webmachine v3 HTTP decision diagram. This diagram encodes the full state machine for correct HTTP response generation.

v3 Diagram

Reading the Diagram

Each box is a decision point. The label on each arrow is the return value from the corresponding resource method that leads down that branch. Follow the arrows from v3b13 (top) to any of the terminal status codes (leaves).

When you override a resource method, you are controlling which branch is taken at that node. All other nodes fall through to their defaults.