All Implemented Interfaces and Traits:

RuntimeHintsRegistrar

public class ControllerRuntimeHints
extends java.lang.Object
implements RuntimeHintsRegistrar

Registers the controller API a request is dispatched through.

A controller action reaches these through Groovy's dynamic dispatch, which reads a type's declared methods to choose an overload. An ahead-of-time image keeps only the members something asks for, so without these hints the methods are absent and dispatch fails at the point of use -- on the request that first takes that path, rather than at start-up.

Recording this here rather than leaving it to a tracing agent matters because the agent only ever sees the paths a developer happened to exercise: the method check below is reached only by POST, PUT and DELETE, so a walk of an application's pages never records it and the failure appears the first time someone submits a form.

Since:

8.0