Flash5/flash-extensions/flash-ext-view/docs/migration-from-legacy-view.md

Migration from Legacy View API

Legacy API (@View, ViewEngine, Renderer, Template) has been removed.

Replace annotations

• @View("page") -> @Page("page")
• @View(value = "x", fragment = true) -> @Partial(template = "x")

@Page and @Partial must be declared on classes extending ViewHandler.

Replace handler return contract

Before (legacy):

public Object handle(Request req, Response res) {
    return Map.of("name", "Flash");
}

Now:

public ViewModel render(Request req) {
    return ViewModel.of("name", "Flash");
}

Replace engine integration

• Implement ViewEngineAdapter directly.
• Or use ViewEngineType.THYMELEAF.