Error Handling

FlowError unifies not-found, loader failures, and render errors into consistent error pages.

FlowError variants

• FlowError::NotFound — 404, no matching route
• FlowError::Loader(LoaderError) — #[load] failed with status + message
• FlowError::Render(String) — page render panic or explicit error

not_found_page

FlowApp::new()
    .not_found(|| not_found_page())
    .serve(FlowServeOptions::default())
    .await

error_page

match use_home_load() {
    LoadValue::Ok(data) => render_home(&data),
    LoadValue::Err(e) => error_page(&FlowError::Loader(e)),
    LoadValue::Pending => view! { {stream_slot("home")} },
}

LoaderError

LoaderError::new(404, "User not found")
    LoaderError::new(500, "Database unavailable")

Status codes

FlowError::status() returns the HTTP status — 404 for NotFound, the loader status for Loader errors, 500 for Render.