fixes and improvements in broker and render

render.go

@@ -34,10 +34,10 @@ func (a *App) JSON(w http.ResponseWriter, code int, v any) {
 	json.NewEncoder(w).Encode(v)
 }
 
-func (a *App) HTML(w http.ResponseWriter, code int, name string, td *TemplateData) {
+func (a *App) HTML(w http.ResponseWriter, code int, layout, page string, td *TemplateData) {
 	w.Header().Set("Content-Type", "text/html; charset=utf-8")
 	w.WriteHeader(code)
-	err := a.Templates.Template(w, name, td)
+	err := a.Templates.Template(w, layout, page, td)
 	if err != nil {
 		slog.Error("error rendering template", "error", err)
 		http.Error(w, err.Error(), http.StatusInternalServerError)
@@ -45,12 +45,11 @@ func (a *App) HTML(w http.ResponseWriter, code int, name string, td *TemplateDat
 	}
 }
 
-func (a *App) RenderHTML(name string, td *TemplateData) (string, error) {
-	sw := newStringWriter()
-	err := a.Templates.Template(sw, name, td)
+func (a *App) RenderComponent(name string, td *TemplateData) (string, error) {
+	result, err := a.Templates.RenderComponent(name, td)
 	if err != nil {
-		slog.Error("error rendering template", "error", err)
+		slog.Error("error rendering component", "component", name, "error", err)
 		return "", err
 	}
-	return sw.builder.String(), nil
+	return result, nil
 }