On click, add this class to my object

onClick-class.cljs

(ns projectName.core
    (:require
      goog.object
      [om.next :as om :refer-macros [defui]]
      [om.dom :as dom]
      [untangled.dom :as udom]
      ))

(defui Root
    Object
    (initLocalState [this]
      {:show-style-class false})
    (render [this]
      (println (om.next/get-state this))
      (dom/div #js {:className (udom/toggle-class (om/get-state this)
                                :show-style-class "normal classes"
                                :when-false ""
                                :when-true "your-fancy-class")
                    :onClick #(om/update-state! this update :show-style-class not )})))