controller return json to vue via twig; init vue App

src/Bundle/ChillActivityBundle/Resources/public/vuejs/Activity/store.js

@@ -0,0 +1,31 @@
+import 'es6-promise/auto';
+import { createStore } from 'vuex';
+
+const debug = process.env.NODE_ENV !== 'production';
+//console.log('window.activity', window.activity);
+
+const store = createStore({
+   strict: debug,
+   state: {
+     activity: window.activity
+   },
+   getters: {
+
+   },
+   mutations: {
+      addPerson(state, payload) {
+
+      }
+   },
+   actions: {
+      addPerson() {
+        //let el = document.getElementById('form['activity']['xxx']['xxxx']');
+        //let option = document.createElement('option');
+        //option.value = person.id;
+        //el.appendChild(option);
+        commit('addPerson', payload)
+     }
+  }
+});
+
+export default store;