controller return json to vue via twig; init vue App

src/Bundle/ChillActivityBundle/Resources/views/Activity/editAccompanyingCourse.html.twig

@@ -5,16 +5,21 @@
 {% block title  'Update activity'|trans %}
 
 {% block content %}
+    <div id="activity"></div> {# <=== vue component #}
     {% include 'ChillActivityBundle:Activity:edit.html.twig' %}
+    {{ dump() }}
 {% endblock %}
 
 {% block js %}
     <script src="{{ asset('build/async_upload.js') }}" type="text/javascript"></script>
     <script type="text/javascript">
         chill.displayAlertWhenLeavingModifiedForm('form[name="{{ edit_form.vars.form.vars.name }}"]', '{{ "You are going to leave a page with unsubmitted data. Are you sure you want to leave ?"|trans }}');
+        window.activity = {{ activity_json|json_encode|raw }}; 
     </script>
+    {{ encore_entry_script_tags('vue_activity') }}
 {% endblock %}
 
 {% block css %}
     <link rel="stylesheet" href="{{ asset('build/async_upload.css') }}"/>
+    {{ encore_entry_link_tags('vue_activity') }}
 {% endblock %}