Simplified.

templates/block/block--views-block--who-s-online-who-s-online-block.html.twig → templates/block/block--quisuisje.html.twig

@@ -25,14 +25,21 @@
  * @see template_preprocess_block()
  */
 #}
-{{  dump(user) }}
-<div{{ attributes }}>
-  {{ title_prefix }}
-  {% if label %}
-    <h2{{ title_attributes }}>{{ label }}</h2>
-  {% endif %}
-  {{ title_suffix }}
-  {% block content %}
-    {{ content }}
-  {% endblock %}
+<div{{ attributes.addClass('panel panel-default') }}>
+  <ul>
+    <li>Id: {{ user.id }}</li>
+    <li>Name: {{ user.getAccountName }}</li>
+    <li>Display name: {{ user.getDisplayName }}</li>
+    <li>Email: {{ user.getEmail }}</li>
+    <li>Language: {{ user.getPreferredLangcode }}</li>
+    <li>Last access: {{ user.getLastAccessedTime }}</li>
+    <li>Roles:
+      <ul>
+        {% for role in user.getRoles(true) %}
+          <li>{{ role }}</li>
+        {% endfor %}
+      </ul></li>
+    <li>Time zone: {{ user.getTimezone }}</li>
+    <li>Username: {{ user.getUsername }}</li>
+  </ul>
 </div>