{%- if ok %}<div class="val-ok">&check; Valid &mdash; this payload conforms to the action's schema.</div>
{%- elif msg %}<div class="val-bad">{{ msg }}</div>
{%- else %}
<div class="val-bad">
  <div class="val-h">{{ errors|length }} validation error(s)</div>
  <ul class="val-list">{% for e in errors %}<li>{{ e }}</li>{% endfor %}</ul>
</div>
{%- endif %}