flask/examples/apishowcase/templates/hello.html

{% extends "layout.html" %}
{% block body %}
  {% if name %}
  <h2>Hello {{ name }}!</h2>
  {% else %}
  <h3>Hello Stranger …</h3>
  <form action="{{ url_for('hello_user') }}" method="post">
    <p>… What's your name?
    <p><input type=text name=name size=30>
       <input type=submit value="That's me">
  </form>
  {% endif %}
{% endblock %}