index.html

{% extends "base.html" %}

{% block content %}

<h1>List of URLs</h1>

{% if url_list %}
    <ul>
    {% for u in url_list %}
      <li>
        <a href="/url={{ u.id }}">Show details</a>, or follow
        <a href="/{{ u.id }}" target="_blank"><code>{{ u.target }}</code></a>
      </li>
    {% endfor %}
    </ul>
{% else %}
    <p>No URLs are available.</p>
{% endif %}

{% endblock %}