django 使用内建过滤器实现文章摘要效果

<div class="list-group">
{% if articles %}
{% for article in articles.object_list %}
<li class="list-group-item">
<h3>
<a href="{% url 'blog:detail' article.id %}" >
{{ article.title }} <br /></a>
</h3>
<!--显示摘要-->
{{ article.content|truncatechars_html:100 }}
<!--ending 摘要-->
<a href="{% url 'blog:detail' article.id %}" >
阅读全文</a>
<br />
{{ article.author }}
{% endfor %}
{% else %}
<p>No articles are available.</p>
{% endif %}
</li>
</div>