擅长:python、mysql、java
<p>我只是添加了一个额外的模板标记,如下所示:</p>
<pre><code>@register.filter
def in_category(things, category):
return things.filter(category=category)
</code></pre>
<p>然后我可以:</p>
<pre><code>{% for category in categories %}
{% for thing in things|in_category:category %}
{{ thing }}
{% endfor %}
{% endfor %}
</code></pre>