擅长:python、mysql、java
<p>您可以重写<code>get_queryset</code>方法来构建自定义查询集</p>
<pre><code>def get_queryset(self):
return Portfolio.objects.order_by('?')[:6]
</code></pre>
<blockquote>
<p>Note: order_by('?') queries may be expensive and slow, depending on
the database backend you’re using.</p>
</blockquote>