擅长:python、mysql、java
<p>对于<a href="https://docs.djangoproject.com/en/1.10/topics/db/queries/#backwards-related-objects" rel="nofollow noreferrer">backward relationships</a>,可以使用<code><lowercase_related_model_name>_set</code>获取相关模型。例如,您可以尝试以下方法:</p>
<pre><code>Lesson.objects.fitler(chapter=chapter).order_by('chapter__userchapterscore_set__score')
</code></pre>