擅长:python、mysql、java
<p>假设<code>username</code>是唯一的:</p>
<pre><code>UsuarioModel = UserProfile.objects.get(user__username=UsuarioElegido)
</code></pre>
<p>使用<code>__</code>(双下划线)到<a href="https://docs.djangoproject.com/en/1.8/topics/db/queries/#lookups-that-span-relationships" rel="nofollow">follow relations in lookups</a>。在</p>