擅长:python、mysql、java
<p>您可以使用自定义验证声明自己的<code>SiblingField</code>,然后在<code>FatherSerializer</code>上为<code>brother</code>使用它,在<code>ChildSerializer</code>上为<code>sister</code>使用它</p>
<pre><code>class SiblingField(serializers.CharField):
<add your custom validation methods here>
class FatherSerializer(...):
brother = SiblingField()
class ChildSerializer(FatherSerializer):
sister = SiblingField()
</code></pre>