你可以覆盖序列化__init__方法，并fields根据查询参数动态设置属性。你可以在request整个上下文中访问对象，并将其传递给序列化程序。
这是此问题的Django Rest Framework文档示例的复制和粘贴：
from rest_framework import serializers
class DynamicFieldsModelSerializer(serializers.ModelSerializer):
"""
A ModelSerializer that takes an additional `fields` argument that
controls which fields should be displayed.
"""
def __init__(self, *args, **kwargs):
# Instantiate the superclass normally
super(DynamicFieldsModelSerializer, self).__init__(*args, **kwargs)
fields = self.context['request'].query_params.get('fields')
if fields:
fields = fields.split(',')
# Drop any fields that are not specified in the `fields` argument.
allowed = set(fields)
existing = set(self.fields.keys())
for field_name in existing - allowed:
self.fields.pop(field_name)
class UserSerializer(DynamicFieldsModelSerializer, serializers.HyperlinkedModelSerializer):
class Meta:
model = User
fields = ('url', 'username', 'email')
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