#源码

 class HyperlinkedModelSerializer(ModelSerializer):

    serializer_related_field = HyperlinkedRelatedField

    def get_default_field_names(self, declared_fields, model_info):

        # 覆盖重写了ModelSerializer中的方法

        # 只是在 第一个变量使用了url名字

        return (

            [self.url_field_name] +

            list(declared_fields) +

            list(model_info.fields) +

            list(model_info.forward_relations)

        )

    def build_nested_field(self, field_name, relation_info, nested_depth):

        # 覆盖重新ModelSerializer方法，嵌套的子类依然继承的是HyperLinkedModelSerializer

        class NestedSerializer(HyperlinkedModelSerializer):

            class Meta:

                model = relation_info.related_model

                depth = nested_depth - 1

                fields = '__all__'

        field_class = NestedSerializer

        field_kwargs = get_nested_relation_kwargs(relation_info)

        return field_class, field_kwargs

 #示例

 # 继承HyperlinkedModelSerializer

 class TextSerializer(HyperlinkedModelSerializer):

    auth = AuthSerializer()

    class Meta:

        model = Text

        # 设置url字段

        fields = ('url','id', 'title', 'content', 'auth', 'category', 'created')

'''

使用HyperLinkedModelSerializer生成的url，字段名默认是url

如果想要修改的话需求在setting中指定,比如我们要把url字段名改成to_link

'''

REST_FRAMEWORK = {

    'URL_FIELD_NAME':'to_link'

}