from rest_framework import serializers
class CommentSerializer(serializers.Serializer):
email = serializers.EmailField()
content = serializers.CharField(max_length=200)
created = serializers.DateTimeField()
def restore_object(self, attrs, instance=None):
“””
Given a dictionary of deserialized field values, either update
an existing model instance, or create a new model instance.
“””
if instance is not None:
instance.email = attrs.get(’email’, instance.email)
instance.content = attrs.get(‘content’, instance.content)
instance.created = attrs.get(‘created’, instance.created)
return instance
return Comment(**attrs)
比如，这其中的attrs是？
这是python的参数列表，两个星号是可变参数。
restore_object接收到的attrs参数是dict类型，传递到Comment函数的时候前面加两个星号转成可变参数列表。
比如attrs = {‘a’:1, ‘b’:2}
Comment函数实际的调用会变成：Comment(a=1, b=2)
attr 是函数的参数 具体是啥要看你自己的定义了
玩蛇网文章，转载请注明出处和文章网址：https://www.iplaypy.com/wenda/wd19254.html
相关文章 Recommend
发布者：全栈程序员-站长，转载请注明出处：https://javaforall.net/180697.html原文链接：https://javaforall.net
