第一季 | UpdateModelMixin 了解下，实现用户信息修改

from rest_framework.mixins import UpdateModelMixin

import re
import datetime
from rest_framework.validators import UniqueValidator
from django.conf import settings

class UserInfoUpdateSerializer(serializers.ModelSerializer):
    """
    修改个人信息
    """
    name = serializers.CharField(required=False, max_length=32,
                                     validators=[UniqueValidator(queryset=User.objects.all(), message="该昵称已经存在")],
                                     error_messages={"max_length": "昵称不能超过32个字符"}, label="昵称", help_text="修改昵称不超过32个字符")
    gender = serializers.IntegerField(required=False, default=1, error_messages={"max_value": "性别类型0或1"}, label="性别", help_text="性别0男/1女")
    birthday = serializers.DateField(required=False, default=datetime.date.today(), label="生日", help_text="生日/年月日")
    mobile = serializers.CharField(required=False, max_length=11,
                                      validators=[UniqueValidator(queryset=User.objects.all(), message="该手机号已经存在")],
                                      error_messages={"max_length": "手机号不能超过11个字符"}, label="手机号",
                                      help_text="修改手机号不超过11个字符")
    email = serializers.CharField(required=False, allow_blank=True, max_length=32,
                                  validators=[UniqueValidator(queryset=User.objects.all(), message="该邮箱已经存在")],
                                  error_messages={"max_length": "邮箱不能超过32个字符"}, label="邮箱", help_text="修改邮箱不超过32个字符")

    def validate_email(self, email):
        if email:
            if not re.match(settings.REGEX_EMAIL, email):
                raise serializers.ValidationError({"error": "邮箱非法"})
        return email

    def update(self, instance, validated_data):
        """
        1.修改个人信息昵称、性别、生日
        2.修改手机号
        3.修改邮箱
        """
        if validated_data.get('name'):
            instance.name = validated_data.get('name', instance.name)
        if validated_data.get('gender'):
            instance.gender = validated_data.get('gender', instance.gender)
        if validated_data.get("birthday"):
            instance.birthday = validated_data.get('birthday', instance.birthday)
        if validated_data.get('mobile'):
            instance.mobile = validated_data.get('mobile', instance.mobile)
        if validated_data.get('email'):
            instance.email = validated_data.get('email', instance.email)
        instance.save()
        return instance

    class Meta:
        model = User
        fields = ("id", "name", "mobile", "email", "gender", "birthday")
        read_only_fields = ("id",)

REGEX_EMAIL = r"^[A-Za-z\d]+([-_.][A-Za-z\d]+)*@([A-Za-z\d]+[-.])+[A-Za-z\d]{2,4}$"

from rest_framework.authentication import SessionAuthentication
from rest_framework.permissions import IsAuthenticated
from rest_framework_jwt.authentication import JSONWebTokenAuthentication

url(r"^api-auth/", include("rest_framework.urls", namespace="rest_framework")),