from rest_framework import serializers


class TestSerializer(serializers.Serializer):

    name = serializers.CharField(max_length=20, required=True)
    code = serializers.CharField(max_length=20, required=True)

from django.http import HttpResponse, JsonResponse
from django.contrib.auth import authenticate
from rest_framework import status
from rest_framework.views import APIView
from rest_framework.response import Response

from school.serializers.school import TestSerializer


class TestView(APIView):

    def get(self, request):
        # 获取auth中的用户
        user = request.user
        if user.is_authenticated:   # is_superuser
            return HttpResponse(user.username + ‘已授权‘)
        return HttpResponse(‘未授权‘)

    def post(self, request):
        serializer = TestSerializer(data=request.data)

        if serializer.is_valid():
            username = serializer.validated_data.get("name", "")
            password = serializer.validated_data.get("code", "")

            # 调用authenticate方法
            user = authenticate(username=username, password=password)

            if user is not None:
                content = {
                    "status": True,
                    "message": "账户正确"
                }
                return JsonResponse(data=content, status=status.HTTP_200_OK)
            else:
                content = {
                    "status": False,
                    "message": "账号或者密码不正确"
                }
                return JsonResponse(data=content, status=status.HTTP_200_OK)
        else:
            return Response(data=serializer.errors)

from django.db import models


class School(models.Model):
    name = models.CharField(max_length=32, verbose_name="名称")
    code = models.CharField(max_length=16, verbose_name="代码")
    location = models.CharField(max_length=128, verbose_name="地址")


class Student(models.Model):
    name = models.CharField(max_length=32, verbose_name="姓名")
    age = models.IntegerField(verbose_name="年龄")
    school = models.ForeignKey(to=School,verbose_name="学校", on_delete=models.CASCADE)

# -*- coding: utf-8 -*-
from rest_framework import serializers

from school.models import Student, School


class StudentSerializer(serializers.ModelSerializer):
    # 多对多时添加参数 many=True
    school = serializers.SlugRelatedField(read_only=False, slug_field="name", queryset=School.objects.all())
    # address = serializers.CharField(source="school.address", default=None)

    def create(self, validated_data):
        # some actions
        instance = super().create(validated_data)
        return instance

    def update(self, instance, validated_data):
        user = self.context[‘request‘].user        # 请求的用户
        username = self.context[‘request‘].data.get(‘username‘)     # 请求的参数username
        instance.name = validated_data[‘name‘]      # 请求的参数name
        # some actions
        instance.save()
        return instance

    class Meta:
        model = Student
        fields = (‘id‘, ‘name‘, ‘age‘, ‘school‘)
        read_only_fields = (‘id‘, ‘age‘)

address = serializers.CharField(source="school.address", default=None)

status = serializers.SerializerMethodField()

def get_status_verbose(self, obj):
    # obj表示当前模型对象
    return obj.get_status_display()