【愚公系列】2022年04月 Python教学课程 69-DRF框架之五个扩展类视图的子类视图

from rest_framework.response import Response
from rest_framework.mixins import ListModelMixin, CreateModelMixin, RetrieveModelMixin, UpdateModelMixin, \
    DestroyModelMixin
from rest_framework.generics import GenericAPIView
from book.models import BookInfo
from drf_book.serializer import BookSerializer

from rest_framework.generics import ListCreateAPIView, RetrieveUpdateDestroyAPIView


class BooksMixinView(ListCreateAPIView):
    """
        获取所有图书和保存图书
    """
    # 指定查询集属性
    queryset = BookInfo.objects.all()
    # 指定序列化器
    serializer_class = BookSerializer


class BookMixinView(RetrieveUpdateDestroyAPIView):
    """
           获取单一图书数据
           更新图书
           删除图书
       """
    # 指定查询集属性
    queryset = BookInfo.objects.all()
    # 指定序列化器
    serializer_class = BookSerializer

# 源代码封装基本序列化器
class BaseSerialzier(object):
    def __init__(self, instance=None, data=None):
        """
            初始化方法
        :param instance:  对象
        :param data: 验证的数据
        """
        self.instance = instance
        self.v_data = data

    def is_valid(self):
        """
            验证方法
        :return:
        """
        self.validate_data = self.validate(self.v_data)
        return self.validate_data

    def save(self):
        """
            保存或更新
        :return:
        """

        if self.instance is not None:
            self.instance = self.update(self.instance, self.validate_data)
        else:
            self.instance = self.create(self.validate_data)
        return self.instance

    @property
    def data(self):
        """
            获取序列化结果方法
        :return:
        """
        return {'btitle': 'python'}

    def validate(self, atter):
        """
            多个字段验证
        :return:
        """
        pass

    def create(self, validate_data):
        """
            保存数据
        :return:
        """

        pass

    def update(self, instance, validate_data):
        """
            更新数据
        :return:
        """
        pass

from baseserilaizer import BaseSerialzier
class BookSerializer(BaseSerialzier):
    """
        自定义序列化器
    """

    def validate(self, atter):
        # 字段验证逻辑
        print(atter)
        return atter

    def update(self, instance, validate_data):
        print('update')
        print(validate_data)
        return instance

    def create(self, validate_data):
        print('create')
        return validate_data

from serializer import BookSerializer
from genericapiview import GenericAPIView
class BookView(GenericAPIView):
    queryset = {'btitle':'python'}
    serializer_class = BookSerializer


    def post(self,request):

        # 1、获取前端数据
        data=request.get('data')
        # 2、验证数据
        ser=self.get_serializer(data=data)
        ser.is_valid()
        # 3、保存数据
        ser.save()
        # 4、返回结果
        return ser.data



request={'data':{'btitle':'python'}}

data=BookView().post(request)
print(data)