DRF框架基础六之基于GenericAPIView的十大接口，视图集，路由组件，三大认证规则
准备工作
models.py
from django.db import models
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# 基类：是抽象的(不会完成数据库迁移)，目的是提供共有字段的
class BaseModel(models.Model):
is_delete = models.BooleanField(default=False)
updated_time = models.DateTimeField(auto_now_add=True)
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class Meta:
abstract = True # 必须完成该配置
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class Book(BaseModel):
name = models.CharField(max_length=64)
price = models.DecimalField(max_digits=5, decimal_places=2, null=True)
image = models.ImageField(upload_to='img', default='img/default.png')
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publish = models.ForeignKey(to='Publish', related_name='books', db_constraint=False, on_delete=models.DO_NOTHING)
authors = models.ManyToManyField(to='Author', related_name='books', db_constraint=False)
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serializers.py
from rest_framework import serializers
from . import models
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# 只有在资源需要提供群改，才需要定义ListSerializer，重写update方法
class BookListSerializer(serializers.ListSerializer):
def update(self, queryset, validated_data_list):
return [
self.child.update(queryset[index], validated_data) for index, validated_data in enumerate(validated_data_list)
]
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class BookModelSerializer(serializers.ModelSerializer):
class Meta:
list_serializer_class = BookListSerializer
model = models.Book
fields = ['name', 'price', 'image', 'publish', 'authors', 'publish_name', 'author_list']
extra_kwargs = {
'publish': {
'write_only': True
},
'authors': {
'write_only': True
}
}
基于GenericAPIView的十大接口
views.py
# 十大接口：
# 1）单查、群查、单增、单整体改、单局部改都可以直接使用
# 2）单删不能直接使用，因为默认提供的功能是删除数据库数据，不是我们自定义is_delete字段值修改
# 3）除了群查以为的接口，都要自己来实现
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# 注：给序列化类context赋值{'request': request}，序列化类就可以自动补全后台图片链接
from rest_framework.generics import GenericAPIView
from rest_framework import mixins
from . import models, serializers
from rest_framework.response import Response
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class BookV1APIView(GenericAPIView,
mixins.RetrieveModelMixin,
mixins.ListModelMixin,
mixins.CreateModelMixin,
mixins.UpdateModelMixin):
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queryset = models.Book.objects.filter(is_delete=False).all()
serializer_class = serializers.BookModelSerializer
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def get(self, request, *args, **kwargs):
if 'pk' in kwargs:
return self.retrieve(request, *args, **kwargs) # 单查
# queryset = models.Book.objects.filter(is_delete=False).all()
# 注：给序列化类context赋值{'request': request}，序列化类就可以自动补全后台图片链接
# serializer = serializers.BookModelSerializer(queryset, many=True, context={'request': request})
# return Response(serializer.data)
return self.list(request, *args, **kwargs) # 群查
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def post(self, request, *args, **kwargs):
if not isinstance(request.data, list):
return self.create(request, *args, **kwargs)
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serializer = self.get_serializer(data=request.data, many=True)
serializer.is_valid(raise_exception=True)
self.perform_create(serializer)
headers = self.get_success_headers(serializer.data)
return Response(serializer.data, status=201, headers=headers)
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def delete(self, request, *args, **kwargs):
pk = kwargs.get('pk')
if pk:
pks = [pk]
else:
pks = request.data
try:
rows = models.Book.objects.filter(is_delete=False, pk__in=pks).update(is_delete=True)
except:
return Response(status=400)
if rows:
return Response(status=204)
return Response(status=400)
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def put(self, request, *args, **kwargs):
if 'pk' in kwargs:
return self.update(