day74作业
day74作业
models.py
from django.db import models
Create your models here.
class BaseModel(models.Model):
is_delete = models.BooleanField(default=False)
created_time = models.DateTimeField(auto_now_add=True)
class Meta:
abstract = True
class Car(BaseModel):
name = models.CharField(max_length=64, blank=True)
img = models.ImageField(upload_to='img', default='img/default.jpg')
price = models.DecimalField(max_digits=10, decimal_places=2)
store = models.ForeignKey(to='CarStore', related_name='cars', on_delete=models.DO_NOTHING, db_constraint=False, null=True)
sponsors = models.ManyToManyField(to='Sponsor', related_name='cars')
def __str__(self):
return self.name
@property
def icon(self):
from django.conf import settings
return "%s%s%s" % (settings.BASE_URL, settings.MEDIA_URL, self.img)
@property
def store_info(self):
return {
'name': self.store.name,
'address': self.store.address
}
@property
def sponsor_list(self):
sponsor_tmp_list = []
sponsors = self.sponsors.all()
for sponsor in sponsors:
sponsor_dic = {
'name': sponsor.name
}
try:
sponsor_dic['phone'] = sponsor.detail.phone
except:
sponsor_dic['phone'] = '无'
sponsor_tmp_list.append(sponsor_dic)
return sponsor_tmp_list
class CarStore(BaseModel):
name = models.CharField(max_length=64)
address = models.CharField(max_length=64)
def __str__(self):
return self.name
class Sponsor(BaseModel):
name = models.CharField(max_length=64)
def __str__(self):
return self.name
class SponsorDetail(BaseModel):
phone = models.CharField(max_length=64)
detail = models.OneToOneField(to=Sponsor, related_name='detail', on_delete=models.CASCADE, db_constraint=False)
二次封装response.py
from rest_framework.response import Response
class APIResponse(Response):
def init(self, status=0, msg='ok', results=None, http_status=None,
headers=None,
exception=False, content_type=None, **kwargs):
data = {
'status': status,
'msg': msg
}
if results is not None:
data['results'] = results
data.update(**kwargs)
super().__init__(data=data, status=http_status, headers=headers, exception=exception, content_type=content_type)
exception.py
from rest_framework.views import exception_handler as drf_exception_handler
from rest_framework.response import Response
def exception_handler(exc, context):
response = drf_exception_handler(exc,context)
detail = '%s - %s - %s' % (context.get('view'), context.get('request').method, exc)
if not response:
response = Response({
'detail': detail
})
else:
response.data = {'detail': detail}
return response
serializer.py
from rest_framework import serializers
from . import models
class CarListSerializer(serializers.ListSerializer):
def create(self, validated_data):
return super().create(validated_data)
def update(self, instance_list, validated_data_list):
return [
self.child.update(instance_list[index], attrs) for index, attrs in enumerate(validated_data_list)
]
class StoreListSerializer(serializers.ListSerializer):
def create(self, validated_data):
return super().create(validated_data)
def update(self, instance_list, validated_data_list):
return [
self.child.update(instance_list[index],attrs) for index, attrs in enumerate(validated_data_list)
]
class CarModelSerializer(serializers.ModelSerializer):
class Meta:
list_serializer_class = CarListSerializer
model = models.Car
fields = ['name', 'price', 'icon', 'store_info', 'sponsor_list']
extra_kwargs = {
'store': {'write_only': True},
'sponsors': {'write_only': True}
}
class StoreModelSerializer(serializers.ModelSerializer):
cars = CarModelSerializer(many=True)
class Meta:
list_serialize_class = StoreListSerializer
model = models.CarStore
fields = ['name', 'address', 'cars']
extra_kwargs = {
}
urls.py
from django.conf.urls import url
from . import views
urlpatterns = [
url(r'^cars/\(', views.CarAPIView.as_view()),
url(r'^cars/(?P<pk>\d+)/\)', views.CarAPIView.as_view()),
url(r'^stores/$', views.CarStoreAPIView.as_view()),
url(r'^stores/(?P<pk>\d+)/$', views.CarStoreAPIView.as_view())
]
views.py
from rest_framework.views import APIView
from rest_framework.response import Response
from . import models
from .response import APIResponse
from . import serializer
class CarAPIView(APIView):
def get(self, request, *args, **kwargs):
pk = kwargs.get('pk')
if pk:
car_obj = models.Car.objects.filter(is_delete=False, pk=pk).first()
if not car_obj:
return APIResponse(status=1, msg='pk error')
car_ser = serializer.CarModelSerializer(car_obj)
else:
car_query = models.Car.objects.filter(is_delete=False).all()
car_ser = serializer.CarModelSerializer(car_query, many=True)
return APIResponse(results=car_ser.data)
def post(self, request, *args, **kwargs):
if isinstance(request.data, dict):
many = False
elif isinstance(request.data, list):
many = True
else:
return Response(data={'detail': '数据有误'}, status=400)
car_ser = serializer.CarModelSerializer(data=request.data, many=many)
car_ser.is_valid(raise_exception=True)
car_obj_or_list = car_ser.save()
return APIResponse(results=serializer.CarModelSerializer(car_obj_or_list, many=many).data)
def delete(self, request, *args, **kwargs):
pk = kwargs.get('pk')
if pk:
pks = [pk]
else:
pks = request.data
try:
rows = models.Car.objects.filter(is_delete=False, pk__in=pks).update(is_delete=True)
except:
return APIResponse(status=1, msg='数据有误')
if rows:
return APIResponse(status=0, msg='删除成功')
return APIResponse(status=1, msg='删除失败')
def patch(self, request, *args, **kwargs):
pk = kwargs.get('pk')
if pk:
try:
car_instance = models.Car.objects.filter(is_delete=False, pk=pk).first()
except:
return Response(data={'detail': 'pk error'}, status=400)
car_ser = serializer.CarModelSerializer(instance=car_instance, data=request.data, partial=True,
context={'request': request})
car_ser.is_valid(raise_exception=True)
car_obj = car_ser.save()
return APIResponse(results=serializer.CarModelSerializer(car_obj).data)
else:
request_data = request.data
try:
pks = []
for dic in request_data:
pk = dic.pop('pk')
pks.append(pk)
car_query = models.Car.objects.filter(is_delete=False, pk__in=pks).all()
if len(pks) != len(car_query):
raise Exception('pk对应的数据不存在')
except Exception as e:
return Response(data={'detail': '%s' % e}, status=400)
car_ser = serializer.CarModelSerializer(instance=car_query, data=request_data, many=True, partial=True)
car_ser.is_valid(raise_exception=True)
car_list = car_ser.save()
return APIResponse(results=serializer.CarModelSerializer(car_list, many=True).data)
class CarStoreAPIView(APIView):
def get(self, request, *args, **kwargs):
pk = kwargs.get('pk')
if pk:
store_obj = models.CarStore.objects.filter(is_delete=False, pk=pk).first()
store_ser = serializer.StoreModelSerializer(store_obj)
else:
store_query = models.CarStore.objects.filter(is_delete=False).all()
store_ser = serializer.StoreModelSerializer(store_query, many=True)
return APIResponse(results=store_ser.data)
def post(self, request, *args, **kwargs):
if isinstance(request.data, dict):
many = True
elif isinstance(request.data, list):
many = True
else:
return Response(data={'detail': '数据有误'}, status=400)
store_ser = serializer.StoreModelSerializer(data=request.data, many=many)
store_ser.is_valid(raise_exception=True)
store_obj_or_list = store_ser.save()
return APIResponse(results=serializer.StoreModelSerializer(store_obj_or_list, many=many).data)
