视图家族练习
视图家族练习
作业：
1、整理今天所学知识点
2、查看并研究ListAPIView工具视图类，继承该类完成汽车资源的群查接口，汽车资源需要有image资源，查看接口image资源的值
3、研究GenericViewSet工具集，继承该类完成汽车资源的单查，群查，单增，单改，单删接口
1、搭建Vue前台，集合序列化和视图家族，完成前后台分离的图书管理系统，前台页面可以用element-ui搭建，也可以采用bootstrap+jquery搭建
modles.py
from django.db import models
class BaseModel(models.Model):
is_delete = models.BooleanField(default=False)
createdTime = models.DateTimeField(auto_now_add=True)
class Meta:
abstract = True
class Car(BaseModel):
name = models.CharField(max_length=64)
price = models.DecimalField(max_digits=10, decimal_places=2)
brand = models.ForeignKey(to='Brand', db_constraint=False, null=True, on_delete=models.SET_NULL,
related_name='cars')
sponsors = models.ManyToManyField(to='Sponsor', db_constraint=False, related_name='cars')
image = models.ImageField(upload_to= 'img',default='img/default.png')
@property
def img(self):
from django.conf import settings
return '%s%s%s' % (settings.BASE_URL, settings.MEDIA_URL, self.img)
@property
def brand_name(self):
return self.brand.name
@property
def sponsor_list(self):
sponsor_list_temp = []
for sponsor in self.sponsors.all():
sponsor_dic = {
'name': sponsor.name
}
try:
sponsor_dic['phone'] = sponsor.detail.phone
except:
sponsor_dic['phone'] = '未知'
sponsor_list_temp.append(sponsor_dic)
return sponsor_list_temp
class Meta:
verbose_name_plural = '汽车'
def __str__(self):
return self.name
class Brand(BaseModel):
name = models.CharField(max_length=64)
class Meta:
verbose_name_plural = '品牌'
def __str__(self):
return self.name
class Sponsor(BaseModel):
name = models.CharField(max_length=64)
@property
def phone(self):
try:
return self.detail.phone
except:
return "无"
class Meta:
verbose_name_plural = '赞助商'
def __str__(self):
return self.name
class SponsorDetail(BaseModel):
phone = models.CharField(max_length=11)
sponsor = models.OneToOneField(to=Sponsor, db_constraint=False, on_delete=models.CASCADE, related_name='detail')
class Meta:
verbose_name_plural = '赞助商详情'
def __str__(self):
try: # 连表可能会出现问题，所以要异常处理
return self.sponsor.name + '的详情'
except:
return super().__str__()
serializer.py
from . import models
from rest_framework import serializers
class CarModelSerializer(serializers.ModelSerializer):
class Meta:
model = models.Car
fields = ('name', 'price', 'brand_name', 'sponsor_list', 'brand', 'sponsors','image')
extra_kwargs = {
'brand': {
'required': True,
'write_only': True
},
'sponsors': {
'required': True,
'write_only': True
},
'image': {
'read_only': True,
'required': True,
},
}
urls.py:
from django.conf.urls import url,include
from django.contrib import admin
from django.views.static import serve
from .settings import MEDIA_ROOT
urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'^app01/', include('app01.urls')),
url(r'^media/(?P<path>.*)', serve, {'document_root': MEDIA_ROOT}),
]
from . import views
from django.conf.urls import url
urlpatterns = [
url(r'^v1/cars/$', views.CarAPIView.as_view()),
url(r'^v1/cars/(?P<pk>\d+)/$', views.CarAPIView.as_view()),
url(r'^cars/$', views.CarGenericViewSet.as_view({
'get': 'list',
'post': 'create',
})),
url(r'^cars/(?P<pk>\d+)/$', views.CarGenericViewSet.as_view({
'get': 'retrieve',
'put': 'update',
'patch': 'partial_update',
'delete': 'destroy',
})),
]
views.py
from django.shortcuts import render
from rest_framework.response import Response
from .response import APIResponse
from rest_framework.views import APIView
from . import models,serializer
from rest_framework.mixins import ListModelMixin
from rest_framework.generics import GenericAPIView
class CarAPIView(GenericAPIView,ListModelMixin):
queryset = models.Car.objects.filter(is_delete=False).all()
serializer_class = serializer.CarModelSerializer
lookup_field = 'pk'
def get(self,request, *args,**kwargs):
response = self.list(request, *args, **kwargs)
return APIResponse(results=response.data)
from rest_framework import mixins
from rest_framework.viewsets import GenericViewSet
class CarGenericViewSet(GenericViewSet,mixins.RetrieveModelMixin, mixins.ListModelMixin,mixins.CreateModelMixin,mixins.UpdateModelMixin,mixins.DestroyModelMixin):
queryset = models.Car.objects.filter(is_delete=False).all()
serializer_class = serializer.CarModelSerializer
def retrieve(self,request, *args, **kwargs):
response = self.retrieve(request, *args, **kwargs)
return APIResponse(results=response.data)
def post(self, request, *args, **kwargs):
response = self.create(request, *args, **kwargs)
return APIResponse(results=response.data)
def update(self,request, *args, **kwargs):
response = self.update(request, *args, **kwargs)
return APIResponse(results=response.data)
def list(self,request, *args, **kwargs):
response = self.list(request, *args, **kwargs)
return APIResponse(results=response.data)
def partial_update(self,request, *args, **kwargs):
response = self.partial_update(request, *args, **kwargs)
return APIResponse(results=response.data)
def destroy(self,request, *args, **kwargs):
car_obj = self.get_object()
car_obj.is_delete = True
car_obj.save()
return APIResponse(msg='删除成功')
