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')