drf 多表

https://www.django-rest-framework.org/  官方站

https://www.django-rest-framework.org/tutorial/quickstart/#serializers    -- 序列化

一个 例子

from django.conf.urls import url
from django.contrib import admin
from app01 import views

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'books/(d+)/', views.BookHandle.as_view()),
    url(r'books/', views.BookHandle.as_view()),
]

class BookHandle(APIView):
    # 获取所有书籍
    def get(self, request,id=None):
        if id:
            books_obj_list = models.Book.objects.filter(id=id)
        else:
            books_obj_list = models.Book.objects.all()

        book_se = BookSerializer(books_obj_list, many=True)  # 要点
        return Response(book_se.data)

查询全部和带参数的查询 -- 

from django.shortcuts import render
from app01 import models
from rest_framework.views import APIView
from rest_framework import serializers
from rest_framework.response import Response   # 响应

class BookSerializer(serializers.ModelSerializer):
    class Meta:
        model = models.Book
        fields = '__all__'  # exclude = ('user',) 排除某些字段的方法    fields=['','']列表
　　　　
    
class BookHandle(APIView):
    # 获取所有书籍
    def get(self, request,id=None):
        if id:
            books_obj_list = models.Book.objects.filter(nid=id)
        else:
            books_obj_list = models.Book.objects.all()

        book_se = BookSerializer(books_obj_list, many=True)  # 要点
        return Response(book_se.data)

    def post(self, request):
        cs = BookSerializer(data=request.data,many=False)
        if cs.is_valid():
            cs.save()  # create 新建
            return Response(cs.data)
        else:
            return Response(cs.errors)

class SBookHandle(APIView):
    # 更新数据
    def put(self,request,id):
        old_obj = models.Book.objects.filter(pk=id).first()  # querySet
        cs = BookSerializer(data=request.data,many=False,instance=old_obj)
        if cs.is_valid():
            cs.save()   # 更新 update
            return Response(cs.data)
        else:
            return Response(cs.errors)

    def delete(self,request,id):
        models.Book.objects.filter(pk=id).delete()  # 删除
        return Response('')

    def get(self,request,id):
        books_obj_list = models.Book.objects.get(pk=id)  # model 类型
        book_se = BookSerializer(books_obj_list,many=False)
        return Response(book_se.data)

from django.conf.urls import url
from django.contrib import admin
from app01 import views

urlpatterns = [
    url(r'^admin/', admin.site.urls),

    url(r'books/$', views.BookHandle.as_view()),  # 不带参数的

    url(r'books/(d+)/', views.SBookHandle.as_view()), # 带参数的
]

 -- views.py --
# 进阶版
from rest_framework.mixins import CreateModelMixin,UpdateModelMixin,DestroyModelMixin,ListModelMixin,RetrieveModelMixin
from rest_framework import generics

class PublishHandle(ListModelMixin,CreateModelMixin,generics.GenericAPIView):
    queryset = models.Publish.objects.all()
    serializer_class = PublishSerializer
    def get(self, request):

        return self.list(request)

    def post(self, request):
        return self.create(request)

class SPublishHandle(UpdateModelMixin,DestroyModelMixin,RetrieveModelMixin, generics.GenericAPIView):
    queryset = models.Publish.objects.all()
    serializer_class = PublishSerializer
    def put(self, request,*args,**kwargs):
        return self.update(request,*args,**kwargs)  # update

    def delete(self, request,*args,**kwargs):
        return self.destroy(request,*args,**kwargs)  # destroy

    def get(self, request,*args,**kwargs):
        return self.retrieve(request,*args,**kwargs)  # retrieve

# 极简版
# class AuthorHandle(generics.ListCreateAPIView):  # 查询创建二合一
#     queryset = models.Author.objects.all()
#     serializer_class = AuthorSerializer
# #
# class SAuthorHandle(generics.RetrieveUpdateDestroyAPIView):  # 查单 更新 删除  三合一
#     queryset = models.Author.objects.all()
#     serializer_class = AuthorSerializer

#终极版
from rest_framework.viewsets import ModelViewSet
class SAuthorHandle(ModelViewSet):  # 全合一
    queryset = models.Author.objects.all()
    serializer_class = AuthorSerializer

-- all_serializer.py --
from app01 import models
from rest_framework import serializers
from rest_framework.response import Response   # 响应
from rest_framework.views import APIView

class BookSerializer(serializers.ModelSerializer):   # create     update
    class Meta:
        model = models.Book
        fields = '__all__'

class PublishSerializer(serializers.ModelSerializer):
    class Meta:
        model = models.Publish
        fields = '__all__'

class AuthorSerializer(serializers.ModelSerializer):
    class Meta:
        model = models.Author
        fields = '__all__'

-- urls.py --
from django.conf.urls import url
from django.contrib import admin
from app01 import views

urlpatterns = [
    url(r'^admin/', admin.site.urls),

    url(r'books/$', views.BookHandle.as_view()),  # 不带参数的
    url(r'books/(d+)/', views.SBookHandle.as_view()),  # 带参数的

    url(r'publishs/$', views.PublishHandle.as_view()),  # 不带参数的
    url(r'publishs/(?P<pk>d+)/', views.SPublishHandle.as_view()),  # 不带参数的

    url(r'authors/$', views.SAuthorHandle.as_view({'get':'list','post':'create'})),  # 不带参数的
    url(r'authors/(?P<pk>d+)/', views.SAuthorHandle.as_view({'get':'retrieve','put':'update','delete':'destroy'})),  # 不带参数的
]