DRF视图组件

APIView与View区别：
重写as_view(): csrf_token豁免
重写dispatch():
封装原生request在Request类的对象里，
request.GET变成request.query_params
request.POST变成request.data(注意不是serializer.data)

request.META还是request.META（请求头数据dict）

views.py

from .models import Book
# from .serializers import BookSerializer
from .model_serializer import BookSerializer
from rest_framework.viewsets import ModelViewSet


class BookModelView(ModelViewSet):
    queryset = Book.objects.all()
    serializer_class = BookSerializer

urls.py

from django.urls import path
from . import views

app_name = 'serdemo'
urlpatterns = [
    path("book/list", views.BookModelView.as_view(actions={"get": "list", "post": "create"})),
    path("retrieve/<int:pk>",
         views.BookModelView.as_view(actions={"get": "retrieve", "put": "update", "delete": "destroy"}))
]