ModelViewSet里的过滤、排序、分页、序列化设置

先安装一下配置：

  安装DjangoRestFrameworkk
  pip install djangorestframeword==3.11.1(别的版本应该也可以，但是我目前不太清楚)
  pip install django_filter==2.3.0（同上）
  pip install markdown

然后在settings里面配置添加：

  REST_FRAMEWORK = {
       'DEFAULT_THROTTLE_CLASSES': (
           'rest_framework.throttling.AnonRateThrottle',
           'rest_framework.throttling.UserRateThrottle',
       ),
       'DEFAULT_THROTTLE_RATES': {
           'anon': '100/day',
           'user': '1000/day'
       },
       'DEFAULT_FILTER_BACKENDS': ('django_filter.rest_framework.DjangoFilterBackend',)
  }

跟路由还跟以前一样。
子路由：

  from django.urls import path, include
  from apps.app01 import views
  from rest_framework.routers import DefaultRouter

  router = DefaultRouter()
  router.register("users", views.UserModelViewSet)（users是路径，UserModelViewSet是接口的名字）

  urlpatterns = [
        path('', include(router.urls)),
  ]

views：

  from .models import *
  from .serializers import *
  from django_filters.rest_framework import DjangoFilterBackend
  from rest_framework.filters import OrderingFilter
  from rest_framework.pagination import PageNumberPagination
  from rest_framework.viewsets import ModelViewSet

  class UserModelViewSet(ModelViewSet):
      queryset = User.objects.all()
      serializer_class = UserSer
      pagination_class = StandardPageNumberPagination
      filter_backends = (OrderingFilter, DjangoFilterBackend)
      filter_filter = ['username', 'password']
      ordering_fields = ('password')