rest-framework频率组件、url注册器、响应器、分页器

频率组件

 import time

 from rest_framework.throttling import BaseThrottle,SimpleRateThrottle

 IP_DICT = {}
 class Throttling(BaseThrottle):

     def __init__(self):
         self.history = None

     def allow_request(self, request, view):
         ctime = time.time()
         remote_addr = request.META.get("REMOTE_ADDR")

         if remote_addr not in IP_DICT:
             IP_DICT[remote_addr] = [ctime]
             return True

         history = IP_DICT[remote_addr]
         self.history = history

         while history and history[-1] < ctime - 60:
             history.pop()

         if len(history) < 3:
             history.insert(0, ctime)
             return True

     def wait(self):
         ctime = time.time()
         return 60 - (ctime - self.history[-1])

在使用的视图类中加入：

throttle_classes = [Throttling]

继承一个简单的频率类

 class SimpleThrottling(SimpleRateThrottle):

     rate = "5/m" #局部配置
     # scope = "visit_rate"  #全局配置

     def get_cache_key(self, request, view):
         return self.get_ident(request)

　　全局配置

 REST_FRAMEWORK = {
     'DEFAULT_THROTTLE_CLASSES': (
         "app01.utils.app_throttle.SimpleThrottling",
     ),
     'DEFAULT_THROTTLE_RATES': {
         "visit_rate": "5/m"
     }
 }

　　局部配置

 throttle_classes = [SimpleThrottling]

url注册器

 from django.contrib import admin
 from django.urls import path,re_path,include

 from rest_framework import routers

 from app01 import views

 router = routers.DefaultRouter()
 router.register("books",views.BookView)

 urlpatterns = [
     path('admin/', admin.site.urls),

     # path('books/', views.BookView.as_view()),
     # re_path('books/(?P<pk>\d+)/', views.BookFilterView.as_view()),

     # path('books/', views.BookView.as_view({
     #     'get':'list',
     #     "post":"create"
     # })),
     # re_path('books/(?P<pk>\d+)/', views.BookView.as_view({
     #     "get":"retrieve",
     #     "put":"update",
     #     "delete":"destroy"
     # })),
     re_path("^",include(router.urls)),
     path('user/',views.UserView.as_view())
 ]

响应器

from rest_framework.renderers import JSONRenderer,BrowsableAPIRenderer

renderer_classes = [JSONRenderer] #之支持json格式的渲染，而不支持浏览器的渲染

分页器

 # 自定义一个分页器类
 from rest_framework.pagination import PageNumberPagination

 class MyPagonation(PageNumberPagination):
     page_size = 3　　全局配置"PAGE_SIZE"
     page_query_param = "page"
     page_size_query_param = "size"
     max_page_size = 5

　　局部配置

pagination_class = MyPagonation