rest-framework频率组件、url注册器、响应器、分页器

频率组件

 1 import time
 2 
 3 from rest_framework.throttling import BaseThrottle,SimpleRateThrottle
 4 
 5 
 6 IP_DICT = {}
 7 class Throttling(BaseThrottle):
 8 
 9     def __init__(self):
10         self.history = None
11 
12     def allow_request(self, request, view):
13         ctime = time.time()
14         remote_addr = request.META.get("REMOTE_ADDR")
15 
16         if remote_addr not in IP_DICT:
17             IP_DICT[remote_addr] = [ctime]
18             return True
19 
20         history = IP_DICT[remote_addr]
21         self.history = history
22 
23         while history and history[-1] < ctime - 60:
24             history.pop()
25 
26         if len(history) < 3:
27             history.insert(0, ctime)
28             return True
29 
30 
31     def wait(self):
32         ctime = time.time()
33         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
1 class SimpleThrottling(SimpleRateThrottle):
2 
3     rate = "5/m" #局部配置
4     # scope = "visit_rate"  #全局配置
5 
6     def get_cache_key(self, request, view):
7         return self.get_ident(request)

　　全局配置

1 REST_FRAMEWORK = {
2     'DEFAULT_THROTTLE_CLASSES': (
3         "app01.utils.app_throttle.SimpleThrottling",
4     ),
5     'DEFAULT_THROTTLE_RATES': {
6         "visit_rate": "5/m"
7     }
8 }

　　局部配置

1 throttle_classes = [SimpleThrottling]

url注册器

 1 from django.contrib import admin
 2 from django.urls import path,re_path,include
 3 
 4 from rest_framework import routers
 5 
 6 from app01 import views
 7 
 8 router = routers.DefaultRouter()
 9 router.register("books",views.BookView)
10 
11 urlpatterns = [
12     path('admin/', admin.site.urls),
13 
14 
15     # path('books/', views.BookView.as_view()),
16     # re_path('books/(?P<pk>\d+)/', views.BookFilterView.as_view()),
17 
18     # path('books/', views.BookView.as_view({
19     #     'get':'list',
20     #     "post":"create"
21     # })),
22     # re_path('books/(?P<pk>\d+)/', views.BookView.as_view({
23     #     "get":"retrieve",
24     #     "put":"update",
25     #     "delete":"destroy"
26     # })),
27     re_path("^",include(router.urls)),
28     path('user/',views.UserView.as_view())
29 ]

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

1 # 自定义一个分页器类
2 from rest_framework.pagination import PageNumberPagination
3 
4 
5 class MyPagonation(PageNumberPagination):
6     page_size = 3　　全局配置"PAGE_SIZE"
7     page_query_param = "page"
8     page_size_query_param = "size"
9     max_page_size = 5

　　局部配置

pagination_class = MyPagonation

　　

posted @ 2018-12-11 15:43  被嫌弃的胖子  阅读(149)  评论(0)  编辑  收藏  举报