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