分页器

# 查询所有，才需要分页
from rest_framework.generics import ListAPIView# 内置三种分页方式
from rest_framework.pagination import PageNumberPagination,LimitOffsetPagination,CursorPagination
'''
PageNumberPagination
'''
class MyPageNumberPagination(PageNumberPagination):page_size = 3 # 每页条数page_query_param = 'aaa'  #查询第几页的keypage_size_query_param = 'size' # 每一项显示的条数，用来自定义条数的名称 ?aaa=2&size=6max_page_size = 5   # 每页最大显示条数，用来自定义条数# # 偏移计算的
# class MyLimitOffsetPagination(LimitOffsetPagination):
#     default_limit = 3 # 每页条数
#     limit_query_param = 'limit' # 往后拿几条
#     offset_query_param = 'offset' # 标杆 （偏移？）
#     max_limit = 5
#
# class MyCursorPagination(CursorPagination):
#     cursor_query_param = 'cursor'
#     page_size = 2
#     ordering = '-id' # 排序字段class BookView(ListAPIView):queryset = models.Book.objects.all().order_by('id')serializer_class = BookModelSerializer# 配置分页pagination_class = MyPageNumberPagination# 使用APIView分页
class BookView2(APIView):def get(self,request,*args,**kwargs):book_list=models.Book.objects.all()# 实例化分页器page_cursor=MyPageNumberPagination()book_list=page_cursor.paginate_queryset(book_list,request,view=self)next_url=page_cursor.get_next_link()pr_url=page_cursor.get_previous_link()book_ser=BookModelSerializer(book_list,many=True)return Response(data=book_ser.data)

根据ip进行频率限制

1.写一个类，继承SimpleRateThrottle，需要重写get_cache_key

get_cache_key返回什么就是限制什么，如ip

from rest_framework.throttling import SimpleRateThrottleclass MyThrottle(SimpleRateThrottle):scope = 'xxoo'def get_cache_key(self, request, view):print(request.META.get('REMOTE_ADDR'))return request.META.get('REMOTE_ADDR')

2. settings设置频率限制

REST_FRAMEWORK = {'DEFAULT_THROTTLE_RATES': {'xxoo': '3/m',}
}

局部设置

from utils.throttling import MyThrottle
class BookView2(APIView):throttle_classes = [MyThrottle,]

全局设置

REST_FRAMEWORK = {'DEFAULT_PERMISSION_CLASSES': ('utils.throttling.MyThrottle', ),'DEFAULT_THROTTLE_RATES': {'xxoo': '3/m',}
}