一、简单分页
简单分页就是查看第n页，每条n数据
- 使用配置文件
在settings.py中配置
REST_FRAMEWORK = { # 每页显示两条 'PAGE_SIZE':2 }
- views.py
from rest_framework.pagination import PageNumberPagination class BooksView(APIView): def get(self,request): book_list = models.Book.objects.all() page_pagination = PageNumberPagination() page_list = page_pagination.paginate_queryset(book_list,request,view=self) ser = BookSerializer(instance=page_list,many=True) print(ser.data) return Response(ser.data)
- 自定义四个参数
from rest_framework.pagination import PageNumberPagination class BooksView(APIView): def get(self,request): #使用方法 #1.导入PageNumberPagination类 #2.实例化产生一个对象 #-page_pagination = PageNumberPagination() #3.需要配置四个参数: page_size, page_query_param, page_size_query_param, max_page_size #-page_size必须指定: 在setting中指定或者直接赋值 #4.调用下面的方法, 返回ret数据 #-ret = page_pagination.paginate_queryset(book_list, request, self) # 5.再序列化,就是序列化返回的数据,也就是ret book_list = models.Book.objects.all() page_pagination = PageNumberPagination() #四个参数 page_pagination.page_size = 4 #每页的条数 page_pagination.page_query_param = 'ccc' #控制查询第几页的查询参数, page_pagination.page_size_query_param = 'max' #用户控制每页显示的条数 page_pagination.max_page_size = 6 #每页显示的最大条数，防止用户自定义的条数太大 page_list = page_pagination.paginate_queryset(book_list,request,view=self) ser = BookSerializer(instance=page_list,many=True) print(ser.data) return Response(ser.data)
二、偏移分页
from rest_framework.pagination import PageNumberPagination,LimitOffsetPagination class BooksView(APIView): def get(self,request): #使用方法：同简单分页 book_list = models.Book.objects.all() page_pagination = LimitOffsetPagination() page_pagination.default_limit = 5 #默认显示的每页数量，默认偏移的数量 page_pagination.limit_query_param = 'xx' #往后偏移多少条,默认是limit,也可以自定义 page_pagination.offset_query_param = 'ee' #标杆值，默认是offser，也可以自定义 # limit_query_param + offset_query_param联合起来用: # -访问: http://127.0.0.1:8000/books/?limit=1&offset=5 表示: 以数据的第5条作为标杆, 往后偏移1条 page_list = page_pagination.paginate_queryset(book_list,request,view=self) ser = BookSerializer(instance=page_list,many=True) print(ser.data) return Response(ser.data)
三、CursorPagination（加密分页，只能看上一页和下一页，速度快）
from rest_framework.pagination import PageNumberPagination,LimitOffsetPagination,CursorPagination class BooksView(APIView): def get(self,request): #使用方法：同简单分页 #重点参数: #page_size: 每页显示的条数 #cursor_query_param: 不需要动 #ordering: 按什么排序 #通过get_paginated_response返回结果中带上一页和下一页的链接地址 #page_pagination.get_paginated_response(book_ser.data) #方法的用法 book_list = models.Book.objects.all() page_pagination = CursorPagination() page_pagination.ordering = 'id' page_list = page_pagination.paginate_queryset(book_list,request,view=self) ser = BookSerializer(instance=page_list,many=True) print(ser.data) return page_pagination.get_paginated_response(ser.data)