目录
1-2 自定义传统分页类 - 重写 PageNumberPagination内属性
一、简单分页 - 查看第n页,每页显示m条
注意:
- 必须配置每页显示条数:page.page_size
- page.page_query_param:配置get提交数据名
- 序列化需传入分页后数据对象
- return page.get_paginated_response(ser.data) - 返回数据带着上下链接和数据总条数
1-1 基本使用
# DRF 传统分页 from rest_framework.pagination import PageNumberPagination from rest_framework.views import APIView from rest_framework.response import Response from app01 import MySerializers # DRF 基本使用 - 默认配置 # http://127.0.0.1:8000/index/?page=2&size=3,size无效 class Index(APIView): def get(self, request, *arges, **kwargs): book_list = models.Book.objects.all() page = PageNumberPagination() # 每页显示条数 page.page_size = 2 # http://127.0.0.1:8000/index/?test=2 # page_query_param修改get提交数据名 page.page_query_param='test' # 参数:分页对象,request对象,当前视图对象 page_list = page.paginate_queryset(book_list, request, view=self) ser = MySerializers.BookSerializers(instance=page_list, many=True) return Response(ser.data) # return page.get_paginated_response(ser.data) # return render(request, 'drf_index.html', locals())
1-2 自定义传统分页类 - 重写 PageNumberPagination内属性
注意:
- 每页显示数据的优先级:前台提交(page_size_query_param = 'size' >page_size)
# DRF 自定义传统分页类,重写属性 class MyPageNumberPagination(PageNumberPagination): # 每页显示数据 page_size = 3 # http://127.0.0.1:8000/index/?data=2&size=2 # get数据提交名 page_query_param = 'data' # ?后size传输每页显示条数 page_size_query_param = 'size' # 每页最多显示4条,若page_size大于max_page_size则优先后者 max_page_size = 5 class Index(APIView): def get(self, request, *arges, **kwargs): book_list = models.Book.objects.all() page = MyPageNumberPagination() # 参数:分页对象,request对象,当前视图对象 page_list = page.paginate_queryset(book_list, request, view=self) ser = MySerializers.BookSerializers(instance=page_list, many=True) # return Response(ser.data) return page.get_paginated_response(ser.data)
二、偏移分页 - 在n位置,向后查看m条数据
注意:
# -----------DRF 偏移分页------------- from rest_framework.pagination import LimitOffsetPagination # DRF 自定义偏移分页类,重写属性 class MyLimitOffsetPagination(LimitOffsetPagination): default_limit = 3 max_limit = 5 # 返回数据从 (offset,limit} 左开右闭 # 数据最大值(id最大) limit_query_param = 'limit' # 数据最小值(id下线) offset_query_param = 'offset' class Index(APIView): def get(self, request, *arges, **kwargs): book_list = models.Book.objects.all() page = MyLimitOffsetPagination() # 参数:分页对象,request对象,当前视图对象 page_list = page.paginate_queryset(book_list, request, view=self) ser = MySerializers.BookSerializers(instance=page_list, many=True) # return Response(ser.data) return page.get_paginated_response(ser.data)
三、加密分页 - 加密分页,速度快,只能上下页
注意:
from rest_framework.pagination import CursorPagination # DRF 自定义偏移分页类,重写属性 class MyCursorPagination(CursorPagination): page_size = 1 page_size_query_param = 'size' max_page_size = 5 # 当前页的加密key # "next": "http://127.0.0.1:8000/index/?cursor=cD01&size=6", cursor_query_param = 'cursor' # 排序方式 ordering = 'id' class Index(APIView): def get(self, request, *arges, **kwargs): book_list = models.Book.objects.all() page = MyCursorPagination() # 参数:分页对象,request对象,当前视图对象 page_list = page.paginate_queryset(book_list, request, view=self) ser = MySerializers.BookSerializers(instance=page_list, many=True) # return Response(ser.data) return page.get_paginated_response(ser.data)
四、局部配置和全局配置
4-1 源码分析
4-2 全局配置
REST_FRAMEWORK = { # 每页显示两条 'PAGE_SIZE':2, }
4-3 局部配置