Django Rest framework三种分页方式详解

REST_FRAMEWORK = {
  # 对所有分页器生效，但优先级低
  'PAGE_SIZE': 5, # 每页显示5条数据
}

from django.db import models

class Test(models.Model):
  """用于测试分页的数据表"""
  name = models.CharField(max_length=64)

# 在Python脚本中调用Django环境
import os

if __name__ == '__main__':
  # 将下面的'blog095.settings'改为项目对应的名称后直接执行即可生成记录
  os.environ.setdefault('DJANGO_SETTINGS_MODULE', > 'blog095.settings')
  import django
  django.setup()
  from blog.models import Test # 导入数据表
  [Test.objects.create(name="花千骨%s" % str(i)) for i in range(100)]

from rest_framework.serializers import ModelSerializer
from blog.models import Test # 导入数据表

class TestSerializer(ModelSerializer):
  """用于测试分页的序列化类"""
  class Meta:
    model = Test
    fields = '__all__'

from rest_framework import pagination

class PageNumberPagination(pagination.PageNumberPagination):
  """查第n页，每页显示n条数据"""
  page_size = 10 # 指定每页显示多少条数据
  page_size_query_param = 'size' # URL参数中每页显示条数的参数
  page_query_param = 'page' # URL中页码的参数
  max_page_size = None # 每页最多显示多少条数据

from rest_framework.response import Response
from rest_framework.views import APIView
from rest_framework.serializers import ModelSerializer
from blog.models import Test # 导入数据表
from blog import pagination # 导入上面的分页配置

class Test01View(APIView):
  def get(self, request):
    queryset = Test.objects.all()

    # 1. 实例化分页器对象
    page_obj = pagination.PageNumberPagination()

    # 2. 使用自己配置的分页器调用分页方法进行分页
    page_data = page_obj.paginate_queryset(queryset, request)

    # 3. 序列化我们分页好的数据
    ser_obj = TestSerializer(page_data, many=True)

    # # 4. 返回数据
    # return Response(ser_obj.data)

    # 4. 返回带上一页/下一页连接的页面
    return page_obj.get_paginated_response(ser_obj.data)

from rest_framework import pagination

class LimitOffsetPagination(pagination.LimitOffsetPagination):
  """在第n个位置，向后查n条数据"""
  default_limit = 1 # 指定默认查多少条数据
  limit_query_param = 'limit' # URL中指定查多少条数据的参数
  offset_query_param = 'offset' # URL中指定从第几条数据开始查的参数
  max_limit = 999 # 最大显示多少条数据

from rest_framework.response import Response
from rest_framework.views import APIView
from rest_framework.serializers import ModelSerializer
from blog.models import Test # 导入数据表
from blog.pagination import LimitOffsetPagination # 导入上面的分页配置


class Test02View(APIView):
  def get(self, request):
    queryset = Test.objects.all()

    # 1. 实例化分页器对象
    page_obj = LimitOffsetPagination()

    # 2. 使用自己配置的分页器调用分页方法进行分页
    page_data = page_obj.paginate_queryset(queryset, request)

    # 3. 序列化我们分页好的数据
    ser_obj = TestSerializer(page_data, many=True)

    # # 4. 返回数据
    # return Response(ser_obj.data)

    # 4. 返回带上一页/下一页连接的页面
    return page_obj.get_paginated_response(ser_obj.data)

from rest_framework import pagination

class CursorPagination(pagination.CursorPagination):
  """加密游标的分页"""
  cursor_query_param = 'cursor' # 游标(这是加密的游标)
  # ordering = '-id' # 从后往前取数据
  ordering = 'id'
  page_size = 1 # 每页显示的条数

from rest_framework.response import Response
from rest_framework.views import APIView
from rest_framework.serializers import ModelSerializer
from blog.models import Test # 导入数据表
from blog.pagination import CursorPagination # 导入上面的分页配置

class Test03View(APIView):
  def get(self, request):
    queryset = Test.objects.all()

    # 1. 实例化分页器对象
    page_obj = CursorPagination()

    # 2. 使用自己配置的分页器调用分页方法进行分页
    page_data = page_obj.paginate_queryset(queryset, request)

    # 3. 序列化我们分页好的数据
    ser_obj = TestSerializer(page_data, many=True)

    # # 4. 返回数据
    # return Response(ser_obj.data)

    # 4. 返回带上一页/下一页连接的页面
    return page_obj.get_paginated_response(ser_obj.data)

from rest_framework.viewsets import ModelViewSet

class Test04View(ModelViewSet):
  queryset = Test.objects.all()
  serializer_class = TestSerializer
  pagination_class = CursorPagination # 指定分页配置器