rest_framework-分页

分页

from django.shortcuts import render

# Create your views here.

from rest_framework import serializers

from rest_framework.views import APIView

from .models import *

from rest_framework.response import Response

from rest_framework.pagination import PageNumberPagination

class MySerializer(serializers.ModelSerializer):

    class Meta:

        model = Roles

        fields = '__all__'

class MyPagination(PageNumberPagination):

    page_size = 1

    page_query_param = 'page'

    page_size_query_param = 'page_size'

    max_page_size = 50

class MyView(APIView):

    def get(self, request, *args, **kwargs):

        queryset = Roles.objects.all()

        pagers = MyPagination()

        instance = pagers.paginate_queryset(queryset, request, self)

        serializer = MySerializer(instance=instance, many=True)

        return Response(serializer.data)

PageNumberPagination：需要在rest-framework的setting配置：'PAGE_SIZE'
使用
- 先实例化一个分页对象
- 调用实例化对象的paginate_queryset方法，这个方法接受3个参数，查询的queryset对象，request，view
- 序列化
- 返回
自定义分页对象
- 需继承PageNumberPagination
- 设置默认的page_size
- page_query_param: 设置该参数，可以从url的参数里面获取请求页数
- page_size_query_param：设置该参数，可以从url的参数里面获取请求页数大小
- max_page_size：设置该参数，限制一页请求的大小，防止恶意请求

巴特西

rest_framework-分页

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