django rest framework实现分页功能

在web开发中很多需求都需要实现分页功能，然而 Django Rest Framework 自带的分页功能，只能在 mixins.ListModelMixin and generics.GenericAPIView classes 继承这两个类才可以使用，而我们通常为了灵活性，往往会继承APIView 来实现，那么我们就需要自已使用分页功能。

一.serializers.py文件中定义序列化类

from rest_framework.serializers import Serializer

from models import MyModel

class MySerializer( Serializer.ModelSerializers):
    
    class Meta:
        model = MyModel
        fields = ("user_name", "age")

二.views.py视图函数中

from rest_framework.views import APIView 
from rest_framework from rest_framework.response import Response
from rest_framework.decorators import api_view
from django.core.paginator import Paginator

from serializers import MySerializer
from models import MyModel

@api_view(["GET"])
def get_list(request):
    try:
        page_size = int(request.GET.get('page_size', 2))
        page = int(request.GET.get('page', 1))
    except (TypeError, ValueError):
        return Response(status=status.HTTP_400_BAD_REQUEST)
　　try:
　　　　objs = MyModel.objects.all()
　　except:
　　　　return Response(status=status.HTTP_417_EXPECTATION_FAILED)    
　　paginator = Paginator(objs, page_size) # paginator对象
   total = paginator.num_pages #总页数
   try:
       objs = paginator.page(page)
   except PageNotAnInteger:
       objs = paginator.page(1)
   except EmptyPage:
       objs = paginator.page(paginator.num_pages)

   serializer = MySerializer(objs, many=True) #序列化操作

   return Response(data={
       'detail': serializer.data,
        page': page,
       'total': total
   }, status=status.HTTP_200_OK) #返回