原生Django也给我们提供了分页paginator
在DRF中为我们展示了三种分页的做法
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from rest_framework.pagination import PageNumberPagination, LimitOffsetPagination, CursorPagination
1、PageNumberPagination
例如：http://127.0.0.1:8000/api/article/?page=2&size=1
这种最为常见，看第N页，每页显示M条数据
首先也是定义分页类
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from rest_framework.pagination import PageNumberPagination
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class MyPageNumber(PageNumberPagination):
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page_size = 8 # 每页显示多少条
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page_size_query_param = 'size' # URL中每页显示条数的参数
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page_query_param = 'page' # URL中页码的参数
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max_page_size = 8 # 最大页码数限制
视图1、对于APIView进行的封装
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class ArticleList(APIView):
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def get(self, request, *args, **kwargs):
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res = {"code": 1000}
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article_list = models.Article.objects.all().order_by("id")
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# 分页
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page_obj = MyPageNumber()
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page_article = page_obj.paginate_queryset(queryset=article_list, request=request, view=self)
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ser_obj = ArticleSerializer(page_article, many=True) # 注意这里的传参已经变了
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res["data"] = ser_obj.data
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return Response(res)
视图2、对于ViewSet进行封装的视图
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class PublishesViewSet(viewsets.ModelViewSet):
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queryset = Publish.objects.all()
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serializer_class = PublishModelSerializer
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pagination_class = MyPageNumber # 就是加上这句代码
也可一加在全局
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page_size = 8 # 每页显示多少条
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page_size_query_param = 'size' # URL中每页显示条数的参数
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page_query_param = 'page' # URL中页码的参数
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max_page_size = 8 # 最大页码数限制
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# 照着上面的写
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REST_FRAMEWORK = {
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'PAGE_SIZE': 2
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}
2、LimitOffsetPagination
例如：http://127.0.0.1:8000/api/article/?offset=2&limit=2
这种见的不多
在第N个位置往后偏移查看第M条数据
分页类
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# offset分页
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class MyLimitOffset(LimitOffsetPagination):
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default_limit = 8
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limit_query_param = 'limit'
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offset_query_param = 'offset'
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max_limit = 8
视图1、APIview
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class ArticleList(APIView):
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def get(self, request, *args, **kwargs):
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res = {"code": 0}
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article_list = models.Article.objects.all().order_by("id")
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# 分页
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page_obj = MyLimitOffset()
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page_article = page_obj.paginate_queryset(queryset=article_list, request=request, view=self)
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ser_obj = ArticleSerializer(page_article, many=True)
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res["data"] = ser_obj.data
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return page_obj.get_paginated_response(res)
视图2、Viewset
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class PublishesViewSet(viewsets.ModelViewSet):
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queryset = Publish.objects.all()
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serializer_class = PublishModelSerializer
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pagination_class = MyLimitOffset # 就是加上这句代码
代码一样
全局配置的参数当然也要改一下
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default_limit = 8
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limit_query_param = 'limit'
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offset_query_param = 'offset'
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max_limit = 8
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# 照着上面的写
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REST_FRAMEWORK = {
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'default_limit': 8
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...
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}
分页也就到此结束了！
可以同Django原生的分页做个对比