restframework解析器与分页

解析器

导入

from rest_framework.parsers import JSONParser, FormParser, MultiPartParser, FileUploadParser

默认设置

'DEFAULT_PARSER_CLASSES': (
    'rest_framework.parsers.JSONParser',      # application/json
    'rest_framework.parsers.FormParser',      #    application/x-www-form-urlencoded
    'rest_framework.parsers.MultiPartParser'  # multipart/form-data
),

补充　　FileUploadParser     　　# */*

局部视图

from rest_framework.parsers import JSONParser,FormParser
class PublishViewSet(generics.ListCreateAPIView):
    parser_classes = [FormParser,JSONParser]
    queryset = Publish.objects.all()
    serializer_class = PublshSerializers
    def post(self, request, *args, **kwargs):
        print("request.data",request.data)
        return self.create(request, *args, **kwargs)

全局视图

REST_FRAMEWORK={
    "DEFAULT_PARSER_CLASSES":['rest_framework.parsers.FormParser',]
}

分页

导入

from rest_framework.pagination import PageNumberPagination,LimitOffsetPagination

简单分页

class MyPageNumberPagination(PageNumberPagination):
    """自定义分页的类"""
    page_size = 1                   # 每页多少条数据
    page_query_param = 'page'       # 已什么url名分页
    page_size_query_param = 'size'  # 临时更改每页多少页
    max_page_size = 3               # 每页最多可显示多少条数据

方式一:针对自己写的逻辑

class BookView(APIView):

    def get(self, request):
        book_list = Book.objects.all()
        # bs = BookSerializers(book_list, many=True)    # 自己写的serializer版本

        # 分页
        # pnp = MyPageNumberPagination()
        # 偏移页测试
        pnp = MyLimitOffsetPagination()
        books_page = pnp.paginate_queryset(book_list, request, self)

        bs = BookModelSerializer(books_page, many=True, context={'request': request})  # ModelSerializer组件的版本
        # print(bs.data, "type-->", type(bs))
        return Response(bs.data)

方式二:针对ModelViewSet

class AuthorViewSet(viewsets.ModelViewSet):

    # 分页
    pagination_class = MyPageNumberPagination

    throttle_classes = [VisitRateThrottle, ]
    queryset = Author.objects.all()
    serializer_class = AuthorModelSerializer

偏移分页

class MyLimitOffsetPagination(LimitOffsetPagination):
    """自定义的偏移页的类"""
    default_limit = 2                # 每页显示多少条数据
    limit_query_param = 'limit'        # 限制显示多少条数据
    offset_query_param = 'offset'    # 偏移

 方式一:针对自己写的逻辑

class BookView(APIView):

    def get(self, request):
        book_list = Book.objects.all()
        # bs = BookSerializers(book_list, many=True)    # 自己写的serializer版本

        # 分页
        # pnp = MyPageNumberPagination()
        # 偏移页测试
        pnp = MyLimitOffsetPagination()
        books_page = pnp.paginate_queryset(book_list, request, self)

        bs = BookModelSerializer(books_page, many=True, context={'request': request})  # ModelSerializer组件的版本
        # print(bs.data, "type-->", type(bs))
        return Response(bs.data)

方式二:针对ModelViewSet

class AuthorViewSet(viewsets.ModelViewSet):

    # 偏移分页
    pagination_class = MyLimitOffsetPagination

    throttle_classes = [VisitRateThrottle, ]
    queryset = Author.objects.all()
    serializer_class = AuthorModelSerializer