Django Rest 'PageNumberPagination'对象没有属性 'page'错误

Question

我有一个基于函数的 Django API，如本示例所示:

@api_view(['GET'])
def findData(request):
    dataId = request.GET['dataId']
    page_query_param = 'page'
    page_size = request.GET['page_size']
    paginator = PageNumberPagination()
    paginator.page_size = page_size
    paginator.page_query_param = page_query_param
    qry_set = Data.objects.all()
    serializer = dataIdSerializer(qry_set, many=True)
    theData= serializer.data
    return Response(paginator.get_paginated_response(theData))

但我一直收到这个错误:

AttributeError: 'PageNumberPagination' object has no attribute 'page'

我试过设置

paginator.page_query_param = page_query_param

还是一样的问题。请告知如何修复。

Answer 1

问题是当调用 .paginate_queryset() 时，page 设置在 PageNumberPagination 上。

因此，您需要在您的paginator 上调用.paginate_queryset() 并传递queryset 和request.

当您实例化序列化器时，传递通过调用 .paginate_queryset() 而不是 qry_set 获得的结果

完成后，DRF 将抛出另一个异常，因为您将 paginator.get_paginated_response(theData) 放入 Response 中。要解决这个问题，只需返回 paginator.get_paginated_response(theData)。

最后您的代码将如下所示:

def findData(request):
    dataId = request.GET['dataId']
    page_query_param = 'page'
    page_size = request.GET['page_size']
    paginator = PageNumberPagination()
    paginator.page_size = page_size
    paginator.page_query_param = page_query_param
    qry_set = Data.objects.all()
    p = paginator.paginate_queryset(queryset=qry_set, request=request) # change 1
    serializer = dataIdSerializer(p, many=True) # change 2
    theData= serializer.data
    return paginator.get_paginated_response(theData) # change 3