Question

Django Restframework为查询集中的列表和单个模型提供通用视图。哪个视图类最适合创建提供查询集统计摘要的端点？

我可以从头开始构建一个APIView，但我想重用ListAPIView上的大多数设置（例如get_queryset，permission_classes等）以及url参数。

端点的组织方式如下：

/api/data/           # data endpoint
/api/data/summary/   # summary endpoint

摘要端点将提供与单个模型实例无关的单个对象。

感谢您提供最佳实践建议。

Answer 1

现在我想出了以下解决方案：

# pseudo-code !    

class DataView(ListAPIView):
    """Returns a queryset as a serialized and paginated list.
    Set queryset, permissions, etc. here."""

    def get_queryset(self):
        # add complex lookup here
        queryset = self.queryset
        return queryset


class SummaryView(DataView):
    """Overwrite the get method to serve different 
    content, e.g. statistical summary."""

    def summarize(self, request, *args, **kwargs):
        """This can be moved to a Mixin class."""
        # make sure the filters of the parent class get applied
        queryset = self.filter_queryset(self.get_queryset())
        # do statistics here, e.g.
        stats = {'count': queryset.count()}
        # not using a serializer here since it is already a 
        # form of serialization
        return Response(stats)

    def get(self, request, *args, **kwargs):
        return self.summarize(request, *args, **kwargs)

Django Restframework：查询集的统计摘要使用什么视图？

1 个答案: