英文:
Django Rest Framework get filtered queryset in custom get function
问题
我有一个名为MyAPIView的APIView，如下所示：
from rest_framework.views import APIView
class MyAPIView(APIView):
queryset = MyObject.objects.all()
filter_backends = [MyCustomFilterBackend, DjangoFilterBackend]
filterset_fields = ["field1", "field2"]
def get(self, request):
s = StatManager(self.queryset)
return Response(s.dashboard())
在这里，我使用MyCustomFilterBackend和DjangoFilterBackend来过滤很多内容。我的目标是将经过筛选的查询集提供给StatManager，以便它生成仪表板的统计信息。
目前，s = StatManager(self.queryset) 不考虑筛选条件。我该如何在我的get函数中提供经过筛选的查询集？
我阅读了DRF文档。我期望APIView有类似get_filtered_queryset()的函数。
我阅读了在GET函数内部使用Django REST Framework的过滤器和DJango filter_queryset，但它们没有提供令人满意的答案。
英文:
So I have an APIView like this:
from rest_framework.views import APIView
class MyAPIView(APIView):
queryset = MyObject.objects.all()
filter_backends = [MyCustomFilterBackend, DjangoFilterBackend]
filterset_fields = ["field1", "field2"]
def get(self, request):
s = StatManager(self.queryset)
return Response(s.dashboard())
where I filter bunch of stuff using MyCustomFilterBackend and DjangoFilterBackend. My goal is to give the filtered queryset to StatManager so it generates stats for the dashboard.
Currently, s = StatManager(self.queryset) does not take filters into account. How can I provide the filtered queryset in my get function?
I read the DRF documentation. I was expecting for APIView to have some function like get_filtered_queryset().
I read Filters of Django REST Framework inside GET function?
and DJango filter_queryset but they have no adequate answers.
答案1
得分: 1
尝试在get()方法内部的filter_queryset()方法中使用self.queryset，如下所示：
from rest_framework.views import APIView
class MyAPIView(APIView):
queryset = MyObject.objects.all()
filter_backends = [MyCustomFilterBackend, DjangoFilterBackend]
filterset_fields = ["field1", "field2"]
def filter_queryset(self, queryset):
for backend in list(self.filter_backends):
queryset = backend().filter_queryset(self.request, queryset, self)
return queryset
def get(self, request):
queryset = self.filter_queryset(self.queryset)
s = StatManager(queryset)
return Response(s.dashboard())
在这段代码中，将self.queryset 用于 filter_queryset() 方法内的查询操作。
英文:
Try to use self.queryset in filter_queryset() method inside get() method so:
from rest_framework.views import APIView
class MyAPIView(APIView):
queryset = MyObject.objects.all()
filter_backends = [MyCustomFilterBackend, DjangoFilterBackend]
filterset_fields = ["field1", "field2"]
def filter_queryset(self, queryset):
for backend in list(self.filter_backends):
queryset = backend().filter_queryset(self.request, queryset, self)
return queryset
def get(self, request):
queryset = self.filter_queryset(self.queryset)
s = StatManager(queryset)
return Response(s.dashboard())
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