Django Rest Framework does not filter after resetting queryset

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My url will be something like.../? search=modal.

I want to replace the "modal" with empty "" so that clean the filter and return all records.

Views.py

class AnexoExamesViewSet(viewsets.ModelViewSet):

search_fields = ['descr']
filter_backends = (filters.SearchFilter,)
queryset = AnexoExames.objects.all()
serializer_class = AnexoExamesSerializer

def get_queryset(self):
    queryset = AnexoExames.objects.all()
    search_descr = self.request.query_params.get('search',None)
    print(search_descr)
    if search_descr=='modal':            
        queryset = AnexoExames.objects.filter(descr='')                
    return queryset

This way it is returning zero results

django django-rest-framework

1 answer

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def get_queryset(self):
    qs = self.queryset
    search_descr = self.request.query_params.get('search', None)

    if search_descr=='modal':            
        qs = qs.filter(descr='')                
    return qs

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