old_contents: import django_filters
  from rest_framework import filters
  
  from bulbs.super_features.utils import get_superfeature_model
  
  SUPERFEATURE_MODEL = get_superfeature_model()
  
  
  def filter_status(queryset, value):
      if not value:
          return queryset
      else:
          return [sf for sf in queryset
                  if sf.status.lower() == value.lower()]
  
  
  class SuperFeatureFilter(filters.FilterSet):
      status = django_filters.CharFilter(action=filter_status)
  
      class Meta:
          model = SUPERFEATURE_MODEL
          fields = ['status']
  
new_contents: import django_filters
  from rest_framework import filters
  
  from bulbs.super_features.utils import get_superfeature_model
  
  SUPERFEATURE_MODEL = get_superfeature_model()
  
  
  def filter_status(queryset, value):
      if not value:
          return queryset
      else:
          # NOTE: this list comprehension is happening because
          # status is a property, not a model field
          # see: http://stackoverflow.com/a/1205416
          return [sf for sf in queryset
                  if sf.status.lower() == value.lower()]
  
  
  class SuperFeatureFilter(filters.FilterSet):
      status = django_filters.CharFilter(action=filter_status)
  
      class Meta:
          model = SUPERFEATURE_MODEL
          fields = ['status']
  
subject: add note