django-filter 的属性字段有变更，导致filter不起作用，有相同问题的可以参考

[linxi-1214]

自动生成的filter，采用的字段是filter_class 和 filter_fields
但是我的filter不起作用，我看了一下django_filter 发现其属性字段有变更：
https://django-filter.readthedocs.io/en/main/guide/migration.html

View attributes renamed (#867)

Several view-related attributes have been renamed to improve consistency with other parts of the library. The following classes are affected:

DRF ViewSet.filter_class => filterset_class
DRF ViewSet.filter_fields => filterset_fields
DjangoFilterBackend.default_filter_set => filterset_base
DjangoFilterBackend.get_filter_class() => get_filterset_class()
FilterMixin.filter_fields => filterset_fields