title: django 2.2 + Strictness Behaviour + django-filter 2.x
body: <p>I have the django 1.11 code as below and we are using django-filter==1.0 library for filters.</p>
  <p>and below is the code according to django 1.11</p>
  <p><strong>Models:</strong></p>
  <pre><code>class BaseItem(models.Model):
  
      CHOICES = (
          (STATUS_ACTIVE, 'Active'),
          (STATUS_INACTIVE, 'Inactive'),
      )
  
  class Item(BaseItem):
      name = models.CharField(null=True)
      symbol = models.CharField(null=False)
  </code></pre>
  <p><strong>Filter</strong></p>
  <pre><code>class ItemFilterSet(django_filters.FilterSet):
      status = django_filters.MultipleChoiceFilter(choices=Item.CHOICES, widget=CSVWidget)
  
      class Meta:
          model = Item
          fields = ['symbol']
          strict = STRICTNESS.RAISE_VALIDATION_ERROR
  </code></pre>
  <p><strong>Viewset</strong></p>
  <pre><code>class ItemViewSet(ModelViewSet):
      http_method_names = ['get', 'post']
      serializer_class = ItemSerializer
      queryset = Item.objects.all()
  
      filterset_class = ItemFilterSet
  
  
      def filter_queryset(self, queryset):
          try:
              return super().filter_queryset(queryset)
          except ValidationError as e:
              if 'symbol' in e.error_dict:
                  raise exceptions.ValidationError(detail=e.message_dict)
              raise e
  </code></pre>
  <p>But in Django 2.2 version we have used django-filter==2.0 library, but in this library, this strictness has been moved to view as per below link.</p>
  <p><a href="https://django-filter.readthedocs.io/en/master/guide/migration.html#filterset-strictness-handling-moved-to-view-788" rel="nofollow noreferrer">https://django-filter.readthedocs.io/en/master/guide/migration.html#filterset-strictness-handling-moved-to-view-788</a></p>
  <p>django-filter other github link</p>
  <p><a href="https://github.com/stephenfin/django-filter/commit/552c35ac45b965c2d68e97f9cfdeef940f17d6ea" rel="nofollow noreferrer">https://github.com/stephenfin/django-filter/commit/552c35ac45b965c2d68e97f9cfdeef940f17d6ea</a></p>
  <p>So my question is,  according to django-filter 2.0 and django 2.2 , in the view, how to handle strictness behaviour in django 2.2 ?</p>