Allow empty values for CSV range filter

carltongibson · Jul 13, 2018 · e540f28 · e540f28
1 parent b290d2c
commit e540f28
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/django_filters/fields.py b/django_filters/fields.py
@@ -191,7 +191,9 @@ class BaseRangeField(BaseCSVField):
  def clean(self, value):
  value = super().clean(value)
 
- if value is not None and len(value) != 2:
+ assert value is None or isinstance(value, list)
+
+ if value and len(value) != 2:
  raise forms.ValidationError(
  self.error_messages['invalid_values'],
  code='invalid_values')