diff --git a/rest_framework/serializers.py b/rest_framework/serializers.py
index c7d4405c59..037939e318 100644
--- a/rest_framework/serializers.py
+++ b/rest_framework/serializers.py
@@ -113,8 +113,13 @@ def many_init(cls, *args, **kwargs):
kwargs['child'] = cls()
return CustomListSerializer(*args, **kwargs)
"""
+ allow_empty = kwargs.pop('allow_empty', None)
child_serializer = cls(*args, **kwargs)
- list_kwargs = {'child': child_serializer}
+ list_kwargs = {
+ 'child': child_serializer,
+ }
+ if allow_empty is not None:
+ list_kwargs['allow_empty'] = allow_empty
list_kwargs.update(dict([
(key, value) for key, value in kwargs.items()
if key in LIST_SERIALIZER_KWARGS
diff --git a/tests/test_serializer_nested.py b/tests/test_serializer_nested.py
index 22d4deca15..aeb092ee05 100644
--- a/tests/test_serializer_nested.py
+++ b/tests/test_serializer_nested.py
@@ -79,17 +79,23 @@ class NestedSerializer(serializers.Serializer):
class TestSerializer(serializers.Serializer):
allow_null = NestedSerializer(many=True, allow_null=True)
not_allow_null = NestedSerializer(many=True)
+ allow_empty = NestedSerializer(many=True, allow_empty=True)
+ not_allow_empty = NestedSerializer(many=True, allow_empty=False)
self.Serializer = TestSerializer
def test_null_allowed_if_allow_null_is_set(self):
input_data = {
'allow_null': None,
- 'not_allow_null': [{'example': '2'}, {'example': '3'}]
+ 'not_allow_null': [{'example': '2'}, {'example': '3'}],
+ 'allow_empty': [{'example': '2'}],
+ 'not_allow_empty': [{'example': '2'}],
}
expected_data = {
'allow_null': None,
- 'not_allow_null': [{'example': 2}, {'example': 3}]
+ 'not_allow_null': [{'example': 2}, {'example': 3}],
+ 'allow_empty': [{'example': 2}],
+ 'not_allow_empty': [{'example': 2}],
}
serializer = self.Serializer(data=input_data)
@@ -99,7 +105,9 @@ def test_null_allowed_if_allow_null_is_set(self):
def test_null_is_not_allowed_if_allow_null_is_not_set(self):
input_data = {
'allow_null': None,
- 'not_allow_null': None
+ 'not_allow_null': None,
+ 'allow_empty': [{'example': '2'}],
+ 'not_allow_empty': [{'example': '2'}],
}
serializer = self.Serializer(data=input_data)
@@ -118,10 +126,44 @@ def validate_allow_null(self, value):
input_data = {
'allow_null': None,
- 'not_allow_null': [{'example': 2}]
+ 'not_allow_null': [{'example': 2}],
+ 'allow_empty': [{'example': 2}],
+ 'not_allow_empty': [{'example': 2}],
}
serializer = TestSerializer(data=input_data)
assert serializer.is_valid()
assert serializer.validated_data == input_data
assert TestSerializer.validation_was_run
+
+ def test_empty_allowed_if_allow_empty_is_set(self):
+ input_data = {
+ 'allow_null': [{'example': '2'}],
+ 'not_allow_null': [{'example': '2'}],
+ 'allow_empty': [],
+ 'not_allow_empty': [{'example': '2'}],
+ }
+ expected_data = {
+ 'allow_null': [{'example': 2}],
+ 'not_allow_null': [{'example': 2}],
+ 'allow_empty': [],
+ 'not_allow_empty': [{'example': 2}],
+ }
+ serializer = self.Serializer(data=input_data)
+
+ assert serializer.is_valid(), serializer.errors
+ assert serializer.validated_data == expected_data
+
+ def test_empty_not_allowed_if_allow_empty_is_set_to_false(self):
+ input_data = {
+ 'allow_null': [{'example': '2'}],
+ 'not_allow_null': [{'example': '2'}],
+ 'allow_empty': [],
+ 'not_allow_empty': [],
+ }
+ serializer = self.Serializer(data=input_data)
+
+ assert not serializer.is_valid()
+
+ expected_errors = {'not_allow_empty': {'non_field_errors': [serializers.ListSerializer.default_error_messages['empty']]}}
+ assert serializer.errors == expected_errors
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