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-rw-r--r--rest_framework/serializers.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/rest_framework/serializers.py b/rest_framework/serializers.py
index ff5eb873..d0313513 100644
--- a/rest_framework/serializers.py
+++ b/rest_framework/serializers.py
@@ -739,6 +739,10 @@ class ModelSerializer(Serializer):
if issubclass(model_field.__class__, models.TextField):
kwargs['widget'] = widgets.Textarea
+ if issubclass(model_field.__class__, models.PositiveIntegerField) or\
+ issubclass(model_field.__class__, models.PositiveSmallIntegerField):
+ kwargs['min_value'] = 0
+
# TODO: TypedChoiceField?
if model_field.flatchoices: # This ModelField contains choices
kwargs['choices'] = model_field.flatchoices