Need to explicitly allow_null for the assigned user.

lightweightdjango · Jul 12, 2015 · ab0f6e8 · ab0f6e8
1 parent ea38049
commit ab0f6e8
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/scrum/board/serializers.py b/scrum/board/serializers.py
@@ -41,7 +41,7 @@ def validate_end(self, value):
 class TaskSerializer(serializers.ModelSerializer):
 
     assigned = serializers.SlugRelatedField(
-        slug_field=User.USERNAME_FIELD, required=False,
+        slug_field=User.USERNAME_FIELD, required=False, allow_null=True,
         queryset=User.objects.all())
     status_display = serializers.SerializerMethodField()
     links = serializers.SerializerMethodField()