gibahjoe
serializers.deserialize fails for Nullable Types such as String?
When trying to deserialize an generated Object with the following code, I get an error, that Null cannot be cast to String.
serializers.fromJson<User?>(User.serializer, json)
The error:
Unhandled error Unhandled error Deserializing '[id, 10, firstName, a5, lastName, a5, email, [email protected], password, null, cr...' to 'User' failed due to: type 'Null' is not a subtype of type 'String' in type cast occurred in Instance of 'AuthenticationBloc'.
This seems to be related to this bug report in the package built_value: https://github.com/google/built_value.dart/issues/1035 The issue seems to be fixed according to the comments there, but the generated code for the deserialize part of my user object still looks like this:
case r'providerId':
result.providerId = serializers.deserialize(value,
specifiedType: const FullType(String)) as String;
even though it should be looking like this, as providerId is a nullable string:
case r'providerId':
result.providerId = serializers.deserialize(value,
specifiedType: const FullType(String)) as String?;
Changing the generated code fixes the issue.
I am using the following packages, and the Generator.dioNext.
openapi_generator: ^3.2.0+2
openapi_generator_annotations: ^3.2.0
This makes it even more confusing, as in the generated pubspec.lock I am seeing that the code is using the latest built_value version (which is 8.1.1
# pubspec.lock snippet from api/lib generated code.
built_value:
dependency: "direct main"
description:
name: built_value
url: "https://pub.dartlang.org"
source: hosted
version: "8.1.1"
Anything I am missing, or a genuine bug?
