To test the branch, simply run the following:

git clone http://github.com/openapitools/openapi-generator -b python-fastapi-pydantic
cd openapi-generator
mvn clean package -DskipTests -Dmaven.javadoc.skip=true
java -jar modules/openapi-generator-cli/target/openapi-generator-cli.jar generate -g python-fastapi -i modules/openapi-generator/src/test/resources/3_0/petstore.yaml -o /tmp/python-fastapi/

We'll consider this PR as a bug fix (non breaking change) to the upcoming 7.x release.

We'll consider this PR as a bug fix (non breaking change) to the upcoming 7.x release.

Is there a timeline of when this is planned to be released?

@wing328 I have tried and tested if python-nextgen plays well with fastAPI and if it really fixes some of the issues that were never fixed for python-fastapi like the support for enum and oneOf schemas.

I can gladly say that it does fix the enum problem. However, for the oneOf schemas I had to implement a decorator so that the generated pydantic models would be compatible with how fastAPI serializes the request payload into pydantic models. I hope that this PR considers that. As from what I have seen is the template model_oneof.mustache is the same as the from python-nextgen which didn't work out of the box for fastAPI.

I haven't had the time to test this branch yet but I hope that things like that is under your scope during implmentation.

@yahiaosama thanks for reviewing the testing this change.

Can you please PM me via Slack for a few quick questions if you've time?

https://join.slack.com/t/openapi-generator/shared_invite/zt-12jxxd7p2-XUeQM~4pzsU9x~eGLQqX2g

These changes generate incorrect code for my usecase.

TextTopic:
  description: foobar
  enum:
  - foo
  - bar
  title: TextTopic
  type: string

Turns into:

class TextTopic(int, Enum):
    """
    foobar
    """

    """
    allowed enum values
    """
    NUMBER_'foo' = 'foo'
    NUMBER_'bar' = 'bar'

    @classmethod
    def from_json(cls, json_str: str) -> TextTopic:
        """Create an instance of TextTopic from a JSON string"""
        return TextTopic(json.loads(json_str))

The same code generates correctly using #14242.

I've filed #17369 instead to support pydantic v2 in the python-fastapi generator.

please review and test that one instead.

closing this one.