optional form parameters default to value "string" in the ui

[gabor-lbl]

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Example Code

@router.post(
    "/jobs/{machine:str}", 
    response_model=models.CommandOutput, 
)
def submit_job(
    job : str = Form(...),
    callbackEmail : Optional[str] = Form(None),

Description

Starting with fastapi 0.111.1, in the swagger ui the form element for "callbackEmail" contains the value "string". In 0.111.0 the form element is empty and the "Send empty value" checkbox is checked. Thanks for any info on this!

Operating System

macOS

Operating System Details

No response

FastAPI Version

0.111.1

Pydantic Version

2.8.2

Python Version

Python 3.10.2

Additional Context

No response

[YuriiMotov]

The behavior has been changed (because FastAPI now uses the latest version of Swagger-ui possible), but there is nothing wrong here.
You can remove the "string" value and "Send empty value" will be checked

[gabor-lbl]

Thank you for your response! Is it possible to do this declaratively from code? I would prefer users to not have to edit optional fields.

[YuriiMotov]

I don't now the way how to do this declaratively. I would ask this question in Swagger-UI repository

[gabor-lbl]

Ok thanks, I will try there.