Response validation fails due to missing optional elements

[DerManoMann]

Hi,

I do have a data type using Optional like in the example below. What is wrong here?

class PackageData(BaseModel):
    """Single package data."""

    id: UUID = Field(..., description="UUID")
    title: str = Field(..., description="Title")
    visibility: Optional[str] = Field(..., description="Visibility of the package")

Tests are failing with this, though:

E   visibility
E     field required (type=value_error.missing)

[luolingchun]

... means required. You can use None or other strings.

[DerManoMann]

I was under the impression the Optional[str] for visibility would flag it as optional property...

So, is there no way to have optional properties in the schema? I am sure I've seen that using other languages...

[luolingchun]

I guess you need official documents: https://pydantic-docs.helpmanual.io/usage/models/#required-optional-fields