Trait OptionalFromRequest

pub trait OptionalFromRequest:
    Sized
    + Send
    + Sync
    + 'static {
    type Rejection: IntoResponse;

    // Required method
    fn from_request(
        req: Request,
    ) -> impl Future<Output = Result<Option<Self>, Self::Rejection>> + Send;
}

Customize the behavior of Option<Self> as a FromRequest extractor.

Required Associated Types

type Rejection: IntoResponse

If the extractor fails, it will use this “rejection” type.

A rejection is a kind of error that can be converted into a response.

Required Methods

fn from_request( req: Request, ) -> impl Future<Output = Result<Option<Self>, Self::Rejection>> + Send

Perform the extraction.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors