Trait OptionalFromJobCallParts

pub trait OptionalFromJobCallParts<Ctx>: Sized {
    type Rejection: IntoJobResult;

    // Required method
    fn from_job_call_parts(
        parts: &mut Parts,
        ctx: &Ctx,
    ) -> impl Future<Output = Result<Option<Self>, Self::Rejection>> + Send;
}

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

Required Associated Types

type Rejection: IntoJobResult

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

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

Required Methods

fn from_job_call_parts( parts: &mut Parts, ctx: &Ctx, ) -> 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

impl<Ctx, T> OptionalFromJobCallParts<Ctx> for Extension<T>

where T: Send + Sync + Clone + 'static, Ctx: Send + Sync + 'static,

type Rejection = Infallible