Trait FromRequest

pub trait FromRequest<B, M = ViaRequest>: Sized {
    type Rejection: IntoResponse;

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

Required Associated Types

type Rejection: IntoResponse

If the extractor fails it’ll 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<B>, ) -> impl Future<Output = Result<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.

Implementations on Foreign Types

impl<B, T> FromRequest<B> for Result<T, <T as FromRequest<B>>::Rejection>

where B: Send, T: FromRequest<B>,

type Rejection = Infallible

async fn from_request( req: Request<B>, ) -> Result<Result<T, <T as FromRequest<B>>::Rejection>, <Result<T, <T as FromRequest<B>>::Rejection> as FromRequest<B>>::Rejection>

Implementors

impl<B> FromRequest<B> for Request<B>

where B: Send,

type Rejection = Infallible

impl<B, T> FromRequest<B, ViaParts> for T

where B: Send, T: FromRequestParts,

type Rejection = <T as FromRequestParts>::Rejection