Trait FromParts

pub trait FromParts<Protocol>: Sized {
    type Rejection: IntoResponse<Protocol>;

    // Required method
    fn from_parts(parts: &mut Parts) -> Result<Self, Self::Rejection>;
}

Provides a protocol aware extraction from a Request. This borrows the Parts, in contrast to FromRequest which consumes the entire http::Request including the body.

Required Associated Types

type Rejection: IntoResponse<Protocol>

The type of the extraction failures.

Required Methods

fn from_parts(parts: &mut Parts) -> Result<Self, Self::Rejection>

Extracts self from a Parts synchronously.

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<P> FromParts<P> for ()

type Rejection = Infallible

fn from_parts(_parts: &mut Parts) -> Result<Self, Self::Rejection>

impl<P, A, B> FromParts<P> for (A, B)

where A: FromParts<P>, B: FromParts<P>,

type Rejection = Two<<A as FromParts<P>>::Rejection, <B as FromParts<P>>::Rejection>

fn from_parts(parts: &mut Parts) -> Result<Self, Self::Rejection>

impl<P, A, B, C> FromParts<P> for (A, B, C)

where A: FromParts<P>, B: FromParts<P>, C: FromParts<P>,

type Rejection = Three<<A as FromParts<P>>::Rejection, <B as FromParts<P>>::Rejection, <C as FromParts<P>>::Rejection>

fn from_parts(parts: &mut Parts) -> Result<Self, Self::Rejection>

impl<P, A, B, C, D> FromParts<P> for (A, B, C, D)

where A: FromParts<P>, B: FromParts<P>, C: FromParts<P>, D: FromParts<P>,

type Rejection = Four<<A as FromParts<P>>::Rejection, <B as FromParts<P>>::Rejection, <C as FromParts<P>>::Rejection, <D as FromParts<P>>::Rejection>

fn from_parts(parts: &mut Parts) -> Result<Self, Self::Rejection>

impl<P, A, B, C, D, E> FromParts<P> for (A, B, C, D, E)

where A: FromParts<P>, B: FromParts<P>, C: FromParts<P>, D: FromParts<P>, E: FromParts<P>,

type Rejection = Five<<A as FromParts<P>>::Rejection, <B as FromParts<P>>::Rejection, <C as FromParts<P>>::Rejection, <D as FromParts<P>>::Rejection, <E as FromParts<P>>::Rejection>

fn from_parts(parts: &mut Parts) -> Result<Self, Self::Rejection>

impl<P, A, B, C, D, E, F> FromParts<P> for (A, B, C, D, E, F)

where A: FromParts<P>, B: FromParts<P>, C: FromParts<P>, D: FromParts<P>, E: FromParts<P>, F: FromParts<P>,

type Rejection = Six<<A as FromParts<P>>::Rejection, <B as FromParts<P>>::Rejection, <C as FromParts<P>>::Rejection, <D as FromParts<P>>::Rejection, <E as FromParts<P>>::Rejection, <F as FromParts<P>>::Rejection>

fn from_parts(parts: &mut Parts) -> Result<Self, Self::Rejection>

impl<P, A, B, C, D, E, F, G> FromParts<P> for (A, B, C, D, E, F, G)

where A: FromParts<P>, B: FromParts<P>, C: FromParts<P>, D: FromParts<P>, E: FromParts<P>, F: FromParts<P>, G: FromParts<P>,

type Rejection = Seven<<A as FromParts<P>>::Rejection, <B as FromParts<P>>::Rejection, <C as FromParts<P>>::Rejection, <D as FromParts<P>>::Rejection, <E as FromParts<P>>::Rejection, <F as FromParts<P>>::Rejection, <G as FromParts<P>>::Rejection>

fn from_parts(parts: &mut Parts) -> Result<Self, Self::Rejection>

impl<P, A, B, C, D, E, F, G, H> FromParts<P> for (A, B, C, D, E, F, G, H)

where A: FromParts<P>, B: FromParts<P>, C: FromParts<P>, D: FromParts<P>, E: FromParts<P>, F: FromParts<P>, G: FromParts<P>, H: FromParts<P>,

type Rejection = Eight<<A as FromParts<P>>::Rejection, <B as FromParts<P>>::Rejection, <C as FromParts<P>>::Rejection, <D as FromParts<P>>::Rejection, <E as FromParts<P>>::Rejection, <F as FromParts<P>>::Rejection, <G as FromParts<P>>::Rejection, <H as FromParts<P>>::Rejection>

fn from_parts(parts: &mut Parts) -> Result<Self, Self::Rejection>

impl<P, T> FromParts<P> for Option<T>

where T: FromParts<P>,

type Rejection = Infallible

fn from_parts(parts: &mut Parts) -> Result<Self, Self::Rejection>

impl<P, T> FromParts<P> for Result<T, T::Rejection>

where T: FromParts<P>,

type Rejection = Infallible

fn from_parts(parts: &mut Parts) -> Result<Self, Self::Rejection>

impl<P, T> FromParts<P> for (T,)

where T: FromParts<P>,

type Rejection = <T as FromParts<P>>::Rejection

fn from_parts(parts: &mut Parts) -> Result<Self, Self::Rejection>

Implementors

impl<P> FromParts<P> for ApiGatewayProxyRequestContext

Available on crate feature aws-lambda only.

type Rejection = MissingGatewayContextV1

impl<P> FromParts<P> for ApiGatewayV2httpRequestContext

Available on crate feature aws-lambda only.

type Rejection = MissingGatewayContextV2

impl<P> FromParts<P> for Context

Available on crate feature aws-lambda only.

type Rejection = MissingContext

impl<P> FromParts<P> for ServerRequestId

Available on crate feature request-id only.

type Rejection = MissingServerRequestId

impl<P, T> FromParts<P> for ConnectInfo<T>

where T: Send + Sync + 'static,

type Rejection = MissingConnectInfo

impl<Protocol, T> FromParts<Protocol> for Extension<T>

where T: Send + Sync + 'static,

type Rejection = MissingExtension