Trait viz_core::Extract

pub trait Extract: Sized {
    type Error: Into<Response>;
    fn extract(cx: &mut Context) -> BoxFuture<'_, Result<Self, Self::Error>>;
}

A Extractor trait.

Associated Types

type Error: Into<Response>

The type of failures extracted by this Extractor.

Required methods

fn extract(cx: &mut Context) -> BoxFuture<'_, Result<Self, Self::Error>>

Extract the value from Context.

Implementations on Foreign Types

impl<T> Extract for Option<T> where
    T: Extract, 

type Error = T::Error

fn extract(cx: &mut Context) -> BoxFuture<'_, Result<Self, Self::Error>>

impl<T> Extract for Result<T, T::Error> where
    T: Extract, 

type Error = T::Error

fn extract(cx: &mut Context) -> BoxFuture<'_, Result<Self, Self::Error>>

impl Extract for Arc<Config>

type Error = Error

fn extract(cx: &mut Context) -> BoxFuture<'_, Result<Self, Self::Error>>

Implementors

impl Extract for Cookies

type Error = CookiesError

impl Extract for Multipart

type Error = PayloadError

impl<T> Extract for Form<T> where
    T: DeserializeOwned + Send + Sync, 

type Error = PayloadError

impl<T> Extract for Header<T> where
    T: Header, 

type Error = Error

impl<T> Extract for Json<T> where
    T: DeserializeOwned + Send + Sync, 

type Error = PayloadError

impl<T> Extract for Params<T> where
    T: DeserializeOwned, 

type Error = ParamsError

impl<T> Extract for Query<T> where
    T: DeserializeOwned, 

type Error = PayloadError

impl<T> Extract for State<T> where
    T: Clone + Send + Sync + 'static, 

type Error = Error