ntex::web

Trait State

pub trait State: 'static {
    type Error;
}

Expand description

Application state used by web services.

A web::App is parameterized by a type that implements this trait. The state is available to handlers registered with Route::to_with_state(), and to filters, middleware, and services through their service context.

The associated Error type selects the application’s error domain, which is used by WebError and WebResponseError. Most applications use DefaultError.

The trait does not require Clone, but serving an application does: the server and HttpService clone the state for each connection.

use ntex::web;

#[derive(Clone)]
struct ApplicationState {
    greeting: String,
}

impl web::State for ApplicationState {
    type Error = web::DefaultError;
}