Struct poem::web::Data

pub struct Data<T>(pub T);

An extractor that can extract data from the request extension.

Errors

• GetDataError

Example

use poem::{
    get, handler, http::StatusCode, middleware::AddData, web::Data, Endpoint, EndpointExt,
    Request, Route,
};

#[handler]
async fn index(data: Data<&i32>) {
    assert_eq!(*data.0, 10);
}

let app = Route::new().at("/", get(index)).data(10i32);
let resp = app.get_response(Request::default()).await;
assert_eq!(resp.status(), StatusCode::OK);

Tuple Fields

0: T

Trait Implementations

impl<T> Deref for Data<T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'a, T: Send + Sync + 'static> FromRequest<'a> for Data<&'a T>

fn from_request<'life0, 'async_trait>(
    req: &'a Request,
    _body: &'life0 mut RequestBody
) -> Pin<Box<dyn Future<Output = Result<Self>> + Send + 'async_trait>> where
    'a: 'async_trait,
    'life0: 'async_trait,
    Self: 'async_trait, 

Extract from request head and body.

fn from_request_without_body<'async_trait>(
    req: &'a Request
) -> Pin<Box<dyn Future<Output = Result<Self>> + Send + 'async_trait>> where
    'a: 'async_trait,
    Self: Send + 'async_trait, 

Extract from request head.