Struct AppendHeaders

pub struct AppendHeaders<I>(pub I);

Append headers to a response.

Returning something like [("content-type", "foo=bar")] from a handler will override any existing content-type headers. If instead you want to append headers, use AppendHeaders:

use axum::{
    response::{AppendHeaders, IntoResponse},
    http::header::SET_COOKIE,
};

async fn handler() -> impl IntoResponse {
    // something that sets the `set-cookie` header
    let set_some_cookies = /* ... */

    (
        set_some_cookies,
        // append two `set-cookie` headers to the response
        // without overriding the ones added by `set_some_cookies`
        AppendHeaders([
            (SET_COOKIE, "foo=bar"),
            (SET_COOKIE, "baz=qux"),
        ])
    )
}

Tuple Fields

0: I

Trait Implementations

impl<I: Clone> Clone for AppendHeaders<I>

fn clone(&self) -> AppendHeaders<I>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<I: Debug> Debug for AppendHeaders<I>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<I, K, V> IntoResponse for AppendHeaders<I>

where I: IntoIterator<Item = (K, V)>, K: TryInto<HeaderName>, K::Error: Display, V: TryInto<HeaderValue>, V::Error: Display,

fn into_response(self) -> Response

Create a response.

impl<I, K, V> IntoResponseParts for AppendHeaders<I>

where I: IntoIterator<Item = (K, V)>, K: TryInto<HeaderName>, K::Error: Display, V: TryInto<HeaderValue>, V::Error: Display,

type Error = TryIntoHeaderError<<K as TryInto<HeaderName>>::Error, <V as TryInto<HeaderValue>>::Error>

The type returned in the event of an error.

fn into_response_parts( self, res: ResponseParts, ) -> Result<ResponseParts, Self::Error>

Set parts of the response

impl<I: Copy> Copy for AppendHeaders<I>

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.