axum::response

Struct AppendHeaders

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pub struct AppendHeaders<I>(pub I);
Expand description

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§

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

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

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<I> Debug for AppendHeaders<I>
where I: Debug,

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

Formats the value using the given formatter. Read more
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impl<I, K, V> IntoResponse for AppendHeaders<I>
where I: IntoIterator<Item = (K, V)>, K: TryInto<HeaderName>, <K as TryInto<HeaderName>>::Error: Display, V: TryInto<HeaderValue>, <V as TryInto<HeaderValue>>::Error: Display,

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fn into_response(self) -> Response<Body>

Create a response.
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impl<I, K, V> IntoResponseParts for AppendHeaders<I>
where I: IntoIterator<Item = (K, V)>, K: TryInto<HeaderName>, <K as TryInto<HeaderName>>::Error: Display, V: TryInto<HeaderValue>, <V as TryInto<HeaderValue>>::Error: Display,

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

The type returned in the event of an error. Read more
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fn into_response_parts( self, res: ResponseParts, ) -> Result<ResponseParts, <AppendHeaders<I> as IntoResponseParts>::Error>

Set parts of the response
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impl<I> Copy for AppendHeaders<I>
where I: Copy,

Auto Trait Implementations§

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impl<I> Freeze for AppendHeaders<I>
where I: Freeze,

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impl<I> RefUnwindSafe for AppendHeaders<I>
where I: RefUnwindSafe,

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impl<I> Send for AppendHeaders<I>
where I: Send,

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impl<I> Sync for AppendHeaders<I>
where I: Sync,

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impl<I> Unpin for AppendHeaders<I>
where I: Unpin,

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impl<I> UnwindSafe for AppendHeaders<I>
where I: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromRef<T> for T
where T: Clone,

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fn from_ref(input: &T) -> T

Converts to this type from a reference to the input type.
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impl<H, T> HandlerWithoutStateExt<T> for H
where H: Handler<T, ()>,

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fn into_service(self) -> HandlerService<H, T, ()>

Convert the handler into a Service and no state.
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fn into_make_service(self) -> IntoMakeService<HandlerService<H, T, ()>>

Convert the handler into a MakeService and no state. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

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.