Struct axum::Form

pub struct Form<T>(pub T);

Available on crate feature form only.

URL encoded extractor and response.

As extractor

If used as an extractor Form will deserialize application/x-www-form-urlencoded request bodies into some target type via serde::Deserialize.

Since parsing form data requires consuming the request body, the Form extractor must be last if there are multiple extractors in a handler. See “the order of extractors”

use axum::Form;
use serde::Deserialize;

#[derive(Deserialize)]
struct SignUp {
    username: String,
    password: String,
}

async fn accept_form(Form(sign_up): Form<SignUp>) {
    // ...
}

Note that Content-Type: multipart/form-data requests are not supported. Use Multipart instead.

As response

use axum::Form;
use serde::Serialize;

#[derive(Serialize)]
struct Payload {
    value: String,
}

async fn handler() -> Form<Payload> {
    Form(Payload { value: "foo".to_owned() })
}

Tuple Fields

0: T

Trait Implementations

impl<T: Clone> Clone for Form<T>

fn clone(&self) -> Form<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Form<T>

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

Formats the value using the given formatter.

impl<T: Default> Default for Form<T>

fn default() -> Form<T>

Returns the “default value” for a type.

impl<T> Deref for Form<T>

type Target = T

The resulting type after dereferencing.

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

Dereferences the value.

impl<T, S, B> FromRequest<S, B, ViaRequest> for Form<T>where
    T: DeserializeOwned,
    B: HttpBody + Send + 'static,
    B::Data: Send,
    B::Error: Into<BoxError>,
    S: Send + Sync,

type Rejection = FormRejection

If the extractor fails it’ll use this “rejection” type. A rejection is a kind of error that can be converted into a response.

fn from_request<'life0, 'async_trait>(
    req: Request<B>,
    state: &'life0 S
) -> Pin<Box<dyn Future<Output = Result<Self, Self::Rejection>> + Send + 'async_trait>>where
    'life0: 'async_trait,
    Self: 'async_trait,

Perform the extraction.

impl<T> IntoResponse for Form<T>where
    T: Serialize,

fn into_response(self) -> Response

Create a response.

impl<T: Copy> Copy for Form<T>