Struct axum::extract::path::Path

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pub struct Path<T>(pub T);
Expand description

Extractor that will get captures from the URL and parse them using serde.

Any percent encoded parameters will be automatically decoded. The decoded parameters must be valid UTF-8, otherwise Path will fail and return a 400 Bad Request response.

Example

These examples assume the serde feature of the uuid crate is enabled.

use axum::{
    extract::Path,
    routing::get,
    Router,
};
use uuid::Uuid;

async fn users_teams_show(
    Path((user_id, team_id)): Path<(Uuid, Uuid)>,
) {
    // ...
}

let app = Router::new().route("/users/:user_id/team/:team_id", get(users_teams_show));

If the path contains only one parameter, then you can omit the tuple.

use axum::{
    extract::Path,
    routing::get,
    Router,
};
use uuid::Uuid;

async fn user_info(Path(user_id): Path<Uuid>) {
    // ...
}

let app = Router::new().route("/users/:user_id", get(user_info));

Path segments also can be deserialized into any type that implements serde::Deserialize. This includes tuples and structs:

use axum::{
    extract::Path,
    routing::get,
    Router,
};
use serde::Deserialize;
use uuid::Uuid;

// Path segment labels will be matched with struct field names
#[derive(Deserialize)]
struct Params {
    user_id: Uuid,
    team_id: Uuid,
}

async fn users_teams_show(
    Path(Params { user_id, team_id }): Path<Params>,
) {
    // ...
}

// When using tuples the path segments will be matched by their position in the route
async fn users_teams_create(
    Path((user_id, team_id)): Path<(String, String)>,
) {
    // ...
}

let app = Router::new().route(
    "/users/:user_id/team/:team_id",
    get(users_teams_show).post(users_teams_create),
);

If you wish to capture all path parameters you can use HashMap or Vec:

use axum::{
    extract::Path,
    routing::get,
    Router,
};
use std::collections::HashMap;

async fn params_map(
    Path(params): Path<HashMap<String, String>>,
) {
    // ...
}

async fn params_vec(
    Path(params): Path<Vec<(String, String)>>,
) {
    // ...
}

let app = Router::new()
    .route("/users/:user_id/team/:team_id", get(params_map).post(params_vec));

Providing detailed rejection output

If the URI cannot be deserialized into the target type the request will be rejected and an error response will be returned. See customize-path-rejection for an example of how to customize that error.

Tuple Fields§

§0: T

Trait Implementations§

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impl<T: Debug> Debug for Path<T>

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

Formats the value using the given formatter. Read more
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impl<T> Deref for Path<T>

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type Target = T

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.
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impl<T> DerefMut for Path<T>

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fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.
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impl<T, S> FromRequestParts<S> for Path<T>where T: DeserializeOwned + Send, S: Send + Sync,

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type Rejection = PathRejection

If the extractor fails it’ll use this “rejection” type. A rejection is a kind of error that can be converted into a response.
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fn from_request_parts<'life0, 'life1, 'async_trait>( parts: &'life0 mut Parts, _state: &'life1 S ) -> Pin<Box<dyn Future<Output = Result<Self, Self::Rejection>> + Send + 'async_trait>>where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Perform the extraction.

Auto Trait Implementations§

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impl<T> RefUnwindSafe for Path<T>where T: RefUnwindSafe,

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impl<T> Send for Path<T>where T: Send,

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impl<T> Sync for Path<T>where T: Sync,

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impl<T> Unpin for Path<T>where T: Unpin,

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impl<T> UnwindSafe for Path<T>where T: UnwindSafe,

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<S, B, T> FromRequest<S, B, ViaParts> for Twhere B: Send + 'static, S: Send + Sync, T: FromRequestParts<S>,

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type Rejection = <T as FromRequestParts<S>>::Rejection

If the extractor fails it’ll use this “rejection” type. A rejection is a kind of error that can be converted into a response.
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fn from_request<'life0, 'async_trait>( req: Request<B>, state: &'life0 S ) -> Pin<Box<dyn Future<Output = Result<T, <T as FromRequest<S, B, ViaParts>>::Rejection>> + Send + 'async_trait, Global>>where 'life0: 'async_trait, T: 'async_trait,

Perform the extraction.
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for Twhere 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> PolicyExt for Twhere T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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impl<T> Same<T> for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for Twhere 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 Twhere 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.
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impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more