axum_core::extract

Trait FromRequest

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pub trait FromRequest<S, M = ViaRequest>: Sized {
    type Rejection: IntoResponse;

    // Required method
    fn from_request<'life0, 'async_trait>(
        req: Request,
        state: &'life0 S,
    ) -> Pin<Box<dyn Future<Output = Result<Self, Self::Rejection>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
}
Expand description

Types that can be created from requests.

Extractors that implement FromRequest can consume the request body and can thus only be run once for handlers.

If your extractor doesn’t need to consume the request body then you should implement FromRequestParts and not FromRequest.

See axum::extract for more general docs about extractors.

Required Associated Types§

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type Rejection: IntoResponse

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

Required Methods§

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

Perform the extraction.

Object Safety§

This trait is not object safe.

Implementations on Foreign Types§

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impl<S> FromRequest<S> for String
where S: Send + Sync,

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type Rejection = StringRejection

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

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impl<S> FromRequest<S> for Bytes
where S: Send + Sync,

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type Rejection = BytesRejection

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

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impl<S> FromRequest<S> for BytesMut
where S: Send + Sync,

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type Rejection = BytesRejection

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

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impl<S, T1> FromRequest<S> for (T1,)
where T1: FromRequest<S> + Send, S: Send + Sync,

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type Rejection = Response<Body>

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

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impl<S, T1, T2> FromRequest<S> for (T1, T2)
where T1: FromRequestParts<S> + Send, T2: FromRequest<S> + Send, S: Send + Sync,

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type Rejection = Response<Body>

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

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impl<S, T1, T2, T3> FromRequest<S> for (T1, T2, T3)
where T1: FromRequestParts<S> + Send, T2: FromRequestParts<S> + Send, T3: FromRequest<S> + Send, S: Send + Sync,

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type Rejection = Response<Body>

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

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impl<S, T1, T2, T3, T4> FromRequest<S> for (T1, T2, T3, T4)
where T1: FromRequestParts<S> + Send, T2: FromRequestParts<S> + Send, T3: FromRequestParts<S> + Send, T4: FromRequest<S> + Send, S: Send + Sync,

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type Rejection = Response<Body>

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

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impl<S, T1, T2, T3, T4, T5> FromRequest<S> for (T1, T2, T3, T4, T5)
where T1: FromRequestParts<S> + Send, T2: FromRequestParts<S> + Send, T3: FromRequestParts<S> + Send, T4: FromRequestParts<S> + Send, T5: FromRequest<S> + Send, S: Send + Sync,

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type Rejection = Response<Body>

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

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impl<S, T1, T2, T3, T4, T5, T6> FromRequest<S> for (T1, T2, T3, T4, T5, T6)
where T1: FromRequestParts<S> + Send, T2: FromRequestParts<S> + Send, T3: FromRequestParts<S> + Send, T4: FromRequestParts<S> + Send, T5: FromRequestParts<S> + Send, T6: FromRequest<S> + Send, S: Send + Sync,

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type Rejection = Response<Body>

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

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impl<S, T1, T2, T3, T4, T5, T6, T7> FromRequest<S> for (T1, T2, T3, T4, T5, T6, T7)
where T1: FromRequestParts<S> + Send, T2: FromRequestParts<S> + Send, T3: FromRequestParts<S> + Send, T4: FromRequestParts<S> + Send, T5: FromRequestParts<S> + Send, T6: FromRequestParts<S> + Send, T7: FromRequest<S> + Send, S: Send + Sync,

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type Rejection = Response<Body>

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

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impl<S, T1, T2, T3, T4, T5, T6, T7, T8> FromRequest<S> for (T1, T2, T3, T4, T5, T6, T7, T8)
where T1: FromRequestParts<S> + Send, T2: FromRequestParts<S> + Send, T3: FromRequestParts<S> + Send, T4: FromRequestParts<S> + Send, T5: FromRequestParts<S> + Send, T6: FromRequestParts<S> + Send, T7: FromRequestParts<S> + Send, T8: FromRequest<S> + Send, S: Send + Sync,

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type Rejection = Response<Body>

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

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impl<S, T1, T2, T3, T4, T5, T6, T7, T8, T9> FromRequest<S> for (T1, T2, T3, T4, T5, T6, T7, T8, T9)

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type Rejection = Response<Body>

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

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impl<S, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> FromRequest<S> for (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10)

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type Rejection = Response<Body>

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

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impl<S, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> FromRequest<S> for (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11)

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type Rejection = Response<Body>

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

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impl<S, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> FromRequest<S> for (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12)

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type Rejection = Response<Body>

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

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impl<S, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13> FromRequest<S> for (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13)

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type Rejection = Response<Body>

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

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impl<S, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14> FromRequest<S> for (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14)

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type Rejection = Response<Body>

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

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impl<S, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> FromRequest<S> for (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15)

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type Rejection = Response<Body>

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

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impl<S, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16> FromRequest<S> for (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16)

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type Rejection = Response<Body>

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

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impl<S, T> FromRequest<S> for Option<T>
where T: FromRequest<S>, S: Send + Sync,

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type Rejection = Infallible

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fn from_request<'life0, 'async_trait>( req: Request, state: &'life0 S, ) -> Pin<Box<dyn Future<Output = Result<Option<T>, Self::Rejection>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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impl<S, T> FromRequest<S> for Result<T, T::Rejection>
where T: FromRequest<S>, S: Send + Sync,

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type Rejection = Infallible

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

Implementors§