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docs: Add links to more examples of Result-returning handlers. (#2049)

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Co-authored-by: David Pedersen <david.pdrsn@gmail.com>
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Vitaly Shukela 2023-06-23 00:41:13 +03:00 • committed by GitHub
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10
axum/src/docs/error_handling.md
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@ -38,6 +38,16 @@ It doesn't matter whether you return `Err(StatusCode::NOT_FOUND)` or
`Err(StatusCode::INTERNAL_SERVER_ERROR)`. These are not considered errors in
axum.
Instead of a direct `StatusCode`, it makes sense to use intermediate error type
that can ultimately be converted to `Reponse`. This allows using `?` operator
in handlers. See those examples:
* [`anyhow-error-response`][anyhow] for generic boxed errors
* [`error-handling-and-dependency-injection`][ehdi] for application-specific detailed errors
[anyhow]:https://github.com/tokio-rs/axum/blob/main/examples/anyhow-error-response/src/main.rs
[ehdi]:https://github.com/tokio-rs/axum/blob/main/examples/error-handling-and-dependency-injection/src/main.rs
This also applies to extractors. If an extractor doesn't match the request the
request will be rejected and a response will be returned without calling your
handler. See [`extract`](crate::extract) to learn more about handling extractor

10
axum/src/handler/mod.rs
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@ -32,6 +32,16 @@
//! }
//! ```
//!
//! Instead of a direct `StatusCode`, it makes sense to use intermediate error type
//! that can ultimately be converted to `Reponse`. This allows using `?` operator
//! in handlers. See those examples:
//!
//! * [`anyhow-error-response`][anyhow] for generic boxed errors
//! * [`error-handling-and-dependency-injection`][ehdi] for application-specific detailed errors
//!
//! [anyhow]:https://github.com/tokio-rs/axum/blob/main/examples/anyhow-error-response/src/main.rs
//! [ehdi]:https://github.com/tokio-rs/axum/blob/main/examples/error-handling-and-dependency-injection/src/main.rs
//!
#![doc = include_str!("../docs/debugging_handler_type_errors.md")]
#[cfg(feature = "tokio")]