Provide more data in Path deserialization error (#574)

* Provide more error in `Path` deserialization error

* Rename

* Add error kind for deserializing sequences

* Rename

* Fix wrong docs

* Rename `MissingRouteParams`

* Rename error to have more consistency

* Rename internal error

* Update changelog

* One last renaming, for now

* Add tests

* Tweak changelog a bit

Author: davidpdrsn

axum/CHANGELOG.md

@@ -46,6 +46,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - **breaking:** The `Body` and `BodyError` associated types on the
   `IntoResponse` trait have been removed - instead, `.into_response()` will now
   always return `Response<BoxBody>` ([#571])
+- **breaking:** `PathParamsRejection` has been renamed to `PathRejection` and its
+  variants renamed to `FailedToDeserializePathParams` and `MissingPathParams`. This
+  makes it more consistent with the rest of axum ([#574])
+- **added:** `Path`'s rejection type now provides data about exactly which part of
+  the path couldn't be deserialized ([#574])
 
 [#525]: https://github.com/tokio-rs/axum/pull/525
 [#527]: https://github.com/tokio-rs/axum/pull/527
@@ -54,6 +59,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#554]: https://github.com/tokio-rs/axum/pull/554
 [#564]: https://github.com/tokio-rs/axum/pull/564
 [#571]: https://github.com/tokio-rs/axum/pull/571
+[#574]: https://github.com/tokio-rs/axum/pull/574
 
 # 0.3.3 (13. November, 2021)
 

axum/src/extract/mod.rs

@@ -6,6 +6,7 @@ use rejection::*;
 
 pub mod connect_info;
 pub mod extractor_middleware;
+pub mod path;
 pub mod rejection;
 
 #[cfg(feature = "ws")]
@@ -16,7 +17,6 @@ mod content_length_limit;
 mod extension;
 mod form;
 mod matched_path;
-mod path;
 mod query;
 mod raw_query;
 mod request_parts;