tweak docs

actix-web/CHANGES.md

@@ -1,7 +1,10 @@
 # Changelog
 
 ## Unreleased - 2021-xx-xx
-- Add `ServiceRequest::extract` to make it easier to use extractors when writing middlewares.
+- Add `ServiceRequest::extract` to make it easier to use extractors when writing middlewares. [#2647]
+
+[#2647]: https://github.com/actix/actix-web/pull/2647
+
 
 ## 4.0.1 - 2022-02-25
 ### Fixed

actix-web/src/extract.rs

@@ -18,12 +18,11 @@ use crate::{dev::Payload, Error, HttpRequest};
 /// A type that implements [`FromRequest`] is called an **extractor** and can extract data from
 /// the request. Some types that implement this trait are: [`Json`], [`Header`], and [`Path`].
 ///
-/// Check out [`ServiceRequest::extract`](crate::dev::ServiceRequest::extract) if you want to leverage
+/// Check out [`ServiceRequest::extract`](crate::dev::ServiceRequest::extract) if you want to
-/// extractors when implementing middlewares.
+/// leverage extractors when implementing middlewares.
 ///
 /// # Configuration
 /// An extractor can be customized by injecting the corresponding configuration with one of:
-///
 /// - [`App::app_data()`][crate::App::app_data]
 /// - [`Scope::app_data()`][crate::Scope::app_data]
 /// - [`Resource::app_data()`][crate::Resource::app_data]

actix-web/src/service.rs

@@ -95,20 +95,20 @@ impl ServiceRequest {
         (&mut self.req, &mut self.payload)
     }
 
-    /// Use an [extractor](crate::FromRequest) to build a type out of the incoming request.  
+    /// Derives a type from this request using an [extractor](crate::FromRequest).
     ///
-    /// `extract` is particularly handy when you need to use an extractor inside
+    /// Returns the `T` extractor's `Future` type which can be `await`ed. This is particularly handy
-    /// a middleware implementation.
+    /// when you want to use an extractor in a middleware implementation.
     ///
-    /// # Example
+    /// # Examples
+    /// ```
+    /// use actix_web::{
+    ///     dev::{ServiceRequest, ServiceResponse},
+    ///     web::Path, Error
+    /// };
     ///
-    /// ```rust
+    /// async fn my_helper(mut srv_req: ServiceRequest) -> Result<ServiceResponse, Error> {
-    /// use actix_web::dev::{ServiceRequest, ServiceResponse};
+    ///     let path = srv_req.extract::<Path<(String, u32)>>().await?;
-    /// use actix_web::web::Path;
-    /// use actix_web::Error;
-    ///
-    /// async fn f(mut service_request: ServiceRequest) -> Result<ServiceResponse, Error> {
-    ///     let path = service_request.extract::<Path<(String, u32)>>().await?;
     ///     // [...]
     /// #   todo!()
     /// }