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Code Issues Releases Wiki Activity

Improve extractor examples

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To use `SomeType::extract(&req)` it should be mentioned at least once that `use actix_web::FromRequest` is required. Also extract takes `HttpRequest` by reference.
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Fabian Neumann 2018-05-28 20:55:13 +02:00 committed by GitHub
parent 5e9f6dd111
commit 1019dd2fb4
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1 changed files with 7 additions and 5 deletions
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content/docs/extractors.md
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@ -29,9 +29,11 @@ fn index(params: Path<(String, String,)>, info: Json<MyInfo>) -> HttpResponse {
// Option 2: accessed by calling extract() on the Extractor
use actix_web::FromRequest;
fn index(req: HttpRequest) -> HttpResponse {
let params = Path::<(String, String)>::extract(req);
let info = Json::<MyInfo>::extract(req);
let params = Path::<(String, String)>::extract(&req);
let info = Json::<MyInfo>::extract(&req);
...
}
@ -40,7 +42,7 @@ fn index(req: HttpRequest) -> HttpResponse {
## Within Custom Handler Types
Like a handler function, a custom Handler type can *access* an Extractor by
calling the ExtractorType::<...>::extract(req) function. An Extractor
calling the ExtractorType::<...>::extract(&req) function. An Extractor
*cannot* be passed as a parameter to a custom Handler type because a custom
Handler type must follow the ``handle`` function signature specified by the
Handler trait it implements.
@ -54,8 +56,8 @@ impl<S> Handler<S> for MyHandler {
/// Handle request
fn handle(&mut self, req: HttpRequest<S>) -> Self::Result {
let params = Path::<(String, String)>::extract(req);
let info = Json::<MyInfo>::extract(req);
let params = Path::<(String, String)>::extract(&req);
let info = Json::<MyInfo>::extract(&req);
...