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Code Issues Releases Wiki Activity

rename FromRequest trait to Responder

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This commit is contained in:
Nikolay Kim
2017-12-14 09:43:42 -08:00
parent 355f54efe2
commit c98d320f8c
9 changed files with 76 additions and 72 deletions
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14
guide/src/qs_4.md
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@ -4,14 +4,14 @@ A request handler can by any object that implements
[`Handler` trait](../actix_web/dev/trait.Handler.html#implementors).
Request handling happen in two stages. First handler object get called.
Handle can return any object that implements
[`FromRequest` trait](../actix_web/trait.FromRequest.html#foreign-impls).
Then `from_request()` get called on returned object. And finally
result of the `from_request()` call get converted to `Reply` object.
[*Responder trait*](../actix_web/trait.Responder.html#foreign-impls).
Then `respond_to()` get called on returned object. And finally
result of the `respond_to()` call get converted to `Reply` object.
By default actix provides several `FromRequest` implementations for some standard types,
By default actix provides `Responder` implementations for some standard types,
like `&'static str`, `String`, etc.
For complete list of implementations check
[FromRequest documentation](../actix_web/trait.FromRequest.html#foreign-impls).
[Responder documentation](../actix_web/trait.Responder.html#foreign-impls).
Examples of valid handlers:
@ -59,11 +59,11 @@ struct MyObj {
}
/// we have to convert Error into HttpResponse as well
impl FromRequest for MyObj {
impl Responder for MyObj {
type Item = HttpResponse;
type Error = Error;
fn from_request(self, req: HttpRequest) -> Result<HttpResponse> {
fn respond_to(self, req: HttpRequest) -> Result<HttpResponse> {
let body = serde_json::to_string(&self)?;
// Create response and set content type

4
guide/src/qs_4_5.md
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@ -5,11 +5,11 @@ and [`ResponseError` trait](../actix_web/error/trait.ResponseError.html)
for handling handler's errors.
Any error that implements `ResponseError` trait can be returned as error value.
*Handler* can return *Result* object, actix by default provides
`FromRequest` implemenation for compatible result object. Here is implementation
`Responder` implemenation for compatible result object. Here is implementation
definition:
```rust,ignore
impl<T: FromRequest, E: Into<Error>> FromRequest for Result<T, E>
impl<T: Responder, E: Into<Error>> Responder for Result<T, E>
```
And any error that implements `ResponseError` can be converted into `Error` object.