## 1.0.1
- Cors middleware has been moved to `actix-cors` crate
instead of
```rust
use actix_web::middleware::cors::Cors;
```
use
```rust
use actix_cors::Cors;
```
- Identity middleware has been moved to `actix-identity` crate
instead of
```rust
use actix_web::middleware::identity::{Identity, CookieIdentityPolicy, IdentityService};
```
use
```rust
use actix_identity::{Identity, CookieIdentityPolicy, IdentityService};
```
## 1.0.0
- Extractor configuration. In version 1.0 this is handled with the new `Data` mechanism for both setting and retrieving the configuration
instead of
```rust
#[derive(Default)]
struct ExtractorConfig {
config: String,
}
impl FromRequest for YourExtractor {
type Config = ExtractorConfig;
type Result = Result<YourExtractor, Error>;
fn from_request(req: &HttpRequest, cfg: &Self::Config) -> Self::Result {
println!("use the config: {:?}", cfg.config);
...
}
}
App::new().resource("/route_with_config", |r| {
r.post().with_config(handler_fn, |cfg| {
cfg.0.config = "test".to_string();
})
})
```
use the HttpRequest to get the configuration like any other `Data` with `req.app_data::<C>()` and set it with the `data()` method on the `resource`
```rust
#[derive(Default)]
struct ExtractorConfig {
config: String,
}
impl FromRequest for YourExtractor {
type Error = Error;
type Future = Result<Self, Self::Error>;
type Config = ExtractorConfig;
fn from_request(req: &HttpRequest, payload: &mut Payload) -> Self::Future {
let cfg = req.app_data::<ExtractorConfig>();
println!("config data?: {:?}", cfg.unwrap().role);
...
}
}
App::new().service(
resource("/route_with_config")
.data(ExtractorConfig {
config: "test".to_string(),
})
.route(post().to(handler_fn)),
)
```
- Resource registration. 1.0 version uses generalized resource registration via `.service()` method.
instead of
```rust
App.new().resource("/welcome", |r| r.f(welcome))
```
use App's or Scope's `.service()` method. `.service()` method accepts object that implements `HttpServiceFactory` trait. By default actix-web provides `Resource` and `Scope` services.
```rust
App.new().service(
web::resource("/welcome")
.route(web::get().to(welcome))
.route(web::post().to(post_handler))
```
- Scope registration.
instead of
```rust
let app = App::new().scope("/{project_id}", |scope| {
scope
.resource("/path1", |r| r.f(|_| HttpResponse::Ok()))
.resource("/path2", |r| r.f(|_| HttpResponse::Ok()))
.resource("/path3", |r| r.f(|_| HttpResponse::MethodNotAllowed()))
});
```
use `.service()` for registration and `web::scope()` as scope object factory.
```rust
let app = App::new().service(
web::scope("/{project_id}")
.service(web::resource("/path1").to(|| HttpResponse::Ok()))
.service(web::resource("/path2").to(|| HttpResponse::Ok()))
.service(web::resource("/path3").to(|| HttpResponse::MethodNotAllowed()))
);
```
- `.with()`, `.with_async()` registration methods have been renamed to `.to()` and `.to_async()`.
instead of
```rust
App.new().resource("/welcome", |r| r.with(welcome))
```
use `.to()` or `.to_async()` methods
```rust
App.new().service(web::resource("/welcome").to(welcome))
```
- Passing arguments to handler with extractors, multiple arguments are allowed
instead of
```rust
fn welcome((body, req): (Bytes, HttpRequest)) -> ... {
...
}
```
use multiple arguments
```rust
fn welcome(body: Bytes, req: HttpRequest) -> ... {
...
}
```
- `.f()`, `.a()` and `.h()` handler registration methods have been removed. Use `.to()` for handlers and `.to_async()` for async handlers. Handler function must use extractors.
instead of
```rust
App.new().resource("/welcome", |r| r.f(welcome))
```
use App's `to()` or `to_async()` methods
```rust
App.new().service(web::resource("/welcome").to(welcome))
```
- `HttpRequest` does not provide access to request's payload stream.
instead of
```rust
fn index(req: &HttpRequest) -> Box<Future<Item=HttpResponse, Error=Error>> {
req
.payload()
.from_err()
.fold((), |_, chunk| {
...
})
.map(|_| HttpResponse::Ok().finish())
.responder()
}
```
use `Payload` extractor
```rust
fn index(stream: web::Payload) -> impl Future<Item=HttpResponse, Error=Error> {
stream
.from_err()
.fold((), |_, chunk| {
...
})
.map(|_| HttpResponse::Ok().finish())
}
```
- `State` is now `Data`. You register Data during the App initialization process and then access it from handlers either using a Data extractor or using HttpRequest's api.
instead of
```rust
App.with_state(T)
```
use App's `data` method
```rust
App.new()
.data(T)
```
and either use the Data extractor within your handler
```rust
use actix_web::web::Data;
fn endpoint_handler(Data<T>)){
...
}
```
.. or access your Data element from the HttpRequest
```rust
fn endpoint_handler(req: HttpRequest) {
let data: Option<Data<T>> = req.app_data::<T>();
}
```
- AsyncResponder is removed, use `.to_async()` registration method and `impl Future<>` as result type.
instead of
```rust
use actix_web::AsyncResponder;
fn endpoint_handler(...) -> impl Future<Item=HttpResponse, Error=Error>{
...
.responder()
}
```
.. simply omit AsyncResponder and the corresponding responder() finish method
- Middleware
instead of
```rust
let app = App::new()
.middleware(middleware::Logger::default())
```
use `.wrap()` method
```rust
let app = App::new()
.wrap(middleware::Logger::default())
.route("/index.html", web::get().to(index));
```
- `HttpRequest::body()`, `HttpRequest::urlencoded()`, `HttpRequest::json()`, `HttpRequest::multipart()` method have been removed. Use `Bytes`, `String`, `Form`, `Json`, `Multipart` extractors instead.
instead of
```rust
fn index(req: &HttpRequest) -> Responder {
req.body()
.and_then(|body| {
...
})
}
```
use
```rust
fn index(body: Bytes) -> Responder {
...
}
```
- `actix_web::server` module has been removed. To start http server use `actix_web::HttpServer` type
- StaticFiles and NamedFile have been moved to a separate crate.
instead of `use actix_web::fs::StaticFile`
use `use actix_files::Files`
instead of `use actix_web::fs::Namedfile`
use `use actix_files::NamedFile`
- Multipart has been moved to a separate crate.
instead of `use actix_web::multipart::Multipart`
use `use actix_multipart::Multipart`
- Response compression is not enabled by default. To enable, use `Compress` middleware, `App::new().wrap(Compress::default())`.
- Session middleware moved to actix-session crate
- Actors support have been moved to `actix-web-actors` crate
- Custom Error
Instead of error_response method alone, ResponseError now provides two methods: error_response and render_response respectively. Where, error_response creates the error response and render_response returns the error response to the caller.
Simplest migration from 0.7 to 1.0 shall include below method to the custom implementation of ResponseError:
```rust
fn render_response(&self) -> HttpResponse {
self.error_response()
}
```