cleanup examples

examples/basic.rs

@@ -90,7 +90,7 @@ fn main() {
                 httpcodes::HTTPFound
                     .build()
                     .header("LOCATION", "/index.html")
-                    .body(Body::Empty)
+                    .finish()
             })))
         .bind("127.0.0.1:8080").unwrap()
         .start();

examples/diesel/src/main.rs

@@ -19,7 +19,7 @@ extern crate env_logger;
 use actix_web::*;
 use actix::prelude::*;
 use diesel::prelude::*;
-use futures::future::{Future, ok};
+use futures::future::Future;
 
 mod models;
 mod schema;
@@ -35,13 +35,13 @@ fn index(req: HttpRequest<State>) -> Box<Future<Item=HttpResponse, Error=Error>>
 
     Box::new(
         req.state().db.call_fut(CreateUser{name: name.to_owned()})
+            .from_err()
             .and_then(|res| {
                 match res {
-                    Ok(user) => ok(httpcodes::HTTPOk.build().json(user).unwrap()),
-                    Err(_) => ok(httpcodes::HTTPInternalServerError.response())
+                    Ok(user) => Ok(httpcodes::HTTPOk.build().json(user)?),
+                    Err(_) => Ok(httpcodes::HTTPInternalServerError.response())
                 }
-            })
-            .map_err(|e| error::ErrorInternalServerError(e).into()))
+            }))
 }
 
 /// This is db executor actor. We are going to run 3 of them in parallele.

examples/multipart/src/main.rs

@@ -16,7 +16,7 @@ fn index(mut req: HttpRequest) -> Box<Future<Item=HttpResponse, Error=Error>>
 
     Box::new(
         req.multipart()            // <- get multipart stream for current request
-            .map_err(Error::from)  // <- convert multipart errors
+            .from_err()            // <- convert multipart errors
             .and_then(|item| {     // <- iterate over multipart items
                 match item {
                     // Handle multipart Field

examples/template_tera/src/main.rs

@@ -9,19 +9,20 @@ struct State {
     template: tera::Tera,  // <- store tera template in application state
 }
 
-fn index(req: HttpRequest<State>) -> HttpResponse {
+fn index(req: HttpRequest<State>) -> Result<HttpResponse> {
     let s = if let Some(name) = req.query().get("name") { // <- submitted form
         let mut ctx = tera::Context::new();
         ctx.add("name", name);
         ctx.add("text", &"Welcome!".to_owned());
-        req.state().template.render("user.html", &ctx).unwrap()
+        req.state().template.render("user.html", &ctx)
+            .map_err(|_| error::ErrorInternalServerError("Template error"))?
     } else {
-        req.state().template.render("index.html", &tera::Context::new()).unwrap()
+        req.state().template.render("index.html", &tera::Context::new())
+            .map_err(|_| error::ErrorInternalServerError("Template error"))?
     };
-    httpcodes::HTTPOk.build()
-        .content_type("text/html")
-        .body(s)
-        .unwrap()
+    Ok(httpcodes::HTTPOk.build()
+       .content_type("text/html")
+       .body(s)?)
 }
 
 fn main() {

examples/websocket-chat/src/main.rs

@@ -200,12 +200,12 @@ fn main() {
             let state = WsChatSessionState { addr: server.clone() };
 
             Application::with_state(state)
-            // redirect to websocket.html
-                .resource("/", |r| r.method(Method::GET).f(|req| {
+                // redirect to websocket.html
+                .resource("/", |r| r.method(Method::GET).f(|_| {
                     httpcodes::HTTPFound
                         .build()
                         .header("LOCATION", "/static/websocket.html")
-                        .body(Body::Empty)
+                        .finish()
                 }))
                 // websocket
                 .resource("/ws/", |r| r.route().f(chat_route))