Add actix-web v3 support (#228)

* Add actix-web v3 support

* Add actix-web example

* Resolve changelog PR number

* Make sure that examples are built on CI

* Format Cargo.toml consistently

Co-authored-by: Chris Wong <lambda.fairy@gmail.com>

.travis.yml

@@ -21,7 +21,7 @@ jobs:
     # build and rarely break. Speed up CI by checking them separately.
     - name: "All features"
       script:
-        - cargo check --workspace --all-features
+        - cargo check --workspace --all-features --all-targets
     - name: "Benchmarks"
       script:
         - (cd benchmarks && cargo test --benches --locked)

CHANGELOG.md

@@ -1,6 +1,8 @@
 # Change Log
 
 ## [Unreleased]
+- [Changed] Add support for Actix Web 3.0.0. Actix Web 2.0.0 support is retained.
+  [#228](https://github.com/lambda-fairy/maud/pull/228)
 
 ## [0.22.0] - 2020-06-20
 - [Changed] Update Actix to 2.0.0. Actix 1.0.0 is no longer supported.

maud/Cargo.toml

@@ -15,15 +15,15 @@ edition = "2018"
 default = []
 
 # Web framework integrations
-actix-web = ["actix-web-dep", "futures"]
+actix-web = ["actix-web-dep", "futures-util"]
 
 [dependencies]
 maud_htmlescape = { version = "0.17.0", path = "../maud_htmlescape" }
 maud_macros = { version = "0.22.0", path = "../maud_macros" }
 iron = { version = ">= 0.5.1, < 0.7.0", optional = true }
 rocket = { version = ">= 0.3, < 0.5", optional = true }
-futures = { version = "0.3.0", optional = true }
-actix-web-dep = { version = "2.0.0", optional = true, default-features = false, package = "actix-web" }
+futures-util = { version = "0.3.0", optional = true, default-features = false }
+actix-web-dep = { package = "actix-web", version = ">= 2, < 4", optional = true, default-features = false }
 
 [dev-dependencies]
 trybuild = { version = "1.0.33", features = ["diff"] }
@@ -33,3 +33,7 @@ travis-ci = { repository = "lambda-fairy/maud" }
 
 [package.metadata.docs.rs]
 all-features = true
+
+[[example]]
+name = "actix"
+required-features = ["actix-web"]

maud/examples/actix.rs

@@ -0,0 +1,25 @@
+// do not use this line in your application
+use actix_web_dep as actix_web;
+
+use actix_web::{get, App, HttpServer, Result as AwResult};
+use maud::{html, Markup};
+use std::io;
+
+#[get("/")]
+async fn index() -> AwResult<Markup> {
+    Ok(html! {
+        html {
+            body {
+                h1 { "Hello World!" }
+            }
+        }
+    })
+}
+
+#[actix_web::main]
+async fn main() -> io::Result<()> {
+    HttpServer::new(|| App::new().service(index))
+        .bind(("127.0.0.1", 8080))?
+        .run()
+        .await
+}

maud/src/lib.rs

@@ -7,13 +7,6 @@
 
 #![doc(html_root_url = "https://docs.rs/maud/0.22.0")]
 
-#[cfg(feature = "actix-web")]
-extern crate actix_web_dep;
-#[cfg(feature = "iron")]
-extern crate iron;
-#[cfg(feature = "rocket")]
-extern crate rocket;
-
 use std::fmt::{self, Write};
 
 pub use maud_macros::{html, html_debug};
@@ -218,7 +211,7 @@ mod rocket_support {
 mod actix_support {
     use crate::PreEscaped;
     use actix_web_dep::{Error, HttpRequest, HttpResponse, Responder};
-    use futures::future::{ok, Ready};
+    use futures_util::future::{ok, Ready};
 
     impl Responder for PreEscaped<String> {
         type Error = Error;