add tera example

examples/template_tera/src/main.rs

@@ -0,0 +1,44 @@
+extern crate actix;
+extern crate actix_web;
+extern crate env_logger;
+#[macro_use]
+extern crate tera;
+use actix_web::*;
+
+struct State {
+    template: tera::Tera,  // <- store tera template in application state
+}
+
+fn index(req: HttpRequest<State>) -> 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()
+    } else {
+        req.state().template.render("index.html", &tera::Context::new()).unwrap()
+    };
+    httpcodes::HTTPOk.build()
+        .content_type("text/html")
+        .body(s)
+        .unwrap()
+}
+
+fn main() {
+    ::std::env::set_var("RUST_LOG", "actix_web=info");
+    let _ = env_logger::init();
+    let sys = actix::System::new("tera-example");
+
+    HttpServer::new(|| {
+        let tera = compile_templates!(concat!(env!("CARGO_MANIFEST_DIR"), "/templates/**/*"));
+
+        Application::with_state(State{template: tera})
+            // enable logger
+            .middleware(middlewares::Logger::default())
+            .resource("/", |r| r.method(Method::GET).f(index))})
+        .bind("127.0.0.1:8080").unwrap()
+        .start().unwrap();
+
+    println!("Started http server: 127.0.0.1:8080");
+    let _ = sys.run();
+}