1 files changed, 58 insertions, 0 deletions
diff --git a/third_party/rust/warp/examples/handlebars_template.rs b/third_party/rust/warp/examples/handlebars_template.rs
new file mode 100644
index 0000000000..78e040539e
--- /dev/null
+++ b/third_party/rust/warp/examples/handlebars_template.rs
@@ -0,0 +1,58 @@
+#![deny(warnings)]
+use std::sync::Arc;
+
+use handlebars::Handlebars;
+use serde::Serialize;
+use serde_json::json;
+use warp::Filter;
+
+struct WithTemplate<T: Serialize> {
+    name: &'static str,
+    value: T,
+}
+
+fn render<T>(template: WithTemplate<T>, hbs: Arc<Handlebars<'_>>) -> impl warp::Reply
+where
+    T: Serialize,
+{
+    let render = hbs
+        .render(template.name, &template.value)
+        .unwrap_or_else(|err| err.to_string());
+    warp::reply::html(render)
+}
+
+#[tokio::main]
+async fn main() {
+    let template = "<!DOCTYPE html>
+                    <html>
+                      <head>
+                        <title>Warp Handlebars template example</title>
+                      </head>
+                      <body>
+                        <h1>Hello {{user}}!</h1>
+                      </body>
+                    </html>";
+
+    let mut hb = Handlebars::new();
+    // register the template
+    hb.register_template_string("template.html", template)
+        .unwrap();
+
+    // Turn Handlebars instance into a Filter so we can combine it
+    // easily with others...
+    let hb = Arc::new(hb);
+
+    // Create a reusable closure to render template
+    let handlebars = move |with_template| render(with_template, hb.clone());
+
+    //GET /
+    let route = warp::get()
+        .and(warp::path::end())
+        .map(|| WithTemplate {
+            name: "template.html",
+            value: json!({"user" : "Warp"}),
+        })
+        .map(handlebars);
+
+    warp::serve(route).run(([127, 0, 0, 1], 3030)).await;
+}