Properly handle template inheritence

src/handlers.rs

@@ -1,56 +1,18 @@
-use handlebars::{Handlebars, no_escape};
-use handlebars_iron::{DirectorySource, HandlebarsEngine};
+
 use handlebars_iron::handlebars::to_json;
 use handlebars_iron::Template;
 use iron::prelude::{Request, Response};
 use iron::{IronResult, Set, status};
 use mount::Mount;
 use serde::ser::Serialize as ToJson;
-use serde_json::value::Map;
+use serde_json::value::{Map, Value};
 use staticfile::Static;
 use std::error::Error;
 use std::path::Path;
-use std::sync::Arc;
 
-pub fn template_engine() -> Arc<HandlebarsEngine> {
-    let views_ext = ".hbs";
-    let views_path = "./src/views";
-
-    let mut hbs = Handlebars::new();
-
-    // @TODO Find better solution for rendering included template file
-    hbs.register_escape_fn(no_escape);
-
-
-    let mut hbse = HandlebarsEngine::from(hbs);
-    hbse.add(Box::new(
-        DirectorySource::new(views_path, views_ext)
-    ));
-
-    if let Err(r) = hbse.reload() {
-        panic!("{:?}", r.description());
-    }
-
-    let hbse_ref = Arc::new(hbse);
-    if cfg!(debug_assertions) {
-        println!("Templates are being watched.");
-        use handlebars_iron::Watchable;
-        hbse_ref.watch(views_path);
-    }
-
-    hbse_ref
-}
-
-pub fn render_page<T: ToJson>(name: &str, template_data: T) -> Template {
-    let template_engine = template_engine().clone();
-    let template_registry = template_engine.handlebars_mut();
-
-    let page = template_registry.render(name, &template_data).unwrap();
-
-    let mut data = Map::new();
-    data.insert("page".to_string(), to_json(page));
-
-    Template::new("layout/base", data)
+pub fn render_page(name: &str, mut template_data: Map<String, Value>) -> Template {
+    template_data.insert("parent".to_string(), to_json(&"layout/base".to_owned()));
+    Template::new(name, template_data)
 }
 
 pub struct AssetsHandler;

src/main.rs

@@ -2,9 +2,38 @@
 #[macro_use] extern crate mime;
 
 use env_logger;
+use handlebars::Handlebars;
+use handlebars_iron::{DirectorySource, HandlebarsEngine};
 use iron::prelude::Iron;
+use std::error::Error;
+use std::sync::Arc;
 
-use media_collection_crud::{chain, handlers, db};
+use media_collection_crud::{chain, db};
+
+fn template_engine() -> Arc<HandlebarsEngine> {
+	let views_ext = ".hbs";
+	let views_path = "./src/views";
+
+	let hbs = Handlebars::new();
+
+	let mut hbse = HandlebarsEngine::from(hbs);
+	hbse.add(Box::new(
+		DirectorySource::new(views_path, views_ext)
+	));
+
+	if let Err(r) = hbse.reload() {
+		panic!("{:?}", r.description());
+	}
+
+	let hbse_ref = Arc::new(hbse);
+	if cfg!(debug_assertions) {
+		println!("Templates are being watched.");
+		use handlebars_iron::Watchable;
+		hbse_ref.watch(views_path);
+	}
+
+	hbse_ref
+}
 
 fn main() {
 	env_logger::init();
@@ -14,7 +43,7 @@ fn main() {
 	let bind_addr = format!("localhost:{}", port);
 
 	let mut chain = chain::init();
-	let templating_engine = handlers::template_engine().clone();
+	let templating_engine = template_engine();
 	chain.link_after(templating_engine);
 
 	let _server_guard = Iron::new(chain)

src/views/index.hbs

@@ -1,4 +1,7 @@
+{{#*inline "page"}}
 <main>
     <h2>Index Page</h2>
     <p>Testing rendering of internal content.</p>
 </main>
+{{/inline}}
+{{~> (parent)~}}

src/views/layout/base.hbs

@@ -1,5 +1,5 @@
 {{> layout/top}}
     {{> header}}
-    {{~ page}}
+    {{~> page}}
     {{> footer}}
 {{> layout/bottom}}