Move handlebars helper to its own file

src/handlebars_util.rs

@@ -0,0 +1,13 @@
+use rocket_contrib::templates::Engines;
+use handlebars::handlebars_helper;
+
+pub fn register_helpers(engines: &mut Engines) {
+    handlebars_helper!(pretty_datetime: |dt: str| {
+        let date = dt.trim_end_matches(|c| c != 'T').trim_end_matches('T');
+        let time = dt.trim_start_matches(|c| c != 'T').trim_start_matches('T')
+            .trim_end_matches(|c| c != ':').trim_end_matches(':');
+        format!("{} {}", date, time)
+    });
+
+    engines.handlebars.register_helper("pretty_datetime", Box::new(pretty_datetime));
+}

src/main.rs

@@ -2,12 +2,12 @@
 mod database;
 mod routes;
 mod status_json;
+mod handlebars_util;
 
 use std::{io, env};
 use dotenv::dotenv;
 use rocket_contrib::templates::Template;
 use rocket_contrib::serve::StaticFiles;
-use handlebars::handlebars_helper;
 
 fn main() -> io::Result<()> {
     dotenv().ok();
@@ -16,17 +16,8 @@ fn main() -> io::Result<()> {
 
     let sled = sled::open(db_path)?;
 
-    handlebars_helper!(pretty_datetime: |dt: str| {
-        let date = dt.trim_end_matches(|c| c != 'T').trim_end_matches('T');
-        let time = dt.trim_start_matches(|c| c != 'T').trim_start_matches('T')
-            .trim_end_matches(|c| c != ':').trim_end_matches(':');
-        format!("{} {}", date, time)
-    });
-
     let rocket = rocket::ignite()
-        .attach(Template::custom(|engines| {
+        .attach(Template::custom(|engines| handlebars_util::register_helpers(engines)))
-            engines.handlebars.register_helper("pretty_datetime", Box::new(pretty_datetime));
-        }))
         .manage(sled)
         .mount("/static", StaticFiles::from("static"))
         .mount(