rocket_contrib::handlebar_templates does not register partials w/ Handlebars

[kestred]

Out of the box, Rocket does not correctly handle handlebars partials.

See an example handlebars template:

{{> common/header }}
<main> ... </main>
{{> common/footer }}

I currently have a work-around where I write a little hacky-boilerplate before I launch rocket:

fn main() {
    let empty = HashMap::<String, String>::with_capacity(0);
    Template::render("common/header", &empty);
    Template::render("common/footer", &empty);

    rocket::ignite().mount("/", routes![...]).launch();
}

This works by re-purposing the render() function to register the partials in the HANDLEBARS static variable.

If you can describe your ideal way of fixing this issue, I'd be happy to implement a fix and open a pull request.

[SergioBenitez]

What is the layout/structure of your templates directory?

[kestred]

It is structured like so:

templates/
|__ common/
|   |__ header.html.hbs
|   \__ footer.html.hbs
|
|__ index.html.hbs
\__ etc.html.hbs

This isn't following any particular pattern, it is just what is convenient at the time;
Is there a specific place that rocket.rs recognizes for partials?

[SergioBenitez]

Indeed. The Handlebars template engine plugin for Rocket is lazy about loading templates. But this clearly indicates that it must be eager. The proper approach is to scan for all of the templates at initialization and register them with handlebars. This is what the Tera engine does, for instance.