askama

Askama implements a template rendering engine based on Jinja, and generates type-safe Rust code from your templates at compile time based on a user-defined struct to hold the template's context.

At some point, Askama got forked into Rinja (explained here) before getting merged back into Askama.

All feedback welcome! Feel free to file bugs, requests for documentation and any other feedback to the issue tracker.

You can find the documentation about our syntax, features, configuration in our book: askama.readthedocs.io.

Have a look at our Askama Playground, if you want to try out askama's code generation online.

Feature highlights

• Construct templates using a familiar, easy-to-use syntax
• Benefit from the safety provided by Rust's type system
• Template code is compiled into your crate for optimal performance
• Debugging features to assist you in template development
• Templates must be valid UTF-8 and produce UTF-8 when rendered
• Works on stable Rust

Supported in templates

• Template inheritance
• Loops, if/else statements and include support
• Macro support
• Variables (no mutability allowed)
• Some built-in filters, and the ability to use your own
• Whitespace suppressing with '-' markers
• Opt-out HTML escaping
• Syntax customization

How to get started

First, add the askama dependency to your crate's Cargo.toml:

cargo add askama

Now create a directory called templates in your crate root. In it, create a file called hello.html, containing the following:

Hello, {{ name }}!

In any Rust file inside your crate, add the following:

use askama::Template; // bring trait in scope

#[derive(Template)] // this will generate the code...
#[template(path = "hello.html")] // using the template in this path, relative
                                 // to the `templates` dir in the crate root
struct HelloTemplate<'a> { // the name of the struct can be anything
    name: &'a str, // the field name should match the variable name
                   // in your template
}

fn main() {
    let hello = HelloTemplate { name: "world" }; // instantiate your struct
    println!("{}", hello.render().unwrap()); // then render it.
}

You should now be able to compile and run this code.