MiniJinja: a powerful template engine for Rust with minimal dependencies

MiniJinja is a powerful but minimal dependency template engine for Rust which is based on the syntax and behavior of the Jinja2 template engine for Python.

It's implemented on top of serde and only has it as a single required dependency. It supports a range of features from Jinja2 including inheritance, filters and more. The goal is that it should be possible to use some templates in Rust programs without the fear of pulling in complex dependencies for a small problem. Additionally it tries not to re-invent something but stay in line with prior art to leverage an already existing ecosystem of editor integrations.

$ cargo tree
minimal v0.1.0 (examples/minimal)
└── minijinja v0.26.0 (minijinja)
    └── serde v1.0.144

Goals:

• Well documented, compact API
• Minimal dependencies, reasonable compile times and decent runtime performance
• Stay close as possible to Jinja2
• Support for expression evaluation
• Support for all serde compatible types
• Well tested
• Support for dynamic runtime objects with methods and dynamic attributes
• Descriptive errors

Example Template

{% extends "layout.html" %}
{% block body %}
  <p>Hello {{ name }}!</p>
{% endblock %}

API

use minijinja::{Environment, context};

fn main() {
    let mut env = Environment::new();
    env.add_template("hello.txt", "Hello {{ name }}!").unwrap();
    let template = env.get_template("hello.txt").unwrap();
    println!("{}", template.render(context! { name => "World" }).unwrap());
}

Minimum Rust Version

MiniJinja's development version requires Rust 1.61 due to limitations with HRTBs in older Rust versions.

MiniJinja 0.20 supports Rust versions down to 1.45. It is possible to write code that is compatible with both 0.20 and newer versions of MiniJinja which should make it possible to defer the upgrade to later.

Related Crates

• minijinja-autoreload: provides
• minijinja-stack-ref: provides functionality to pass values from the stack

Sponsor

If you like the project and find it useful you can become a sponsor.

License and Links

• Documentation
• Examples
• Issue Tracker
• License: Apache-2.0