4 releases

0.2.1	Jan 19, 2024
0.2.0	Jan 19, 2024
0.1.1	Jan 15, 2024
0.1.0	Jan 14, 2024

#2159 in Web programming

38 downloads per month

MIT license

110KB
2.5K SLoC

Reluax

reluax lets you easily create dynamic websites in a custom dialect of Lua, inspired by JSX. The service has been written in Rust, and uses luajit as its Lua runtime for performance and ease of integration of other libraries.

Requirements

luajit

Installation

This project is available through GitHub releases as a prebuild binary, or from crates.io through cargo install reluax, if you have the Rust toolchain installed. Alternatively, it is packaged as a Nix flake: if you have Nix installed, you can nix run github:Duckonaut/reluax.

Usage

Commands:
  serve  Serve a directory of LuaX files in production mode
  build  Build a directory of LuaX files
  dev    Serve a directory of LuaX files in development mode
  new    Create a new project
  init   Initialize a new project in the current directory
  help   Print this message or the help of the given subcommand(s)

Options:
  -h, --help  Print help

Examples:
  reluax serve
  reluax serve --port 4000
  reluax dev -P public/ -C luax/

To create an example project, run reluax new my-first-project.

Inspiration

The project was heavily inspired by Ben Visness' blog post, I made JSX for Lua (because I hate static sites), which I highly recommend reading.

API

A Reluax project is very simple. Reluax expects to run a directory of files, with the entry point being reluax.luax or reluax.lua. This module needs to return a table containing the member function route, and optionally a project name under the key name. For code examples, check the examples directory.

The route function will be called with the path and, optionally, method and body of a request, and can return a variety of responses, by returning two values: the status code, and the response body.

The response body will usually be a table, and by default will be treated as a HTML page (see example/basic/). It can be optionally wrapped using the functions reluax.html or reluax.json, the first of which will make sure the HTML is returned as is, without a <!DOCTYPE html> tag, and the second returning the table as a JSON object.

With this you can build a rather powerful backend, handling templating, routing, and anything else through LuaX code.

The reluax global table contains several utility functions, described below:

reluax.json: wrap the table to be interpreted as a JSON response,
reluax.html_page: wrap the table to be interpreted as a full HTML page (default behavior),
reluax.html: wrap the table to be interpreted as a HTML excerpt (for e.g. use with htmx),
reluax.path_matches: check if a path string matches the template,
reluax.path_extract: extract named path parameters from the path.

Dependencies

~14–25MB
~389K SLoC