This repo is no longer maintained. We recommend you use the liquidjs package instead.

Liquid with Node.js

This is a port of the original Liquid template engine from Ruby to Node.js. It uses Promises to support non-blocking/asynchronous variables, filters, and blocks.

Features

Supports asynchronous variables, tags, functions and filters (helpers)
Supports whitespace control
Allows custom tags and filters to be added
Supports full liquid syntax
Based on original Ruby code
High test coverage

What does it look like?

<ul id="products">
  {% for product in products %}
    <li>
      <h2>{{ product.name }}</h2>
      Only {{ product.price | price }}

      {{ product.description | prettyprint | paragraph }}
    </li>
  {% endfor %}
</ul>

Installation

npm install liquid

Usage

Liquid supports a very simple API based around the Liquid.Engine class. For standard use you can just pass it the content of a file and call render with an object.

const Liquid = require('liquid')
const engine = new Liquid.Engine()

engine
  .parse('hi {{name}}')
  .then(template => template.render({ name: 'tobi' }))
  .then(result => console.log(result))

// or

engine
  .parseAndRender('hi {{name}}', { name: 'tobi' })
  .then(result => console.log(result))

Usage with Connect and Express

app.get((req, res, next) => {
  engine
    .parseAndRender('hi {{name}}', { name: 'tobi' })
    .nodeify((err, result) => {
      if (err) {
        res.end('ERROR: ' + err)
      } else {
        res.end(result)
      }
    })
})

Registering new filters

engine.registerFilters({
  myFilter: input => {
    return String(input).toUpperCase()
  }
})

Registering new tags

Take a look at the existing tags to see how to implement them.

class MyTag extends Liquid.Tag {
  render () {
    return 'hello world'
  }
}

engine.registerTag('MyTag', MyTag)

Tests

npm test

Similar libraries

harttle/liquidjs (liquidjs on npm) is another actively maintained Liquid parser and render for Node.js
darthapo's Liquid.js is liquid ported to JavaScript to be run within the browser. It doesn't handle asynchrony.
tchype's Liquid.js is liquid-node wrapped to run in a browser.

License

MIT

Contributors ✨

Thanks goes to these wonderful people (emoji key):

_{Marcel Jackwerth} 💻 📖	_{Tony C. Heupel} 💻	_{Chen Yangjian} 💻	_{Henri Bergius} 💻	_{Sam Tiffin} 💻	_{Kris Ciccarello} 💻	_{Cory Reed} 💻 💡 📖
_{Sebastian Seilund} 💻	_{Rob Loach} 💻	_{Sarah Schneider} 💻	_{Zeke Sikelianos} 💻 📖 🚧