Twig.js is a pure JavaScript implementation of the Twig PHP templating language (https://twig.symfony.com/)
The goal is to provide a library that is compatible with both browsers and server side containers such as node.js.
Twig.js is currently a work in progress and supports a limited subset of the Twig templating language (with more coming).
You can get Twig.js by any of the following methods:
Clone the repository
git clone git://github.com/justjohn/twig.js.git
The files twig.js and twig.min.js may not be up-to-date (they will be rebuilt when releasing a new version). Run make (or make -B to force building) to create these files.
See the implementation details wiki page for a list of supported filters/functions/tags/tests.
Twig.js is available as a Node package which you can install from npm
If you don't want to use Express, you can render a template with the following method:
import Twig from 'twig';
Twig.renderFile('./path/to/someFile.twig', {foo:'bar'}, (err, html) => {
html; // compiled string
});
Twig.js is compatible with Express 2 and 3 and can be setup with the following code:
Express 3
var express = require('express'),
app = express();
app.configure(function(){
app.set('views', __dirname + '/views');
app.set('view engine', 'twig');
// This section is optional and can be used to configure twig.
app.set('twig options', {
strict_variables: false
});
});
app.get('/', function(req, res){
res.render('index', {
message : "Hello World"
});
});
app.listen(9999);
Message of the moment: <b>{{ message }}</b> Using a custom file extension
You can use a custom file extension by registering twig as the view engine for the extension you want. For example, to use the html extension, you would use:
twig = require('twig');
// ... in app.configure
app.set('view engine', 'html');
app.engine('html', twig.__express);
See the Express 2 page for compatibility with Express 2.
From the browser, Twig.js can be used with inline templates or templates loaded from AJAX.
var template = Twig.twig({
id: "list", // id is optional, but useful for referencing the template later
data: "{% for value in list %}{{ value }}, {% endfor %}"
});
var output = template.render({
list: ["one", "two", "three"]
});
// output = "one, two, three, "
If an id is provided when you create a template, you can reference the template anywhere else in your application by using the ref parameter:
// Elsewhere in your application
var output = Twig.twig({ ref: "list" }).render({
list: ["a", "b", "c"]
});
// output = "a, b, c, "
Templates can also be loaded via ajax by setting the href parameter in the twig() options.
templates/posts.twig
{% for post in posts %}
<article>
<header>
<h1>{{ post.title }}</h1>
</header>
<p>{{ post.body }}</p>
</article>
{% endfor %}
app.js
var template = twig({
id: "posts",
href: "templates/posts.twig",
// for this example we'll block until the template is loaded
async: false
// The default is to load asynchronously, and call the load function
// when the template is loaded.
// load: function(template) { }
});
Once you've loaded templates, you can access them via their id and render them when you have data.
posts = { ... }; // data from somewhere like an AJAX callback
// render the template
var postsHTML = twig({ ref: "posts" }).render(posts);
// Display the rendered template
document.getElementById("posts").innerHTML = postsHTML;
var template = Twig.twig({
data: 'your-template',
namespaces: { 'my-project': 'path/to/views/folder/' }
}).render();
When referencing another template, instead of using the relative path you can use the namespaces that were previously defined.
Ex:
{# your-template.twig #}
{% extends "my-project::template.twig" %}
The "my-project::" will now point to "path/to/views/folder/". It works with the @ sign too:
{% include '@my-project/template.twig' %}
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