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    1.2.12 • Public • Published


    Twig template enginge adapter for Fractal.

    NPM Version

    Requires Fractal v1.1.0 or greater.

    To install this adapter run this command:

    npm install @frctl/twig

    then open your fractal.js file and add following lines:

     * Require the Twig adapter
    const twigAdapter = require('@frctl/twig')();
    fractal.components.set('ext', '.twig');

    Using Twig for docs

    To use Twig for docs, set the docs engine to @frctl/twig:;

    Extending with a custom config

     * Require the Twig adapter
    const twigAdapter = require('@frctl/twig')({
        // if pristine is set to true, bundled filters, functions, tests
        // and tags are not registered.
        // default is false
        pristine: false,
        // if importContext is set to true, all include calls are passed
        // the component's context
        // default is false
        importContext: false,
        // use custom handle prefix
        // this will change your includes to {% include '%button' %}
        // default is '@'
        handlePrefix: '%',
        // set a base path for twigjs
        // Setting base to '/' will make sure all resolved render paths
        // start at the defined components dir, instead of being relative.
        // default is null
        base: '/',
        // should missing variable/keys emit an error message
        // If false, they default to null.
        // default is false
        strict_variables: true,
        // define Twig namespaces, see
        // this may break some fractal functionality, like including components via their handles and the render tag
        namespaces: {
            'Components': './components'
        // use twig.js default template loader
        // this will allow including templates via relative paths, like twig.js or PHP Twig does by default
        // changing this will break including components via their fractal handles
        // changing this will break the custom render tag
        // default is 'fractal'
        method: 'fs',
        // register custom filters
        filters: {
            // usage: {{ label|capitalize }}
            capitalize: function(str) {
                if (!str) return '';
                return str.charAt(0).toUpperCase() + str.slice(1);
        // register custom functions
        functions: {
            // usage: {{ capitalize(label) }}
            capitalize: function(str) {
                if (!str) return '';
                return str.charAt(0).toUpperCase() + str.slice(1);
        // register custom tests
        tests: {
            // usage: {% if label is equalToNull %}
            equalToNull: function(param) {
                return param === null;
        // register custom tags
        tags: {
            flag: function(Twig) {
                // usage: {% flag "ajax" %}
                // all credit to
                return {
                    // unique name for tag type
                    type: "flag",
                    // regex match for tag (flag white-space anything)
                    regex: /^flag\s+(.+)$/,
                    // this is a standalone tag and doesn't require a following tag
                    next: [ ],
                    open: true,
                    // runs on matched tokens when the template is loaded. (once per template)
                    compile: function (token) {
                        var expression = token.match[1];
                        // Compile the expression. (turns the string into tokens)
                        token.stack = Twig.expression.compile.apply(this, [{
                            type:  Twig.expression.type.expression,
                            value: expression
                        delete token.match;
                        return token;
                    // Runs when the template is rendered
                    parse: function (token, context, chain) {
                        // parse the tokens into a value with the render context
                        var name = Twig.expression.parse.apply(this, [token.stack, context]),
                            output = '';
                        flags[name] = true;
                        return {
                            chain: false,
                            output: output

    Using external plugins

    An example to use twig-js-markdown:

    const twigMarkdown = require('twig-markdown');
    const instance = fractal.components.engine(twigAdapter);
    // instance.twig refers to the twig.js instance

    Included filters


    Takes a root-relative path and re-writes it if required to make it work in static HTML exports.

    It is strongly recommended to use this filter whenever you need to link to any static assets from your templates.

    The path argument should begin with a slash and be relative to the web root. During a static HTML export this path will then be re-written to be relative to the current page.


    {{ '/css/my-stylesheet.css'|path }}

    Included tags


    The render tag renders a component (referenced by its handle) using the context data provided to it. If no data is provided, it will use the context data defined within the component's configuration file, if it has one.


    {% render "@component" with {some: 'values'} %}




    npm i @frctl/twig

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