Unified Twig Extensions

Share Pattern Lab's custom twigs functions, filters and tags with Drupal 8. Huzzah!

Getting Started

Simply add to Drupal and enable the Unified Twig Extensions module on the admin/modules page to get started.

Note on Paths

Note: currently looks for compatible extensions in your current active D8 theme path + either the 'pattern-lab/source/_twig-components' or 'source/_twig-components' folders. @TODO: allow users to customized / override this!

Included Examples

I'm including a couple example twig extensions to add to your existing Pattern Lab-enabled theme to get started:

1. example/_twig-components/functions/link.function.php --> example of having Drupal ignore a PL Twig extension given the link function already exists in Drupal.

2. example/_twig-components/tags/grid.tag.php and example/_twig-components/tags/cell.tag.php --> example of a custom Twig tag that abstracts away some of the markup involved in an ITCSS-based grid system.

   To test this out, try adding these two custom Twig tags to your theme's existing _twig-components folder and try adding the following HTML (to both PL's twig templates and/or a Drupal template):

{% grid 'o-grid--large' %}
  {% cell 'u-1/1 u-1/2@small u-2/3@medium' %}
    Grid cell
  {% endcell %}

  {% cell 'u-1/1 u-1/2@small u-1/3@medium' %}
    Grid cell
  {% endcell %}
{% endgrid %}

Everything should be working as expected if you don't encounter any errors and the following HTML gets output (rendered of course):

<div class="o-grid o-grid--large">
  <div class="o-grid__item u-1/1 u-1/2@small u-2/3@medium">
    Grid cell
  </div>

  <div class="o-grid__item u-1/1 u-1/2@small u-1/3@medium">
    Grid cell
  </div>
</div>