Twig Debug

Purpose

During Twig development, we need to enable Twig debugging to see what are the template suggestions and which files to override.

Outline

• Enable local settings
• Use development service yml file
• Override Twig parameters

Resources

• Debugging compiled Twig templates

Guide

1. Copy sites/example.settings.local.php to sites/default/settings.local.php
2. Edit sites/default/settings.local.php line 92 to change DRUPAL_ROOT . '/sites/development.services.yml to __DIR__ . '/../development.services.yml
3. Uncomment the files that include the settings.local.php in settings.php php    if (file_exists(__DIR__ . '/settings.local.php')) {  include __DIR__ . '/settings.local.php';    }
4. Edit sites/development.service.yml to override Twig parameters. Add the following lines with spaces to the end of the file. yml    parameters:  twig.config:    debug: true