Configuring your Local Drupal 8 Development Environment

I have struggled with properly optimizing my local environment in terms of enabling debugging and disabling cache for a while. There isn’t that many steps you need to cover in order to have a proper working development environment. After reviewing Day 10 I completed setting up my environment the correct way and have outlined this in the following sections.

Step 1 Enable settings.local.php

  • Copy and Rename /sites/settings.example.local.php -> /sites/default/settings.local.php
  • Uncomment the following lines in your settings.php file:
[php]# if (file_exists(__DIR__ . ‘/settings.local.php’)) {
# include __DIR__ . ‘/settings.local.php’;
# }[/php]

Step 2 Disable Cache Services

  • In your sites/default/settings.local.php file, uncomment the following:
[php]# $settings[‘cache’][‘bins’][‘render’] = ‘cache.backend.null’;[/php]
  • Rebuild your site configuration by visiting yoursite.local/rebuild.php

Step 3 Disable Twig Cache and Enable Debugging

  • Add the following lines to your /sites/development-services.yml (Refer to /sites/default/default-services.yml for all options)
debug: true
auto_reload: true
cache: false[/php]
  • Clear Cache and then verify Twig debugging has been enabled by refreshing your Drupal 8 homepage. Review your source code and you should see something similar to:
[php]<!– THEME DEBUG –>
<!– THEME HOOK: ‘html’ –>
* html–front.html.twig
* html–.html.twig
x html.html.twig

Twig debugging gives a lot of helpful information scattered throughout your source code in the form of comments.

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