Drupal 8 : disable cache and enable twig debug

Geplaatst op 25 januari 2016 door Gerdt Brouwer

1 reactie

For theming your site it is best practice to disable the Drupal 8 cache since you are forced to clear all the caches on every change you make. The cache for Drupal is default turned on.

Disable cache

To do so, first of all copy the file example.settings.local.php from the folder /sites into the folder /sites/default and rename it to settings.local.php
Search for this line :
# $settings['cache']['bins']['render'] = 'cache.backend.null';
and remove the comment setting #
This will turn off the caching so don’t copy this file to productionsites !

Now, depending on which modules you use, you can get an error on reloading your site. In that case use yoursite.com/rebuild.php
Also, currently Display Suite 8.x.2.3 is giving an error (https://www.drupal.org/node/2655046)

Enable Twig debug

To make Twig easier to debug use the developer.services.yml (do not change the default.services.yml, it won’t work) and place the following code in the file :
parameters:
  twig.config:
    debug: true
    auto-reload: true
    cache: false

Put the file back to the server on /sites

Reload the page and check the source code. In the source code you can now see extra comments telling you which templates are used.
Also you find the suggestions for new templates like in theme key

<\!-- THEME HOOK: 'page' -->
<\!-- FILE NAME SUGGESTIONS: * page--front.html.twig * page--.html.twig x page.html.twig -->
<\!-- BEGIN OUTPUT from 'core/themes/stable/templates/layout/page.html.twig' -->

For more info on debugging twig look at https://drupalize.me/blog/201405/lets-debug-twig-drupal-8

Gepost in categorie: Drupal, TechTalk

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