Of note is hibiscus, my Classy sub-theme theme name and the HOOK, "region". For this, I will initiate my theme hook function in my theme's. Time to fire up Devel Kint and see what we can learn by inspecting the region array. What I am after here is a common region template for any of the the three postscript regions that I mentioned earlier. Here is what I see when we do that:įrom the above, we see the theme hook name, region as well as a two template suggestions. To start off, I'll place a block in one of my postscript regions and then examine the placed block with Web Inspector. If a module is already enabled the enable command is skipped for that module and the script tries to enable. So essentially, we'll grab this theme hook and make a template suggestion for an array of these regions. The Drupal API function we will use for this is hook_theme_suggestions_HOOK_alter where "HOOK" is the name of the theme hook that we see in our Twig debug area. The regions are called postscript_one, postscript_two, and postscript_three. On all 4.0.0+ releases the following is written. Also important to read the release notes. The goal for this tutorial is to create a theme hook and subsequent template for a group of block regions in our site. 3 Answers Sorted by: 7 Since Devel 4 you have to add Kint youself: composer require drupal/devel kint-php/kint You can read through this epic issue to learn more: Unknown 'kint' function. I also refer to various tools that I use, you can read more about them in my article, Drupal 8 Development: 5 Things to Add to Your Theming Toolbox. In this post, I'll help you get started with creating Drupal 8 custom theme hook suggestions and templates. Sometimes, an out of the box template is not enough so you can create your own theme hook in that case.
An override is as simple as copying one of Classy's 100+ templates into your Classy based sub-theme. My preferred method for Drupal 8 theming is using Classy as my base theme, creating a sub-theme off of that and then overriding the parts that are necessary. This makes getting at and altering markup far more accessible than it was in Drupal 6 and 7. In Drupal 8, there's templates for just about anything and with Drupal 8's new theme hooks, you can really narrow in on crafting a custom template for your specific use case. So there's a lot to get excited about here. Drupal 8 takes theming to a whole new level it feels elegant, freeing, uniform, cohesive, and logical. In the intervening years, I've seen a lot of changes of how theming and front-end development is approached and have tried to keep up with the latest trends and adhere to best practices. I've been theming with Drupal since version 6 back in 2009.
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