Making a custom theme will offer your Drupal website a individual appearance and feel. We will walk you through the process of creating your own Drupal theme step-by-step in this tutorial. This implies that a custom design could be created for you.
Step 1: Setting Up a Drupal Environment
Before you can start developing your theme, make sure that you have installed Drupal on your server or local machine. You should also consider creating a fresh drupal project or using the one you already have as your development environment.
Step 2: Create a New Theme Directory
In your Drupal installation, go to themes directory and create a new folder for your theme. Use a name that represents your project, and can be easily identified with.
Step 3: Create the theme’s fundamental theme files in its folder.
mytheme.info.yml: In this YAML file are details about your theme.
mytheme.theme: This PHP file contains functions that related to only this theme.
mytheme.breakpoints.yml (optional): You can use this to set breakpoints that will enable your site be responsive on different devices.
mytheme.libraries.yml (optional): It is the line used to declare external libraries.
Step 4: Edit the .info.yml File
The mytheme.info.yml file should be opened and need you to provide important information like name, type, description, core version, base theme (if any), and regions. This will include defining the regions where various blocks are to appear in your theme.
name: 'My Custom Theme'
type: theme
description: 'A custom Drupal theme.'
core_version_requirement: ^8 || ^9
base theme: false
regions:
header: 'Header'
content: 'Content'
footer: 'Footer'
Step 5: Define CSS and JavaScript
Specify CSS and JavaScript files in the mytheme.libraries.yml file. For example:
global-styling:
version: 1.x
css:
theme:
css/style.css: {}
Place your CSS files in the css folder within your theme directory.
Step 6: Create Templates
HTML’s structure can be altered by generating template files for distinct elements. To override the node template, for instance, create a node.html.twig file in your theme folder.
Step 7: Modify Theme Settings
Implement theme-specific functions in your mytheme.theme file to control the appearance and behavior of your theme. For example:
function mytheme_preprocess_page(&$variables) {
// Add custom variables or logic here.
}
Step 8: Clear the Cache
After making changes, clear the Drupal cache to see updates:
drush cr
Alternatively, clear the cache through the Drupal admin interface.
Step 9: Enable Your Theme
Navigate to the Drupal admin interface, go to “Appearance,” and enable your custom theme.
Step 10: Customize and Iterate
Continue refining your theme by modifying templates, styles, and scripts. Regularly test your changes to ensure they align with your vision for the website. Make a custom Drupal theme for yourself by following these steps.
Please contact us at manish@bay20.com or call us at +91-8800519180 for any support related to Drupal. You can also visit the Drupal development page to check the services we offer.
