How to Add Sidebars to a Radix Subtheme in Drupal

Staff Reporter

James Oakley details the process of adding sidebar regions to a Radix subtheme in Drupal, addressing a common limitation in the base theme. Radix subthemes do not include sidebar regions by default, requiring developers to manually declare them in the `.info.yml` file, create a custom Twig component for rendering, and modify the `page-content` and `page` components to integrate sidebars within a Bootstrap grid layout. The guide covers setting up a subtheme, generating necessary CSS, customizing templates, and ensuring responsive design using Bootstrap classes. James also provides instructions on optimizing sidebar widths dynamically to maintain proper alignment when only one sidebar is used. The tutorial concludes with steps for enabling sidebars on the homepage and applying CSS for styling.

Source Reference

Title

Adding Sidebars to the Radix base theme for Drupal

Byline

James Oakley

Date of Publication

19 March 2025

Theme

Drupal

Drupal Theme

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