User Single Directory Components in Drupal Core

Drupal core does not include a specific concept called “Single Directory Components.” Drupal is primarily based on a modular architecture, and its core includes various types of components like modules, themes, and libraries. Modules in Drupal are self-contained packages that provide specific functionality to the site. They can define various components such as blocks, forms, hooks, and entities, which can be organized within the module’s directory structure. Themes, on the other hand, handle the presentation layer of a Drupal site, including layout, styling, and templates.

While Drupal core itself doesn’t enforce or provide specific guidelines for implementing Single Directory Components, it is possible to adopt a component-based approach using external tools and methodologies. Developers can structure their custom modules or themes to follow a component-based architecture and organize components in a single directory or subdirectories within their project.

Single Directory Components (SDC) is not a concept native to Drupal core, but it can be implemented as part of a custom development approach in Drupal. When adopting a Single Directory Components architecture in Drupal.

Directory Structure

Decide on the directory structure for your Single Directory Components. You can organize components based on their functionality, such as grouping related components together. For example, you might have directories for forms, cards, navigation, etc. Alternatively, you can use a flat structure and organize components directly in a single directory.

Component Naming Convention

Establish a naming convention for your components to ensure consistency and ease of use. Use descriptive and meaningful names that reflect the component’s purpose and functionality. Consider using a naming convention that clearly identifies the type of component, such as “MyComponentCard” or “MyComponentForm.”

Component Dependencies

Determine how components will handle their dependencies. If a component relies on specific CSS, JavaScript, or other dependencies, decide whether these dependencies should be loaded separately for each component or if they should be included globally for all components.


Consider the reusability of your components. Determine if components are meant to be reusable across different sections of your Drupal site or if they are specific to a particular context. Design components in a way that allows for flexibility and reusability wherever possible.

Component Communication

Decide on the approach for component communication. Determine how components will interact with each other, pass data, or trigger actions. You can use Drupal’s built-in APIs like hooks or event dispatching, or adopt a library like Vue.js or React that provides component communication mechanisms.

Theming and Styling

Determine how the theming and styling of components will be handled. Decide if components will have their own specific CSS or if they will inherit styles from a global stylesheet. Consider using CSS methodologies like BEM (Block, Element, Modifier) to maintain consistency and modularity in styling.

Integration with Drupal

Plan how your Single Directory Components will integrate with Drupal’s rendering system. Decide whether components will be rendered using Twig templates, theme functions, or a combination of both. Consider how components will handle dynamic data, access to Drupal’s APIs, and compatibility with Drupal’s theming layer.

Development Workflow

Establish a development workflow for creating, managing, and deploying Single Directory Components. Determine how components will be versioned, tested, and deployed to your Drupal environment. Consider utilizing tools like version control systems, build systems, and continuous integration (CI) pipelines to streamline development processes.

Remember that the implementation of Single Directory Components in Drupal requires custom development and may vary depending on your specific project requirements and preferences. It’s always recommended to follow Drupal’s coding standards, consult the official Drupal documentation, and leverage the expertise of the Drupal community when making architectural decisions.

For the most up-to-date information and best practices on building components in Drupal, it is recommended to refer to the official Drupal documentation, community forums, or resources dedicated to component-based development in Drupal.