drupal-module-development

name	drupal-module-development
description	Use when creating or extending Drupal 11 custom modules, including scaffolding, service architecture, and dependency injection best practices.

Drupal Module Development Skill

Purpose

Use this skill when creating or extending custom Drupal 11 modules with modern architecture and maintainable code.

When to apply

• Building a new custom module in web/modules/custom.
• Adding services, event subscribers, forms, or controllers.
• Refactoring procedural logic to service-based design.

Workflow

1. Scaffold the module structure (.info.yml, .services.yml, routing, permissions).
2. Register dependencies through service definitions and constructor injection.
3. Build controllers/forms/plugins using Drupal 11 APIs and strict typing.
4. Add config schema for any custom configuration.
5. Validate with Drush cache rebuild and config export.

Guardrails

• Avoid direct use of superglobals in business logic.
• Prefer dependency injection over static service locators.
• Keep schema, permissions, routes, and services documented and versioned.
• Do not modify Drupal core or contrib module code directly.

Quick command checklist

drush en <module_name> -y
drush cr
drush config:export -y

In a containerized environment, prefix with your runner (e.g. ddev drush … — see the ddev-tools plugin).