Install Drupal:
\ncomposer create-project drupal/recommended-project drupal-website\ncd drupal-website```Install Drupal in a Subdirectory:
\ncomposer create-project drupal/recommended-project drupal-website\nmv drupal-website public_html``` Initialize the Site:
\n drush site:install standard --db-url=mysql://user:password@localhost/databasename --site-name=\"Drupal Website\"Common Drush Commands:
\ndrush cr # Clear cache\ndrush uli # Get login URL\ndrush status # Drupal site status\ndrush pm:enable # Enable a module\ndrush pm:uninstall # Uninstall a module\ndrush config:export -y # Export configuration\ndrush config:import -y # Import configurationInstall a Module via Composer:
\ncomposer require drupal/devel\ndrush pm:enable develInstall a Custom Module:
\nmodules/custom/module_name..info.yml file, hook implementations, and other components.Install a Custom Theme:
\nthemes/custom/theme_name..info.yml file, templates, and assets.Export Configuration:
\ndrush config:export
Import Configuration:
\ndrush config:import
Reset to Default Configuration:
\ndrush config:delete mymodule.settings
Run PHP code via Drush:
\ndrush php-eval "dump(\\Drupal::Config('system.site')->get('name'));"
Query with EntityQuery:
\n$query = \\Drupal::entityQuery('node')\n ->condition('type', 'article')\n ->accessCheck(TRUE)\n ->condition('status', 1);\n$nids = $query->execute();Load an Entity:
\n$node = \\Drupal::entityTypeManager()\n ->getStorage('node')\n ->load($node_id);Load Multiple Entities:
\n$entity_manager = \\Drupal::entityTypeManager()\n ->getStorage('node');\n \n$nids = $entity_manager->getQuery()\n ->condition('type', 'article')\n ->condition('status', 1)\n ->accessCheck(TRUE)\n ->execute();\n\n$nodes = $entity_manager->loadMultiple($nids);Create an Entity:
\n$node = \\Drupal\\node\\Entity\\Node::create([\n 'type' => 'article',\n 'title' => 'My New Article',\n]);\n$node->save();Implement a Hook:
\nfunction mymodule_node_view(array &$build, \\Drupal\\node\\NodeInterface $node) {\n // Modify the node display here.\n}Define a Service:
\nAdd to mymodule.services.yml:
services:\n mymodule.my_service:\n class: Drupal\\mymodule\\MyService\n arguments: []src/MyService.php with the defined class.Define a Route:
\nIn mymodule.routing.yml:
mymodule.custom_route:\n path: '/custom-route'\n defaults:\n _controller: '\\Drupal\\mymodule\\Controller\\CustomController::content'\n requirements:\n _permission: 'access content'Create a Controller:
\nIn src/Controller/CustomController.php:
namespace Drupal\\mymodule\\Controller;\nuse Drupal\\Core\\Controller\\ControllerBase;\n\nclass CustomController extends ControllerBase {\n public function content() {\n return [\n '#markup' => 'Hello, Drupal!',\n ];\n }\n}Check User Permissions:
\n$current_user = \\Drupal::currentUser();\nif ($current_user->hasPermission('administer site configuration')) {\n // The user has permission to administer the site.\n}Create a User:
\n// Create a new user\n$user = \\Drupal\\user\\Entity\\User::create([\n 'name' => 'username',\n 'mail' => 'user@example.com',\n]);\n$user->save();Debugging Tools:
\ndump($foo) function to debug code and remember to add die() after the dump to stop PHP execution.drush ws to monitor logs and errors.For Better Performance:
\nDrupal\\Core\\Database\\Connection service instead of writing raw SQL.Security Best Practices:
\n