Code hookup

$url_object = \Drupal::service('path.validator')->getUrlIfValid('admin/content'); $route_name = $url_object->getRouteName(); dpm($route_name);

While create REST resource in Drupal 8, ResourceResponse method used to return response. But it cache the response data. If you don't want to store response in cache, use this code $build = [ '#cache' => [ 'max-age' => 0, ], ]; return (new ResourceResponse($response, $response_code))->addCacheableDependency($build);

How to add join condition in views programmatically in Drupal 8? use $query->queueTable to implement joins. function hook_views_query_alterViewExecutable $views, QueryPluginBase $query) { $query->queueTable('node__field_accounts', "node_field_data", NULL, 'node__field_accounts'); $query->addWhere($where_last_key, 'node__field_accounts.field_accounts_target_id', $account_values['target_id'], 'IN'); } Method definition Sql::queueTable($table, $relationship = NULL, JoinPluginBase $join = NULL, $alias = NULL) To use INNER JOIN $configuration = [ 'type' => 'INNER', 'table' => 'user__field_region', 'field' => 'entity_id', 'left_table' => 'users_field_data', 'left_field' => 'uid', 'operator' => '=', ]; $join = Views::pluginManager('join') ->...

How to display raw sql query of a  views in Drupal 8? To see views SQL query, you can use hook_views_pre_execute(ViewExecutable $view) function hook_views_pre_execute(ViewExecutable $view) { print_r($view->query->query()->__toString()); die(); } Use __toString() with query to return raw SQL query.

Database connection can be injected in class object using dependency injection. We can also use service method \Drupal::database() This way of using database is suitable for XXX.module file but in class we can use dependency injection. Using dependency injection :- Drupal\Core\Database\Connection class for database connection. use Drupal\Core\Database\Connection; use Symfony\Component\DependencyInjection\ContainerInterface; class CustomClass { /** * The database connection to be used. * * @var \Drupal\Core\Database\Connection */ protected $database; /** * @param \Drupal\Core\Database\Connection $database * The database connection to be used. */ public function __construct(Connection $database) { $this->database = $database; } /** * {@inheritdoc} */ public static function create(ContainerInterface $container) { $container->get('database') } } $container->get('database') here database is the ...

You must create a new object inside the static method to access not-static methods inside that class: class Foo { public function fun1 () { echo 'non-static' ; } public static function fun2 () { echo ( new self )-> fun1 (); } } Reference:  https://stackoverflow.com/questions/41631623/how-to-call-non-static-method-from-static-method-of-same-class

To get settings of an Entity field in Drupal 8 Use this code: $entity_type='node'; $bundle='article'; $field_name='field_summary_image'; $bundle_fields = \Drupal::getContainer()->get('entity_field.manager')->getFieldDefinitions($entity_type, $bundle); $field_definition = $bundle_fields[$field_name]; $file_directory= $field_definition->getSetting('file_directory');