function hook_entity_base_field_info

Provides custom base field definitions for a content entity type.

Field (storage) definitions returned by this hook must run through the regular field storage life-cycle operations: they need to be properly installed, updated, and uninstalled. This would typically be done through the Entity Update API provided by the entity definition update manager.

Parameters

\Drupal\Core\Entity\EntityTypeInterface $entity_type: The entity type definition.

Return value

\Drupal\Core\Field\FieldDefinitionInterface[] An array of field definitions, keyed by field name.

See also

hook_entity_base_field_info_alter()

hook_entity_bundle_field_info()

hook_entity_bundle_field_info_alter()

\Drupal\Core\Field\FieldDefinitionInterface

\Drupal\Core\Entity\EntityFieldManagerInterface::getFieldDefinitions()

\Drupal\Core\Entity\EntityDefinitionUpdateManagerInterface

https://www.drupal.org/node/3034742

Related topics

File

core/lib/Drupal/Core/Entity/entity.api.php, line 1925

Hooks and documentation related to entities.

Code

function hook_entity_base_field_info(\Drupal\Core\Entity\EntityTypeInterface $entity_type) {
  if ($entity_type
    ->id() == 'node') {
    $fields = [];
    $fields['my_module_text'] = BaseFieldDefinition::create('string')
      ->setLabel(t('The text'))
      ->setDescription(t('A text property added by my_module.'))
      ->setComputed(TRUE)
      ->setClass('\\Drupal\\my_module\\EntityComputedText');
    return $fields;
  }
}