/**
* Returns the base field definitions for entity keys.
*
* @param \Drupal\Core\Entity\ContentEntityTypeInterface $entity_type
* The entity type.
*
* @return \Drupal\Core\Field\BaseFieldDefinition[]
*/
protected static function entityKeysBaseFieldDefinitions(ContentEntityTypeInterface $entity_type)
{
$fields = [];
if ($entity_type->hasKey('id')) {
$fields[$entity_type->getKey('id')] = BaseFieldDefinition::create('integer')->setLabel(t('ID'))->setReadOnly(TRUE)->setSetting('unsigned', TRUE);
}
if ($entity_type->hasKey('uuid')) {
$fields[$entity_type->getKey('uuid')] = BaseFieldDefinition::create('uuid')->setLabel(t('UUID'))->setReadOnly(TRUE);
}
if ($entity_type->hasKey('revision')) {
$fields[$entity_type->getKey('revision')] = BaseFieldDefinition::create('integer')->setLabel(t('Revision ID'))->setReadOnly(TRUE)->setSetting('unsigned', TRUE);
}
if ($entity_type->hasKey('langcode')) {
$fields[$entity_type->getKey('langcode')] = BaseFieldDefinition::create('language')->setLabel(t('Language'))->setTranslatable(TRUE)->setRevisionable(TRUE)->setDisplayOptions('view', ['type' => 'hidden'])->setDisplayOptions('form', ['type' => 'language_select', 'weight' => 2]);
}
$bundle_entity_type_id = $entity_type->getBundleEntityType();
if ($bundle_entity_type_id && $entity_type->hasKey('bundle')) {
$fields[$entity_type->getKey('bundle')] = BaseFieldDefinition::create('entity_reference')->setLabel(t('Type'))->setSetting('target_type', $bundle_entity_type_id)->setReadOnly(TRUE);
}
return $fields;
}
/**
* Initializes common information for a data table.
*
* @return array
* A partial schema array for the data table.
*/
protected function initializeDataTable()
{
$entity_type_id = $this->entityType->id();
$id_key = $this->entityType->getKey('id');
$schema = array('description' => "The data table for {$entity_type_id} entities.", 'primary key' => array($id_key, 'langcode'), 'indexes' => array(), 'foreign keys' => array($entity_type_id => array('table' => $this->storage->getBaseTable(), 'columns' => array($id_key => $id_key))));
if ($this->entityType->hasKey('revision')) {
$key = $this->entityType->getKey('revision');
$schema['indexes'][$this->getEntityIndexName($key)] = array($key);
}
$this->addTableDefaults($schema);
return $schema;
}
