function field_field_storage_config_update

Implements hook_ENTITY_TYPE_update() for 'field_storage_config'.

Reset the field handler settings, when the storage target_type is changed on an entity reference field.

File

core/modules/field/field.module, line 361

Code

function field_field_storage_config_update(FieldStorageConfigInterface $field_storage) {
    if ($field_storage->isSyncing()) {
        // Don't change anything during a configuration sync.
        return;
    }
    // Act on all sub-types of the entity_reference field type.
    
    /** @var \Drupal\Core\Field\FieldTypePluginManager $field_type_manager */
    $field_type_manager = \Drupal::service('plugin.manager.field.field_type');
    $item_class = 'Drupal\\Core\\Field\\Plugin\\Field\\FieldType\\EntityReferenceItem';
    $class = $field_type_manager->getPluginClass($field_storage->getType());
    if ($class !== $item_class && !is_subclass_of($class, $item_class)) {
        return;
    }
    // If target_type changed, reset the handler in the fields using that storage.
    if ($field_storage->getSetting('target_type') !== $field_storage->original
        ->getSetting('target_type')) {
        foreach ($field_storage->getBundles() as $bundle) {
            $field = FieldConfig::loadByName($field_storage->getTargetEntityTypeId(), $bundle, $field_storage->getName());
            // Reset the handler settings. This triggers field_field_config_presave(),
            // which will take care of reassigning the handler to the correct
            // derivative for the new target_type.
            $field->setSetting('handler_settings', []);
            $field->save();
        }
    }
}