/**
* {@inheritdoc}
*/
protected function defineOptions()
{
$options = parent::defineOptions();
// Force the style plugin to 'entity_reference_style' and the row plugin to
// 'fields'.
$options['style']['contains']['type'] = array('default' => 'entity_reference');
$options['defaults']['default']['style'] = FALSE;
$options['row']['contains']['type'] = array('default' => 'entity_reference');
$options['defaults']['default']['row'] = FALSE;
// Make sure the query is not cached.
$options['defaults']['default']['cache'] = FALSE;
// Set the display title to an empty string (not used in this display type).
$options['title']['default'] = '';
$options['defaults']['default']['title'] = FALSE;
return $options;
}
