/**
* {@inheritdoc}
*/
public function validate()
{
$errors = parent::validate();
// Verify that search fields are set up.
$style = $this->getOption('style');
if (!isset($style['options']['search_fields'])) {
$errors[] = $this->t('Display "@display" needs a selected search fields to work properly. See the settings for the Entity Reference list format.', array('@display' => $this->display['display_title']));
} else {
// Verify that the search fields used actually exist.
$fields = array_keys($this->handlers['field']);
foreach ($style['options']['search_fields'] as $field_alias => $enabled) {
if ($enabled && !in_array($field_alias, $fields)) {
$errors[] = $this->t('Display "@display" uses field %field as search field, but the field is no longer present. See the settings for the Entity Reference list format.', array('@display' => $this->display['display_title'], '%field' => $field_alias));
}
}
}
return $errors;
}
