/**
* @inheritdoc
*/
public function init()
{
if (is_callable($this->query)) {
$this->query = call_user_func($this->query, $this->model);
}
if ($this->query instanceof ActiveQueryInterface) {
if (!$this->labelAttribute) {
throw new InvalidConfigException('Parameter "labelAttribute" is required');
}
$this->items = $this->query->all();
foreach ($this->items as $i => $model) {
$this->items[$i] = AdminHelper::resolveAttribute($this->labelAttribute, $model);
}
}
if ($this->allowEmpty) {
$this->items = ArrayHelper::merge([null => Yii::t('yii', '(not set)')], $this->items);
}
parent::init();
}
