public function getSelected()
{
$model = $this->getForm()->getInstance();
$value = $this->getValue();
if (!$value && $model->pk) {
$data = CustomRelation::objects()->filter(['owner_pk' => $model->pk, 'owner_class' => $model->className(), 'field' => $this->field, 'name' => $this->getName()])->order(['position'])->valuesList(['related_class', 'related_pk']);
$value = [];
foreach ($data as $item) {
$value[] = $item['related_class'] . ':' . $item['related_pk'];
}
} elseif ($value) {
$value = Json::decode($value);
}
return $value ? $value : [];
}
protected function readMigration($filename)
{
$json = file_get_contents($filename);
return Json::decode($json);
}
private function decode($value)
{
$this->value = is_string($value) ? Json::decode($value) : $value;
return $this->value;
}
