Yii2 MultilingualBehavior throws getPrimaryKey error - yii2

Question

I want to save multilingual record in my table but some error occurs - Call to a member function getPrimaryKey() on string. I am using multilingual behavior
and it is not for first time. Made two tables system_information and system_informationLang. This is my model:
<?php
namespace app\models;
use backend\models\CActiveRecord;
use Yii;
use omgdef\multilingual\MultilingualBehavior;
use omgdef\multilingual\MultilingualQuery;
/**
* This is the model class for table "system_information".
*
* #property int $id
* #property int $city_id
*
* #property SystemInformationlang[] $systemInformationlangs
*/
class SystemInformation extends CActiveRecord
{
public static function find()
{
return new MultilingualQuery(get_called_class());
}
public function behaviors()
{
$allLanguages = [];
foreach (Yii::$app->params['languages'] as $title => $language) {
$allLanguages[$title] = $language;
}
return [
'ml' => [
'class' => MultilingualBehavior::className(),
'languages' => $allLanguages,
//'languageField' => 'language',
//'localizedPrefix' => '',
//'requireTranslations' => false',
//'dynamicLangClass' => true',
//'langClassName' => PostLang::className(), // or namespace/for/a/class/PostLang
'defaultLanguage' => Yii::$app->params['languageDefault'],
'langForeignKey' => 'system_id',
'tableName' => "{{%system_informationlang}}",
'attributes' => [
'name',
'email',
'phone',
'address',
'facebook',
'instagram',
'google',
'linkin',
'fax',
'owner',
'latitude',
'longitude'
]
],
];
}
/**
* #inheritdoc
*/
public static function tableName()
{
return 'system_information';
}
/**
* #inheritdoc
*/
public function rules()
{
$string_255_lang = $this->multilingualFields([
'name',
'email',
'phone',
'address',
'facebook',
'instagram',
'google',
'linkin',
'fax',
'owner',
'latitude',
'longitude'
]);
$string_255 = [
'name',
'email',
'phone',
'address',
'facebook',
'instagram',
'google',
'linkin',
'fax',
'owner',
'latitude',
'longitude'
];
$require = ['name', 'phone', 'email', 'owner', 'address'];
$email_lang = $this->multilingualFields(['email']);
$email = ['email'];
return [
[$require, 'required'],
[$string_255, 'string', 'max' => 255],
[$string_255_lang, 'string', 'max' => 255],
[['city_id'], 'integer'],
[$email_lang, 'email'],
['email', 'email'],
];
}
/**
* #inheritdoc
*/
public function attributeLabels()
{
return [
'id' => Yii::t('app', 'ID'),
'city_id' => Yii::t('app', 'City ID'),
];
}
}
This is custom function for language fields creating :
protected function multilingualFields($fields){
$output = [];
foreach ($fields as $field){
foreach (Yii::$app->params['languages'] as $language) {
if(Yii::$app->params['languageDefault'] != $language){
$output[] = "{$field}_{$language}";
}
}
}
return $output;
}
And finally my controller:
public function actionCreate()
{
$model = new SystemInformation();
if ($model->load(Yii::$app->request->post())) {
$model->multilingualLoad($model, [
'name',
'email',
'phone',
'address',
'facebook',
'instagram',
'google',
'linkin',
'fax',
'owner',
'latitude',
'longitude'
]);
var_dump($model->save());
var_dump($model->getErrors());die;
if($model->save()){
return $this->redirect(['view', 'id' => $model->id]);
}else{
Yii::$app->session->setFlash('error', Yii::t('app', 'Something went wrong. Please, try again later!'));
return $this->render('create', [
'model' => $model,
]);
}
}
return $this->render('create', [
'model' => $model,
]);
}
multilingualLoad is also a custom function for filling the lingual fields:
public function multilingualLoad($model, $props = []){
$model_name = explode('\\', get_class($model));
$model_name = end($model_name);
foreach (Yii::$app->params['languages'] as $language){
if(Yii::$app->params['languageDefault'] != $language){
foreach ($props as $property){
$prop_lang = "{$property}_{$language}";
$model->$prop_lang = Yii::$app->request->post($model_name)["{$property}_{$language}"];
}
}
}
}
I got a picture of the Yii2 error. I guess it is searching for the lang table but somehow $owner gets value of a string.
Thank you in advance!