public function actionAdd()
{
$comments = new comments();
$id_post = yii::$app->request->post('id');
$comments->attributes = yii::$app->request->post('comments');
$comments->author = is_null(yii::$app->user->id) ? 0 : yii::$app->user->id;
$comments->Add($id_post);
if (yii::$app->request->isAjax) {
$returnMsg['success'] = 'true';
return json_encode($returnMsg);
} else {
return $this->redirect($_SERVER['HTTP_REFERER']);
}
}