public static function csrfInput()
    {
        return Html::hiddenInput(\Yii::$app->request->csrfParam, \Yii::$app->request->csrfToken);
    }
public static function csrfInput()
    {
        return Html::hiddenInput(\Yii::$app->request->csrfParam, \Yii::$app->request->csrfToken);
    }
public static function csrfInput ( ) { return Html :: hiddenInput ( \ Yii :: $ app -> request -> csrfParam , \ Yii :: $ app -> request -> csrfToken ) ; }
Csrf input for submitting form data
@return string
Csrf input for submitting form data