ManaPHP\Mvc\Model::getChangedFields PHP Метод

    public function getChangedFields()
    {
        $changed = [];
        foreach ($this->modelsMetadata->getAttributes($this) as $field) {
            if (!isset($this->_snapshot[$field]) || $this->{$field} !== $this->_snapshot[$field]) {
                $changed[] = $field;
            }
        }
        return $changed;
    }