Jarves\Admin\ObjectCrud::ensureLanguageField PHP Метод

    protected function ensureLanguageField()
    {
        if ($this->getMultiLanguage() && !isset($this->_fields['lang'])) {
            $langField = new Field(null, $this->jarves);
            $langField->setId('lang');
            $langField->setType('text');
            $langField->setRequired(true);
            $this->_fields['lang'] = $langField;
        }
    }