protected function beforeRender() { parent::beforeRender(); $key = ($this->isMethod('post') ? '_' : '') . Presenter::SIGNAL_KEY; if (!isset($this[$key])) { $do = $this->lookupPath(Presenter::class) . self::NAME_SEPARATOR . 'submit'; $this[$key] = (new Nette\Forms\Controls\HiddenField($do))->setOmitted()->setHtmlId(FALSE); } }