Symfony\Component\Form\Extension\DataCollector\FormDataCollector::recursiveBuildFinalFormTree PHP Метод

    private function &recursiveBuildFinalFormTree(FormInterface $form = null, FormView $view, array &$outputByHash)
    {
        $viewHash = spl_object_hash($view);
        $formHash = null;

        if (null !== $form) {
            $formHash = spl_object_hash($form);
        } elseif (isset($this->formsByView[$viewHash])) {
            // The FormInterface instance of the CSRF token is never contained in
            // the FormInterface tree of the form, so we need to get the
            // corresponding FormInterface instance for its view in a different way
            $formHash = $this->formsByView[$viewHash];
        }
        if (null !== $formHash) {
            $output = &$outputByHash[$formHash];
        }

        $output = isset($this->dataByView[$viewHash])
            ? $this->dataByView[$viewHash]
            : array();

        if (null !== $formHash) {
            $output = array_replace(
                $output,
                isset($this->dataByForm[$formHash])
                    ? $this->dataByForm[$formHash]
                    : array()
            );
        }

        $output['children'] = array();

        foreach ($view->children as $name => $childView) {
            // The CSRF token, for example, is never added to the form tree.
            // It is only present in the view.
            $childForm = null !== $form && $form->has($name)
                ? $form->get($name)
                : null;

            $output['children'][$name] = &$this->recursiveBuildFinalFormTree($childForm, $childView, $outputByHash);
        }

        return $output;
    }